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Psychology 101 - Grant
Vocabulary, etc.
216
Psychology
Undergraduate 1
01/19/2009

Additional Psychology Flashcards

 


 

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Term
What are the goals of Psychology?
Definition
1. Describe 2. Understand 3. Predict 4. Influence 5. Apply
Term
The Levels of Analysis
Definition
Biological, Psychological, Environmental
Term
Biological Level of Analysis
Definition
brain processes and genetic influences
Term
Psychological Level of Analysis
Definition
our thoughts, feelings, and motives
Term
Environmental Level of Analysis
Definition
past and current physical and social environments to which we are exposed
Term
Example of Biological, Psychological, and Environmental Levels of Analysis - Eating
Definition
Biological - various chemicals, neural circuits, and structures in the brain respond to bodily signals and help regulate whether hungry or full

Psychological - moods, food preferences, and motives affect eating (e.g. stress)

Environmental: specific stimuli (food appearances and smells) may trigger eating
Term
Mind-body interactions
Definition
interplay between the psychological and biological levels of analysis.

Nature and nurture interact.
Term
Mind-body dualism
Definition
early philosophers believed that the mind is a spiritual entity.
It implies that no amount of research on the physical body could ever hope to unravel the mysteries of the nonphysical mind
Term
Monism
Definition
holds that the mind and body are one; the mind is not a spiritual entity
It implied that the mind could be studied by measuring physical processes within the brain
Term
British empiricism
Definition
held that all ideas and knowledge are gained empirically, through the senses
Observation is more valid than reason (reason has potential for error)
Term
Who established the first experimental psychology laboratory?
Definition
1879 Wilhelm Wundt (believed the mind could be broken down into its basic components)
Term
Structuralism
Definition
the analysis of the mind in terms of its basic elements.

It uses the method of introspection to study sensations.
Term
Functionalism
Definition
held that psychology should study the functions of consciousness rather than its structure
Term
Psychodynamic perspective
Definition
searches for the causes of behavior within the inner workings of our personality, emphasizing the role of unconscious processes
Term
Free Association
Definition
expressing any thoughts that come to mind
Term
Psychoanalysis
Definition
a form of psychotherapy; the analysis of internal and primarily unconscious psychological forces

*people have powerful inborn sexual and aggressive drives
Term
Defensive mechanisms
Definition
Developed to cope with the powerful inborn sexual and aggressive drives (e.g. repression)
Term
Psychodynamic
Definition
The ongoing struggle between our inborn sexual and aggressive drives with the defense mechanisms that help us cope with these drives are dynamic in nature, therefore termed "psychodynamic"
Term
Object relations theories
Definition
Focus on how early experiences with caregivers shape the views that people form of themselves and others
Term
Behavioral perspective
Definition
Focuses on the role of the external environment in governing our actions
Term
Behaviorism
Definition
school of thought that emphasizes environmental control of behavior through learning

"A person does not act upon the world, the world acts upon him" - Skinner
Term
Cognitive behaviorism
Definition
proposes that learning experiences and the environment influence our expectations and other thoughts, and in turn our thoughts influence how we behave
Term
Humanistic perspective (Humanism)
Definition
emphasizes free will, personal growth, and the attempt to find meaning in one's existence

*each of us has an inborn force toward self-actualization
Term
Self-actualization
Definition
an inborn force toward reaching one's individual potential
Term
Positive Psychology movement
Definition
emphasizes the study of human strengths, fulfillment, and optimal living
Term
Cognitive Perspective
Definition
Examines the nature of the mind and how mental processes influence behavior

*actions are governed by thought
Term
Gestalt perspective
Definition
the whole is greater than the sum of its parts
Term
Cognitive Psychology
Definition
focuses on the study of mental processes, embodies the cognitive perspective
Term
Cognitive neuroscience
Definition
uses sophisticated electrical recording and brain-imaging techniques to examine brain activity while people engage in cognitive tasks

Such scientists seek to determine how the brain goes about its business of learning language, acquiring knowledge, forming memories, and performing other cognitive activities
Term
Social Constructivism
Definition
a cognitive viewpoint that maintains that what we consider "reality" is largely our own mental creation
Term
Sociocultural perspective
Definition
examines how the social environment and cultural learning influence our behavior, thoughts, and feelings
Term
Culture
Definition
the enduring values, beliefs, behaviors, and traditions that are shared by a large group of people and passed from one generation to the next
Term
Social norms
Definition
rules (often unwritten) that specify what behavior is acceptable and expected for members of a group
Term
Socialization
Definition
the process by which a culture is transmitted to new members and internalized by them
Term
Cultural psychology
Definition
explores how culture is transmitted to its members and examines psychological similarities and differences among people from diverse cultures
Term
individualism
Definition
an emphasis on personal goals and self-identity based primarily on one's own attributes and achievements
Term
Collectivism
Definition
individual goals are subordinated to those of the group and personal identity is defined largely by the ties that bind one to the extended family and other social groups
Term
The biological perspective
Definition
examines how brain processes and other bodily functions regulate behavior
Term
Behavioral neuroscience
Definition
examines brain processes and other physiological functions that underlie our behavior, sensory experiences, emotions, and thoughts
Term
neurotransmitters
Definition
chemicals released by nerve cells that allow them to communicate with one another
Term
Which is broader - behavioral neuroscience or cognitive neuroscience?
Definition
behavioral neuroscience

Behavioral neuroscientists also study the biology of hunger, thirst, sex, body-temperature regulation, emotion, movement, and sensory processes such as vision, hearing, and taste
Term
Behavior genetics
Definition
the study of how behavioral tendencies are influenced by genetic factors
Term
Natural selection
Definition
if an inherited trait gives certain members an advantage over others, these members will be more likely to survive and pass these characteristics on to their offspring
Term
Evolutionary pychology
Definition
a growing discipline that seeks to explain how evolution shaped modern human behavior
Term
what are the steps of the scientific method?
Definition
1. identify question of interest
2. hypothesize
3. test hypothesis
4. analyze data
5. build knowlege
Term
theory
Definition
a set of formal statements that explains how and why certain events are related to one another
Term
What characteristics does a good theory have?
Definition
*It incorporates existing knowledge within a broad framework; that is, it organizes information in a meaningful way
*It is testable; it generates new hypotheses whose accuracy can be evaluated by gathering new evidence
*the predictions made by the theory are supported by the findings of new research
*it conforms to the LAW OF PARSIMONY - if two theories can explain and predict the same phenomenon equally well, the simpler theory is the preferred one
Term
variable
Definition
Any characteristic or factor that can vary
Term
What characteristics does a good theory have?
Definition
*It incorporates existing knowledge within a broad framework; that is, it organizes information in a meaningful way
*It is testable; it generates new hypotheses whose accuracy can be evaluated by gathering new evidence
*the predictions made by the theory are supported by the findings of new research
*it conforms to the LAW OF PARSIMONY - if two theories can explain and predict the same phenomenon equally well, the simpler theory is the preferred one
Term
Operational Definition
Definition
Defines a variable in terms of the specific procedures used to produce or measure it
Term
Self-report measures
Definition
Ask people to report on their own knowledge, feelings, attitudes, experiences, or behavior
Term
Social desirability Bias
Definition
the tendency to respond in a socially acceptable manner rather than according to how one truly feels or behaves
Term
unobtrusive measures
Definition
record behavior in a way that keeps participants unaware that they are being observed
Term
archival measures
Definition
records or documents that already exist
Term
What is the APA?
Definition
the American Psychological Association
Term
Which 5 broad ethical principles does that APA code set?
Definition
1. Beneficence: seeking to benefit other people
2. Responsibility: performing professional duties with utmost care
3. Integrity: being honest and accurate
4. Justice: enhancing all people's access to the benefits of psychological knowledge
5. Respect: respecting people's dignity and rights to confidentiality and self-determination
Term
Informed Consent
Definition
before people agree to participate in research, they should be informed about:
*the study's purpose and procedures
*the study's potential benefits
*potential risks to participants
*the right to decline participation and withdraw at any time without penalty
*whether responses will be confidential and, if not, how privacy will be safeguarded
Term
Deception
Definition
occurs when participants in a study are misled about the nature of the study; deception is controversial
Term
Descriptive Research
Definition
Seeks to identify how humans and other animals behave, particularly in natural settings
Term
Case Study
Definition
an in-depth analysis of an individual, group, or event
Term
Naturalistic Observation
Definition
the researcher observes behavior as it occurs in a natural setting, and attempts to avoid influencing that behavior
Term
Habituation
Definition
When disguise is not feasible, people and other animals typically adapt to and ignore the presence of an observer as time passes
Term
Survey Research
Definition
information about a topic is obtained by administering questionnaires or interviews to many people
Term
What are two key concepts in survey research?
Definition
Population and sample
Term
Population (Survey research)
Definition
consists of all the individuals who we are interested in drawing a conclusion about
Term
Sample (survey research)
Definition
a subset of individuals drawn from the larger population
Term
Representative Sample
Definition
one that reflects the important characteristics of a population
Term
Random Sampling
Definition
to obtain a representative sample, researchers typically use a procedure called random sampling, in which every member of the population has an equal probability of being chosen to participate in the survey
Term
Correlational Research
Definition
1. the researcher measures one variable (X) such as people's birth order
2. the researcher measures a second variable (Y), such as a personality trait
3. the researcher statistically determines whether X and Y are related
Term
Does correlational research measure or manipulate variables?
Definition
Measures, never manipulates
Term
Bidirectionality problem
Definition
two-way causality; variable X (social relationships) has caused variable Y (happiness), that Y caused X, or that both variables influenced each other
Term
Spurious
Definition
The association between social relationships and happiness may be artificial, or what scientists call "spurious"..it may be that neither X causes Y nor Y causes X and that in reality it is variable Z that causes something
Term
third-variable problem
Definition
variable Z is responsible for what loks like a relation between X and Y
Term
Can we draw causal conclusions from correlational data?
Definition
no because it may look like there is a direct relationship between X and Y, but in reality it is variable Z that causes X and/or Y to change.
Term
Correlation Coefficient
Definition
a statistic that indicates the direction and strength of the relation between two variables (variables can be correlated either positively or negatively)
Term
Positive correlation
Definition
higher scores on one variable are associated with higher scores on another variable
Term
Negative Correlation
Definition
higher scores on one variable are associated with lower scores on another variable
Term
What values do correlation coefficients range from?
Definition
+1.00(perfect positive correlation) to -1.00 (perfect negative correlation)
Term
3 essential characteristics of an experiment
Definition
1. the researcher manipulates (i.e. controls) one or more variables
2. the researcher measures whether this manipulation influences other variables
3. the researcher attempts to control extreneous factors that might influence the outcome of the experiment
Term
Independent variable
Definition
the factor that is manipulated or controlled by the experimenter
Term
Dependent variable
Definition
the factor that is measured by the experimenter and that may be influenced by the independent variable
Term
Experimental Group
Definition
The group that receives a treatment or an active level of the independent variable
Term
Control Group
Definition
Is not exposed to the treatment or receives a zero-level of the independent variable
Term
Counterbalancing
Definition
a procedure in which the order of conditions is varied so that no condition has an overall advantage relative to the others
Term
Internal validity
Definition
Represents the degree to which an experiment supports clear causal conclusions
Term
Confounding of variables
Definition
means that two variables are intertwined in such a way that we cannot determine which one has influenced a dependent variable
Term
Placebo
Definition
refers to a substance that has no pharmacological effect
Term
Placebo effect
Definition
people receiving a treatment show a change in behavior because of their expectations, not because the treatment itself had any specific benefit
Term
Experimenter expectancy effects
Definition
refers to the subtle and unintentional ways researchers influence their participants to respond in a manner consistent with the researcher's hypothesis
Term
Double-blind procedure
Definition
both participant and experimenter in a procedure are kept blind as to which experimental condition the participant is in
Term
External validity
Definition
the degree to which the results of a study can be generalized to other populations, settings, and conditions
Term
Replication
Definition
the process of repeating a study to determine whether the original findings can be duplicated
Term
Descriptive statistics
Definition
allow us to summarize and describe the characteristics of a set (or distribution) of data
Term
mode
Definition
The most frequently occurring score in a distribution
Term
Median
Definition
the point that divides a distribution of scores in half when those scores are arranged in order from lowest to highest
Term
Mean
Definition
the arithmetic average of a set of scores
Term
measures of variability
Definition
capture the degree of variation, or spread, in a distribution of scores
Term
Range
Definition
the difference between the highest and lowest scores in a distribution
Term
Standard deviation
Definition
takes into account how much each score in a distribution differs from the mean
Term
Inferential Statistics
Definition
tell us how confident we can be in making inferences about a population based on findings obtained from a sample
Term
Statistical significance
Definition
means that it is very unlikely that a particular finding occurred by chance alone
Term
Meta-analysis
Definition
a statistical procedure for combining the results of different studies that examine the same topic
Term
Pseudoscientific misinformation
Definition
bunk and psychobabble that is made to sound scientific
Term
Genotype
Definition
the specific genetic makeup of the individual
Term
Phenotype
Definition
the individual's observable characteristics
Term
Chromosome
Definition
a double-stranded and tightly coiled molecule of deoxyribonucleic acid
Term
genes
Definition
the DNA portion of the chromosome carries the biological units of heredity (traits)
Term
Alleles
Definition
alternative forms of a gene that produce different characteristics
Term
Dominant
Definition
the particular characteristic that it controls will be displayed
Term
Recessive
Definition
the characteristic will not show up unless the partner gene inherited from the other parent is also recessive
Term
Polygenic transmission
Definition
a number of gene pairs combine their influences to create a single phenotypic trait
Term
Behavior genetics
Definition
study how heredity and environmental factors influence psychological characteristics
Term
Family studies
Definition
researchers study relatives to determine if genetic similarity is related to similarity on a particular trait
Term
Adoption study
Definition
people who were adopted early in life are compared on some characteristic with both their biological parents, with whom they share their genetic endowment, and with their adoptive parents, with whom they share no genes
Term
Twin studies
Definition
compare trait similarities in identical and fraternal twins
Term
monozygotic twins
Definition
identical twins; develop from one egg
Term
Dizygotic
Definition
Fraternal twins; come from two fertilized eggs
Term
Concordance rates
Definition
aka trait similarity; the likelihood that two people share the same characteristic
Term
Heritability statistic
Definition
estimates the extent to which the differences, or variation, in a specific phenotypic characteristic within a group of people can be attributed to their differing genes
Term
Species adaptation
Definition
a response to changing environment
Term
Individual adaptation
Definition
a reaction to the circumstances of our lives
Term
Adaptive significance
Definition
how a behavior influences an organism's chances of survival and reproduction in its natural environment
Term
Fixed action pattern
Definition
an instinctive behavior; an unlearned response automatically triggered by a particular stimulus
e.g. herring gull red dot pecking
Term
In which two ways does the environment shape our behavior?
Definition
1. Species adaptation
2. Personal adaptation
Term
Shared environment
Definition
People who reside in a shared environment experience many of their features in common
Term
Unshared environment
Definition
experiences that are unique to us
Term
What are the "Big Five" that account for the individual differences in personality?
Definition
1. Extraversion-Introversion (sociable, outgoing, adventuresome, spontaneous vs quite, aloof, inhibited, solitary)
2. Agreeableness (cooperation, helpful, good-natured vs. antagonistic, uncooperative, suspicious)
3. Conscientiousness (responsible, goal-directed, dependable vs. undependable, careless, irresponsible)
4. Neuroticism (worrying, anxious, emotionally unstable vs. well-adjusted, secure, calm)
5. Openness to Experience (imaginative, artistically sensitive, refined vs. unreflective, crude and boorish, lacking in intellectual curiosity
Term
Reaction range
Definition
provides one useful framework for understanding gene-environmental interactions;
the reaction range for a genetically influenced trait is the range of possibilities - the upper and lower limits - that the genetic code allows
Term
Evocative influence
Definition
a child's genetically influenced behaviors may evoke certain responses from others
Term
Knockout Procedure
Definition
altering a specific gene in a way that prevents it from carrying out its normal function because that particular function of the gene is knocked out, or eliminated
Term
Knock-in procedure
Definition
inserting a new gene into an animal during the embryonic stage and studying its impact on behavior
Term
innate biologically based mechanisms
Definition
enable us to take in, process, and respond to information, predisposing us to behave, to feel, and even think in certain ways; inborn capacities
Term
Evolution
Definition
a change over time in the frequency with which particular genes - and the characteristics they produce - occur within an interbreeding population
Term
mutations
Definition
genetic variations that arise in a population; random events and accidents in gene reproduction during the divisions of cells
Term
Natural Selection
Definition
characteristics that increase the likelihood of survival and reproduction within a particular environment will be more likely to be preserved in the population and therefore will become more common in the species over time
Term
Evolutionary noise
Definition
Neutral variations that neither facilitate nor impede fitness to be preserved in a population
Term
Adaptations
Definition
physical or behavioral changes taht allow organisms to meet recurring environmental challenges to their survival, thereby increasing their reproductive ability
Term
Evoked Culture
Definition
Cultures may themselves be the product of biological mechanisms that evolved to meet specific adaptation challenges faced by specific groups of people in specific places at specific times
Term
Human Nature
Definition
the expression of inborn biological tendencies that have evolved through natural selection
Term
Sexual Strategies Theory
Definition
mating strategies and preferences reflect inherited tendencies, shaped over the ages in response to different types of adaptive problems that men and women faced

aka "parental investment theory"
Term
Social Structure Theory
Definition
maintain that men and women display different mating preferences not because nature impels them to do so, but because society guides them into different social roles
Term
Evolutionary personality theory
Definition
looks for the origin of presumably universal personality traits in the adaptive demands of our species' evolutionary history
Term
Strategic Pluralism
Definition
The idea that multiple - even contradictory - behavioral strategies( for example introversion and extraversion) might be adaptive in certain environments and would therefore be maintained through natural selection
Term
neurons
Definition
the basic building blocks of the nervous system
Term
three parts of a neuron
Definition
cell body, dendrites, and an axon
Term
The cell body of the neuron
Definition
aka "soma"; contains the biochemical structures needed to keep the neuron alive, and its nucleus carries the genetic info that determines how the cell develops and functions
Term
Dentrites
Definition
specialized receiving units like antennae that collect messages from neighboring neurons and send them on to the cell body
Term
Axon
Definition
conducts electrical impulses away from the cell body to other neurons, muscles, or glands
Term
Glial cells
Definition
support neurons by surrounding neurons and holding them in place; manufacture nutrient chemicals that neurons need; absorb toxins and waste materials that would damage or kill neurons
Term
What two things do neurons do?
Definition
1. Generate electricity that creates nerve impulses
2. release chemicals that allow them to communicate with other neurons and with muscles and glands
Term
Ions
Definition
electrically charged atoms
Term
Anions
Definition
large negatively charged protein molecules (A-)
Term
Potassium Ions
Definition
(K+) found inside the neuron, along with anions
Term
Resting potential
Definition
The internal difference of around 70 millivolts (mV); the high concentration of sodium ions in the fluid outside the cell, together with the negatively charged protein ions inside, results in an uneven distribution of positive and negative ions that makes the interior of the cell negative compared to the outside

At rest, the neuron is in a state of polarization
Term
Action potential
Definition
the electrical shift caused by stimulating the neuron's axon that shifts the interior voltage from -70 millivolts to +40 millivolts and lasts for about 1/1000 of a second

aka nerve impulse
Term
Depolarization
Definition
when positively charged sodium ions flood into the axon by being attracted by the negative protein ions inside, a state of depolarization is created
Term
Absolute refractory period
Definition
the membrane is not excitable and cannot discharge another impulse
Term
All-or-none law
Definition
action potentials occur at a uniform and maximum intensity, or they do not occur at all
Term
Graded potentials
Definition
Changes in the negative resting potential that do not reach the +50 millivolt action potential threshold are called this
Term
Myelin Sheath
Definition
a whitish, fatty insulation layer derived from glial cells during development
Term
Unmyelinated axons...
Definition
are gray in color; aka gray matter
Term
nodes of Ranvier
Definition
places where the myelin is either extremely thin or absent
Term
What effects can damage to the myelin coating have?
Definition
tragic ones - increasingly jerky or uncoordinated movements, and in the final stages paralysis
Term
Synaptic Space
Definition
a tiny gap between the axon terminal and the next neuron meaning neurons do not physically ouch each other (questions how communication between neurons occurs)
Term
Neurotransmitters
Definition
chemical substances that carry messages across the synaptic space to other neurons, muscles, or glands
Term
The 5 steps of chemical communication between neurons
Definition
1. synthesis: the transmitter molecules are formed inside the neuron
2. storage: the molecules are then stored in synaptic vesicles
3. release: the molecules are released into the fluid-filled space between the axon of the presynaptic neuron and the membrane of the postsynaptic neuron
4. binding: the molecules cross the synaptic space and bind themselves to receptor sites
5. deactivation: once a neurotransmitter molecule binds itself to its receptor, it continues to excite or inhibit the neuron until it is deactivated, or shut off
Term
Synaptic Vesicles
Definition
chambers within the axon terminals where transmitter molecules are stored after being synthesized and before being released into the fluid-filled space between the axon of the presynaptic
Term
Presynaptic
Definition
the sending neuron
Term
Postsynaptic neuron
Definition
the receiving neuron
Term
receptor sites
Definition
large protein molecules embedded in the receiving neuron's cell membrane
Term
Excitatory transmitter
Definition
when this transmitter is at work, the chemical reaction causes the postsynaptic neuron's sodium channels to open. As sodium ions flood into the cell and depolarize it, they create either a graded potential or an action potential as just described
Term
inhibitory neurotransmitter
Definition
does the opposite of an excitatory transmitter - it may cause positive potassium ions to flow out of the neuron or negative chloride ions from the exterior to flow into it through chloride channels in the membrane, increasing the neuron's negative potential and making it harder to fire the neuron
Term
Reuptake
Definition
a deactivation mechanism in which the transmitter molecules are taken back into the presynaptic axon terminals
Term
Acetylcholine (ACh)
Definition
a neurotransmitter involved in muscle activity and memory

underproduction: Alzheimer's
absence: paralysis
oversupply: violent muscle contractions and convulsions
Term
Botulinum
Definition
these bacteria block the release of ACh from the axon terminal, resulting in a potentially fatal paralysis of the muscles, including those of the respiratory system
Term
neuromodulators
Definition
neurotransmitters that have a more widespread and generalized influence on synaptic transmission

They circulate through the brain and either increase or decrease (modulate) the sensitivity of thousands, perhaps millions, of neurons to their specific transmitters
Term
Endorphins
Definition
one of the best known neuromodulators

travel through the brain's circulatory system and inhibit pain transmission while enhancing neural activity that produces pleasurable feelings
Term
Psychoactive drugs
Definition
chemicals that produce alterations in consciousness, emotion, and behavior
Term
Agonist
Definition
a drug that increases the activity of a neurotransmitter
it can...
1. enhance a neuron's ability to synthesize, store, or release neurotransmitters
2. mimic the action of a neurotransmitter by binding with and stimulating postsynaptic receptor sites
3. bind with and stimulate postsynaptic receptor sites
4. make it more difficult for neurotransmitters to be deactivated, such as by inhibiting reuptake
Term
Antagonist
Definition
a drug that inhibits or decreases the action of a neurotransmitter.

it can...
1. reduce a neuron's ability to sunthesize, store, or release neurotransmitters
2. prevent a neurotransmitter from binding with the postsynaptic neuron by fitting into and blocking the receptor sites on the postsynaptic neuron
Term
Alochol...agonist or antagonist?
Definition
both. As an agonist it stimulates the activity of the inhibitory transmitter GABA, thereby depressing neural activity

As an antagonist, it decreases the activity of glutamate, an excitatory transmitter.
Term
sensory neurons
Definition
carry input messages form the sense organs to the spinal cord and brain
Term
Motor neurons
Definition
transmit output impulses from the brain and spinal cord to the body's muscles and organs
Term
interneurons
Definition
link the input and output functions

perform connective or associative functions within the nervous system.

they outnumber the sensory and motor neurons by a lot.
Term
peripheral nervous system
Definition
contains all the neral structures that lie outsside of the brain and spinal cord
Term
Somatic nervous system
Definition
consists of sensory neurons that are specialized to transmit messages from the eyes, ears, and other sensory receptors, and motor neurons that send messages from the brain and spinal cord to the muscles that control voluntary movements
Term
Tracts
Definition
inside the brain and spinal cord, nerves are called tracts
Term
Autonomic nervous system
Definition
senses the body's internal functions and controls the glands and the smooth (involuntary) muscles that form the heart, the blood vessels, and the lining of the stomach and intestines

consists of two subdivisions - sympathetic nervous system and the parasympathetic nervous system
Term
sympathetic nervous system
Definition
has an activation or arousal function and it tends to act as a total unit
Term
Parasympathetic nervous system
Definition
In general, it slows down body processes and maintains a state of tranquility
Term
homeostasis
Definition
a delicately balances or constant internal state
Term
Central nervous system
Definition
contains the brain and the spinal cord, which connects most parts of the peripheral nervous system with the brain
Term
Neuropsychological tests
Definition
measure verbal and nonverbal behaviors of people who may have suffered brain damage through accident or disease
Term
electroencephalograph
Definition
measures the activity of large groups of neurons through a series of large electrodes places on the scalp
Term
Computerized Axial tomography (CT or CAT) scans
Definition
use X-ray technology to study brain structures
Term
Magnetic resonance imaging (MRI)
Definition
creates images bsed on how atoms in living tissue respond to a magnetic pulse deliivered by the device
Term
Positron-emission tomography (PET) scans
Definition
measure brain activity, including metabolism, blood flow, and neurotransmitter activity
Term
functional MRI (fMRI)
Definition
can produce pictures of blood flow in the brain taken less than a second apart
Term
hindbrain
Definition
the lowest and most primitive level of the brain
Term
Cerebellum
Definition
a portion of the hindbrain attached to the brain stem that coordinated fine muscle movement and balance; plays a role in learning and memory
Term
Brain stem
Definition
supports vital life functions. it includes the medulla and the pons
Term
medulla
Definition
plays an important role in vital body functions such as heart rate and respiration
Term
The pons
Definition
lies just above the medulla and carries nerve impulses between higher and lower levels of the nervous system
Term
the midbrain
Definition
contains clusters of sensory and motor neurons
Term
reticular formation
Definition
acts as a kind of sentry, both alerting higher centers of the brain that messages are coming and then either blocking those messages or allowing them to go forward
Term
Forebrain
Definition
the brain's most advanced portion from an evolutionary standpoint
Term
cerebrum
Definition
consists of two large hemispheres, a left and a right side, that wrap around the brain stem as the two halves of a cut grapefruit might wrap around a spoon
Term
Cortex
Definition
thin covering of the forebrain
Term
thalamus
Definition
located above the midbrain and has sometimes been likened to a switchboard that organizes inputs from sensory organs and routes them to the appropriate areas of the brain
Term
the hypothalamus
Definition
"under the thalamus" consists of tiny groups of neuron cell bodies that lie at the base of the brain, above the roof of the mouth; plays a role in many aspects of motivation and emotion, including sexual behavior, temperature regulation, sleeping, eating, drinking, and aggression
Term
endocrine system
Definition
the body's collection of hormone=producing gands
Term
pituitary gland
Definition
the master gland that exerts control over the other glands of the endocrine system
Term
limbic system
Definition
helps coordinate behaviors needed to satisfy motivational and emotional urges that arise in the hypothalamus; it is involved in memory
Term
Hippocampus
Definition
involved in forming and retrieving memories
Term
amygdala
Definition
organizes motivational and emotional response patterns, particularly those linked to aggression and fear
Term
Cerebral Cortex
Definition
a 1/4 inch thick sheet of gray (unmyelinated) cells that form the outermost layer of the human brain
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