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Psych test 2
9/29 test
42
Psychology
Undergraduate 2
09/25/2015

Additional Psychology Flashcards

 


 

Cards

Term
Plasticity
Definition

1. adapting of sensory cortices to changes in sensory inputs that are in the cerebral cotrex

 

2. the ability to be molded 

 

3. phantom pains / limbs

Term
Nucleus
Definition

1. houses the chromosomes that contain your DNA, its inside the cell body

 

 

Term
Place code
Definition

1. the process by which different frequencies stimulate neural signals at specific places along the basilar membrane 

 

2. used mainly for high frequencies

Term
endorphines
Definition

1. a type of neurotransmitter, they are chemicals that act within the pain pathways and emotion centers of the brain

 

2. they help dull the experience of pain and elevate moods, runners high for example

Term
glial cells
Definition

1. what the myelin sheath is composed of

 

2. named for the greek word glue, theyre support cells found in the nervous system 

 

3. there are 10 to 50 times more neurons in your brain (100 billion neurons)

Term

retinal display

aka retina

Definition
1. light sensitive tissue lining the back of the eyeball, immediately behind the iris
Term
change blindness
Definition

1. occurs when people fail to detect changes to the visual details of a scene

 

2. in experiments where someone asks for directions and is replaced by someone else, 7/ 15 college students saw a difference

Term
nuerons
Definition
1. cells in the nervous system that communicate with one another to preform information-processing tasks
Term
internally valid experiments
Definition

1.an attribute of an experiment that allows it to establish casual relationships


???

Term

cat scan

aka CT scan

Definition

1. a type of neuroimaging technique, Computerized Axial Tompgraphy (CT) scan

 

2. in a CT scan, scanners rotate a device around a persons head and takes a series of xray photographs from different angles

 

3. they show different densities of tissue in the brain, higher density skulls look white on a CT scan, the cortex is gray, and lesser dense fissures and ventricles in the brain are dark

Term
accomidation
Definition

1. the process by which the eye maintains a clear image on the retina

 

2. this is when muscles change the shape of the lens to focus objects at different distances, making the lens flatter for objects that are far away or rounder for nearby objects

Term
normal vision
Definition
1. people with normal vision focus the image on the retina at the back of the eye, both for near and far objects
Term
raticular formation
Definition

1. regulates sleep, wakefulness, and levels of arousal

 

2. begins inside the medulla and extends upwards as a small cluster of neurons

Term
action potential
Definition

1. an electrical signal that is conducted along the length of a neuron's axon to a synapse

 

2. Biologists Alan Hodgkin and Andrew Huxley found how to produce a electrical impulse by stimulating the axon

Term
illussionary conjunction
Definition

1. a perceptual mistake where features from multiple objects are incorrectly combined

 

2. we correctly combine features into unified objects so automaticaly and effortlessly that it may be difficult to appreciate that binding is ever a problem

Term
proximity
Definition

1. objects that are close together tend to be grouped together 

 

2. a principle of perceptual organization

Term
tranduction
Definition

1. occurs when many sensors in the body convert physical signals from the environment into encoding neural signals sent to the central nervous system. 

 

2. sensory receptors communicate with the brain cells through this

Term
sensation and perception
Definition

Sensation:

1. a simple stimulation of a sense organ

2. the basic registration of light, sound, pressure, odor, or taste 

 

Perception:

1. after a sensation registers in your centeral nervous system, perception takes place in your brain: the organization, idetification, and interpretation of a sensation in order to form a mental representation.

Term
phineas gage
Definition

1. was a 25 year old railroad worker, on sep 13 1848 in Cavendish, Vermont he was packing an explosive charge into a crevice in a rock when the power exploded, driving a 3 foot 13 pound iron rod through his head at high speeds

 

2. phineas' tramatic accident allowed researchers to investigate the functions of the frontal lobe and its connections to the emotion center

Term
thermoreceptors
Definition

1. nerve fibers that sense cold and warmth, they respond when your skin temperature chnges

 

2. part of the touch system

Term
pituartary gland
Definition

1. the master gland of the bodys hormone-producing system, which releases hormones that direct the functions of many other glands in the body

 

2. located below the hypothalamus

Term
absolute threshold
Definition

1. the minimal intensity needed to just barely detect a stimulus in 50% of the trials 

 

2. the simplest quantity of measurement in psychpshycics

Term
types of taste receptor cells
Definition

1. the tase system contains 5 main types of tast receptors:

Salty

Sour 

Bitter

Sweet 

and Umani (savory)

Term

synesthetes

aka synesthesia

Definition
Perceptual experience of one sense that is evoked by another sense
Term
nuerontransmiters and mood disorders
Definition

1. chemicals that transmit information across the synapse to a recieveing neuron's dendrites

 

2. inside tiny vesicles or "bags" found insidee a terminal button

Term
blind spot
Definition
1. a location in the visual field that produces no sensation on the retina
Term
pain and the brain
Definition

1. pain is important to survival, pain indicates damage or potential damage to the body, without the ability to feel pain, we might ignore infections, broken bones, or serious burns 

 

2. neural signals for pain travel to 2 areas in the brain:

one pathway sends signals to the somatosensory cortex, identifying where the pain is occuring and what sort of pain it is (sharp, burn, dull)

and the other sends signals to the motivational and emotional centers of the brain, such as the hypothalamus and amygdala and the frontal lobe, this pain is unpleasent and motivates us to escape from or relieve the pain

Term
synapse
Definition

1. the junction or reigon between the axon of one neuron and the dendrites of cell body of another

 

2. the small gap between the axon of one neuron and the dendrites or cell body of another

Term

the brain relay station

aka thalamus

Definition
1. relays and filters information from the sense and transmits the information to the cerebral cortex
Term

pet scan 

aka Positron Emission Tomography

Definition
1. used to study the brains response to 2 odors, one related to testosterone, which is produced in mens sweat, and the other is related to estrogen, which is found in womens urine
Term
timbre
Definition

1. a listeners experience of sound quality or resonance 

 

2. differences in the complexity of sound waves or their mix of frequences correspond to this

Term
dendrites and axons
Definition

1. Dendrites recieve information from other neurons and relay it to the cell body

the word dendrites from the greek word "tree"

 

2. the axon carries infomation to other neurons, muscles, or glands

Term
tase buds
Definition

1. the organ of taste transduction

 

2. mouth contains 5k to 10k taste buds distributed all over the tounge, roof of mouth, and upper throat

 

3. each taste bud contains 50 to 100 taste receptor cells

Term
types of nuerons
Definition

1. there are 3 major types:

Sensory neuron - recieves information from the external world and conveys this information to the brain via spinal cord

motor neurons - carry signals from the spinal cord to the muscles to produce movement

interneurons - connect sensory neurons, motor neurons, or interneurons 

Term
olfaction
Definition

1. olfactory receptor neurons (ORNs) - receptor cells that initiate the sense of smell

 

 

Term
agnoists
Definition

1. drugs that increase the action of a neuron rotransmitter 

 

2. Antagonists - drugs that block the function of a neurontransmitter

Term
fight or flight
Definition

1. Sympathic nervous system - a set of nerves that perpares the body for action in challenging or threatening situation (fight)

 

2. parasympathetic nervous system - helps the body return to a normal resting state (flight)

Term
photo receptor cells
Definition

1. 2 types of photoreceptor cells: 

cones - detect color, operate under normal daylight conditions and allow us to focus on fine detail

 

rods - become active under low-light conditions for night vision

Term
parkinsons disease
Definition

1. a movement disorder characterized by trmors and difficulty initiating movement and caused by the loss of neurons that use the neurotransmitter dopamine

 

2. L-dopa was invented to battle this disease

Term
human chromosomes
Definition
1. strands of DNA wound around each other in a double helix configuration, they come in pairs and humans have 23 pairs each, you inherit one of each pair from your mom and dad
Term
nodes of ranvier
Definition

1. break points on the axon that the myelin sheath dont coveer

 

2. after french pathologist Louis Antoine Ranvier who discovered them

Term
four lobes of the brain
Definition

4 lobes:

Frontal Lobe - conscious

Parietal Lobe - touch and taste

Occipital Lobe - vision stuff tbh

Temporal Lobe - memories

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