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biopsychology
Biopsychology evolution, senses
50
Psychology
Undergraduate 4
09/30/2011

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Term
Cortex
Definition
outer most layer of brain
Term
adaptations
Definition
a trait that increases the probability that an individual will leave offspring in subsequent generations
Term
mutation
Definition
a change inthe nucleotide sequence of a gene as a result of unfaithful replication
Term
Encephalization factor
Definition
size of brain in relation to body weight
Term
Neocortex
Definition
cerebral cortex made up of six distinct layers
Term
neurogenesis
Definition
mitotic division of non neuronal cells to produce neurons
Term
cell migration
Definition
movements of nerve cells to establish nerve cell populations
Term
differentiation
Definition
cells into distinctive types of neurons
Term
synaptogenesis
Definition
creation of nerve connections as axons and dendrites grow
Term
cell death
Definition
selective death of nerve cells
Term
synaptic rearrangement
Definition
loss and development of synapses to refine conections
Term
forebrain
Definition
telencephalon- thalamus and hypothalamus
Term
midbrain
Definition
mesencephalon
Term
hindbrain
Definition
metencephelon- cerebellum, pons, medulla
Term
apoptosis
Definition
cell death
Term
nerve growth factor
Definition
a substance that affects the growth of neurons in spinal ganglia
Term
what guides brain development
Definition
genes, neurotropic factors
Term
teratogen
Definition
external substance that effects brain development
Term
stimulus
Definition
physical event that triggers a sensory response
Term
types of senses
Definition
touch and pain, vestibular, auditory, visual, taste, olfaction
Term
types of skin
Definition
hairy, glabrous, mucocutaneous
Term
glabrous
Definition
feet, palms
Term
mucocutaneous
Definition
mouth, nose
Term
Skin Layers
Definition
Dermis-living, epidermis-dead outerlayer
Term
mechanoreceptors
Definition
respond to pressure on skin surface. Slow adapting-tonic- action potential drops slowly. Fast adapting- phasic- action potential drops rapidly
Term
thermoreceptors
Definition
respond to changes in temperature
Term
noiciceptors
Definition
respond to pain
Term
How does sensory info get to brain?
Definition
face sensory info goes to brain directly, other info goes through spinal cord to brain
Term
Leminscal Pathway
Definition
light touch, travels up same side of body
Term
Spinothalamic Pathway
Definition
temperature, pain, deep pressure. travels laterally through body
Term
Dermatome
Definition
a strip of skin innervated by a particular spinal root
Term
Dermatome numbers
Definition
cervical-8, Thoracic- 12, Lumbar-5, Sacral-5. coccygeal.
Term
path of sensory infomation into brain
Definition
brainstem- thalamus-primary somatosensory cortex
Term
Homunculous
Definition
a body map for the layout of the skin and some internal regions along the somatosensory cortex.
Term
somatosensory
Definition
body sensation, touch and pain.
Term
Cingulate cortex
Definition
area that is stimulated when pain is present
Term
Pain: Forms of treatment
Definition
psychogenic- placebo, hypnosis. Pharmacological-opiates, cannabinoids. Stimulation- acupuncture. Surgical-root severing
Term
Process of Sound
Definition
Cochlea receptor cells convert vibrations into waves of fluid, hair cells move fluid to basilar membrane which convert fluid into electrical signals
Term
Two streams of auditory processing (where, what)
Definition
Dorsal- parietal lobe, involves where sound comes from. Ventral- temporal lobe, what sound is.
Term
heschl's gyrus
Definition
music
Term
angular gyrus
Definition
nouns
Term
Conduction deafness
Definition
disorder of outer/middle ear-prevent vibrations from travelling- cochlear implants help
Term
Sensorineural
Definition
auditory nerve fibers dont activate- hearing aids help
Term
Central Deafness
Definition
caused by brain lesions
Term
Sensory conflict theory
Definition
contradicting sensory messages between vesibular and visual information-vertigo
Term
five human tastes
Definition
salty, sweet, sour, bitter, umami
Term
papilla
Definition
taste receptor cells on tongue
Term
gustatory system
Definition
taste system
Term
Olfactory epithelium
Definition
receptors that lines the nasal cavity
Term
Olfactory bulb
Definition
anterior of brain, processes smells
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