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28 Cards in this Set

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  • Back
Hypothesis vs. Theory
Theories are general and a hypothesis is a specific statement.
Neurons
basic element of the NS. ability to communicate with other cells
Neurotransmitters
chemicals that carry a message across the synapse to the dendrite of a reciever neutron.
Dopamine
a neurotransmitter involved in movement, attention, and learning. low dopamine=parkinsons and High dopamine= schizophrenia
serotonin
a neurotransmitter (depression)
Scientific method
question, formulate explanation, carry out research
Wilhelm Wundt
established first labratory of physchology. Developed Structuralism, introspection.
amplitude
wave patterns that allow us to distinguish between loud and soft sounds. spread between up and down peaks.
Frequency
number of wave cycles that occur in a second.Low freq(low pitch sound)
Perception
sorting out, interpretation, anaylsis, and integration of stimuli involving senses and brain.
Sensation
activation of the sense organs by a source of physical energy.
Adaption
An adjustment in sensory capacity after prolonged exposure to unchanging stimuli.
Retina
converts the electromagnetic energy of light into useful information for the brain
Rods
thin, cylindrical receptors cells in the retina that are sensitive to light.
cones
responsible for sharp focus and color perception
Sequence of eye
cornea, pupil, lens, retina
Trichromatic theory of color vision
there are 3 kinds of cones in the retina, each of which responds primarily to a specific range of wavelengths.
Opponent process theory of color vision
The theory that receptor cells for color are linked in pairs, working in opposition to each other.
Hormones
chemicals that circulate through the blood and affect the funcioning or growth of other parts of the body.
Sympathetic division
acts to prepare the body in stressful situations, "fight or flight"
Parasympathetic division
acts to calm the body after the emergency situation has been resolved.
EEG
records electrical activity in the brain through electrodes placed on the outside of the skull
CT scan
uses a computer to construct an image of the structures of the brain by combining xrays
MRI
aiming a powerful magnetic field to the brain
PET scan
injection of radioactive liquid into the bloodstream
Cerebral cortex
"new brain" responsible for most sophisticated information processing in the brain.
Broco's Aphasia
problems with language, speech becomes halting, and ungrammical
Wernicke's Aphasia
produces difficulty in understanding other's speech and in the production of language.