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Neuroscience and Behavior
pgs.47-57
13
Psychology
Undergraduate 1
02/19/2007

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Term
phrenology
Definition
theory:bumps on the skull reveal our mental abilities and character traits.

various brain regions have particular brain functions.

Term
biological psychologists
Definition
study the connection between biological activity and psychological events.
Term
neurons
Definition
nerve cells
Term
dendrites
Definition
receive information
Term
axons
Definition
send information
Term
myelin sheath
Definition
a fatty tissue that insulates the axons and helps speed the impulses.
Term
lack of myelin sheath
Definition
multiple sclerosis-slowing of communication to muscles and eventual loss of muscle control.
Term
action potential
Definition
brief electrical charge that travels down the axon.
Term
ions
Definition
electrically charged atoms
Term
resting potential
Definition
occurs because an unmyelinated axon's membrane is selectively permeable
Term
depolarize
Definition
to demagnetize
Term
refractory period
Definition
the resting period
Term
threshold
Definition
the minimum intensity.
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