chap 2 Flashcards
(40 cards)
gamma- aminobutyric acid
substance that reduces activity across the synapse, inhibiting a range of behaviors and emotions
serotonin
substance involved in processing of information, coordination of movement, inhibition, and restraint
norepinephrine
substance active in the central and peripheral nervous systems
dopamine
substance whose function is to activate other substances and aid in exploratory and pleasure seeking behaviors
multidimensional integrative approach
study of psychopathology theorizing that psychological disorders are the product of numerous interacting causal factors
diathesis-stress model
hypothesis that both inherited tendency and specific difficult conditions are required to produce a disorder
vulnerability
susceptibility or tendency to develop a disorder
gene-environment correlation model
hypothesis that people with predisposition for a disorder may create risk factors promoting the disorder
epigenetics
study of factors other than inherited DNA sequence that alter the phenotypic expression of genes
neuroscience
study of the nervous system and its role in behavior, thoughts, and emotions
neuron
individual nerve cell that’s responsible for transmitting information
action potential
short period of electrical activity at the membrane of a neuron responsible for transmitting signals
terminal button
end of an axon where chemicals that carry impulses are stored before release
synaptic cleft
space between nerve cells where chemical carriers act to move impulses from neuron to neuron
neurotransmitter
chemical that carries impulses from one neuron to the next
hormone
chemical messenger produced by the endocrine glands
brain circuits
collection of neural pathways in the central nervous system
agonist
chemical substance that effectively increases the activity of an impulse carrier by imitating its effects
inverse agonist
chemical substance that produces effects opposite those of a particular impulse carrier
reuptake
absorption of a substance back into the discharging neuron after being released
antagonist
chemical substance that decreases or blocks the effects of an impulse carrier
glutamate
amino acid that excites many different neurons, leading to action
learned helplessness
theory that people become depressed when they think they have no control in their lives
modeling
learning through observation and imitation of the behavior of individuals and consequences of that behavior