ANSWERS LATEST UPDATE
Opponent Process Theory
theory we perceive colors in terms of three pairs of colors: either red or green, blue or
yellow, or black or white
Glial Cell
cell in nervous system that plays a role in the formation of myelin and the blood-brain
barrier, responds to injury, removes debris, and enhances learning and memory
Myelin Sheath
glial cells wrapped around axons that act as insulators of the neuron's signals
Resting Potential
electrical charge difference across the neuronal membrane, when the neuron is not
being stimulated or inhibited
Threshold
membrane potential necessary to trigger an action potential
Action Potential
electrical impulse that travels down the axon triggering the release of neurotransmitters
Forebrain (cerebrum)
forward part of the brain that allows advanced intellectual abilities
Cerebral Hemispheres
two halves of the cerebral cortex, each of which serve distinct yet highly integrated
functions
Corpus Callosum
large band of fibers connecting two cerebral hemispheres
Cerebral Cortex
outermost part of forebrain, responsible for analyzing sensory processing and higher
brain functions
Independent Variable
variable that an experimenter manipulates
Dependent Variable
variable that an experimentor measures to see whether the manipulation has an effect
Operational Definition
a working definition of what a researcher is measuring
Variability
measure of how loosely or tightly bunched scores are
Inferential Statistics
mathematical methods that allow us to determine whether we can generalize findings
from our sample to the full population
Echoic Memory
auditory sensory memory
Short-term Memory
memory system that retains information for limited durations
Decay