the principle that either a neuron is sufficiently stimulated and an action potential occurs or a neuron is not sufficiently stimulated and an action potential does not occur
What is all or nothing law?
100
The gap between nerve cells or a nerve cell and a muscle cell.
What is the synapse?
100
Group that is exposed to all experimental conditions except the independent variable.
What is the control group?
100
The minimum intensity at which a stimulus can be detected at least 50% of the time.
What is absolute threshold?
100
Biological processes that systematically vary over a period of about 24 hours.
What is circadian rhythm?
200
Branch of the autonomic nervous system that calms the body, maintains body functions, conserves energy
What is the parasympathetic system?
200
Small membrane-bound organelles that holds neurotransmitters at the presynaptic membrane.
What are synaptic vesicles?
200
A measure of variability that indicates the average differences between the scores and their mean.
What is standard deviation?
200
Long, thin visual receptor cells in the retina that are highly sensitive to light but not to color. Primary responsible for peripheral vision and black and white vision.
What are the rods?
200
Stage of sleep during which rapid eye movements and dreams usually occur.
What is REM sleep?
300
Small brain structure that is beneath the thalamus that helps govern the release of hormones by the pituitary gland and regulates drives like hunger and thirst.
What is the hypothalamus?
300
Alzheimer's disease is associated with this neurotransmitter.
What is acetylcholine?
300
The researcher observes or measures two or more naturally occurring variables to find the relationship between them.
What is correlational research?
300
The coiled, snail shaped structure in the inner ear containing the receptors for hearing.
What is the cochlea?
300
A trance-like state of heightened suggestibility. deep relaxation, and intense focus.
What is hypnosis?
400
An almond-shaped part of the limbic system linked to the regulation of emotional responses
What is the amygdala?
400
Depression is related to this neurotransmitter.
What is serotonin?
400
The numerical value from +1 to -1 that indicates the strength and direction of the relationship between two variables.
What is correlation coefficient?
400
The process by which sensory receptors convert the oncoming physical energy of stimuli, such as light waves, into neural impulses that the brain can understand.
What is transduction?
400
The splitting of consciousness into 2 or more simultaneous streams of mental activity.
What is dissociation?
500
Chemical transmitters manufactured by a neuron
What are neurotransmitters?
500
Schizophrenia is linked to this neurotransmitter.
What is dopamine?
500
The probability of concluding that a difference exists when in fact the difference does not exist. A statistically significant difference is a difference not likely due to chance.
What is the P value?
500
The decline in sensitivity to a constant stimulus.
What is sensory adaptation?
500
Theory that uses analysis of dreams to study the personal ways a dreamer organizes spontaneous neural firings as images into a story.