a state of awareness, including a person's feelings, sensations, ideas, and perceptions
a stage of sleep characterized by rapid eye movements, a high level of brain activity, a deep relaxation of the muscles, and dreaming
a condition characterized by suddenly falling asleep of feeling very sleepy throughout the day
sleep disruptions that occur during stage IV sleep, involving screaming, panic, or confusion
a state of consciousness resulting from a narrowed focus of attention and characterized by heightened suggestibility
a suggestion made during hypnosis that influences the participants behavior afterward
the dried leaves and the flowers of indian help (cannabis sativa) that produce an altered state of conciousness when smoked or ingested
lysergiv acid diethylamide, a potent psychadelic drug that produces distortions of perception and thought
the study of the relationships between sensory experiences and the physical stimuli that produces them
the smallest change in a physical stimulus that can be detected between two stimuli
the principle that the larger or stronger a stimulus, the larger the change required for an observer to notive a difference
signal detection theory
the study of people's tendencies to make correct judgements in detecting the presence of stimuli
a method for extracting information automativally ans simultaneously when presented with stimuli
a flexible, transparent structure in the eye that changes its shape to focus light on the retina
the process of combining the images recieved from the two eyes into a single, fused image.
the nerve that carries impulses from the inner ear to the brain resulting in the sensation of sound
three semicircular canals that provide the sense of balance, located in the inner ear and connected to the brain by a nerve
the experience that comes from organizing bits and pieces of information into meaningful wholes
brief auditory or visual messages that are presented below the absolute threshold
objects that appear farther away from another object are higher on your plane of view
overlapping of images causes us to view the object we can see in its entirety to be closer than one whose outline is interrupted by another object.
the apparent movement of stationary objects relative to one another that occurs when the observer changes position
the tendency to percieve certain objects in the same way regardless of changing angle, distance, or lighting
extrasensory perception (ESP)
an ability to gain information by some means other than the ordinary senses.
stage 1 sleep
pulse slows, muscles relzx, breathing becoms uneven, bnrain waves are irregular. "just drifting".
stage 4 sleep
deepest sleep, difficult to waken a sleeper. large regular delta waves occuring more than 50 percent of the time.
the appearance of things relative to one another as determined by their distance from the viewer
A measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave
hearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea
gate control theory
theory that spinal cord contains neurological gate that blocks pains signals or allows them to pass. gate is opened by activity of pain going up small nerve fibers & gate is closed by act of large fibers or by info coming from brain
eyeball is too long, so objects are focused at a point slightly in front of the retina. you can see objects that are near but distant objects seem blurry.