accommodation reflex | reflex changes in the eyes that enable an object to be focused on the retina |
Babinski Babinski reflex Babinski sign | extension upward of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front, normal in infants under the age of two years but a sign of brain or spinal cord injury in older persons |
defecation reflex rectal reflex | normal response to the presence of feces in the rectum |
reflex reflex response reflex action instinctive reflex innate reflex inborn reflex unconditioned reflex physiological reaction | an automatic instinctive unlearned reaction to a stimulus |
conditional reflex conditioned reflex acquired reflex conditional reaction conditioned reaction conditional response conditioned response | an acquired response that is under the control of (conditional on the occurrence of) a stimulus |
knee jerk knee-jerk reflex patellar reflex | a reflex extension of the leg resulting from a sharp tap on the patellar tendon |
startle reflex Moro reflex | a normal reflex of young infants, a sudden loud noise causes the child to stretch out the arms and flex the legs |
light reflex pupillary reflex miosis myosis | reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller |
micturition reflex | relaxation of the urethral sphincter in response to increased pressure in the bladder |
pharyngeal reflex gag reflex | normal reflex consisting of retching, may be produced by touching the soft palate in the back of the mouth |
pilomotor reflex gooseflesh goose bump goosebump goose pimple goose skin horripilation | reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation |
plantar reflex | flexion of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front in persons over the age of years, under years the results should be extension of the toes (Babinski reflex) |
rooting reflex | reflex consisting of head-turning and sucking movements elicited in a normal infant by gently stroking the side of the mouth or cheek |
stretch reflex myotactic reflex | reflex contraction of a muscle when an attached tendon is pulled, important in maintaining erect posture |
suckling reflex | reflex behavior in newborn mammals, includes finding and grasping the nipple in the mouth and sucking on it and swallowing the milk |
measurement measuring measure mensuration | the act or process of assigning numbers to phenomena according to a rule, the measurements were carefully done, his mental measurings proved remarkably accurate |
mental measurement | a generic term used to cover any application of measurement techniques to the quantification of mental functions |
reflex camera | camera that allows the photographer to view and focus the exact scene being photographed |
reflex arc | the neural path of a reflex |
generalization generalisation stimulus generalization stimulus generalisation | (psychology) transfer of a response learned to one stimulus to a similar stimulus |
stimulation stimulus stimulant input | any stimulating information or event, acts to arouse action |
conditioned stimulus | the stimulus that is the occasion for a conditioned response |
reinforcing stimulus reinforcer reinforcement | (psychology) a stimulus that strengthens or weakens the behavior that produced it |
positive reinforcing stimulus positive reinforcer | a reinforcing stimulus that serves to increase the likelihood of the response that produces it |
negative reinforcing stimulus negative reinforcer | a reinforcing stimulus whose removal serves to decrease the likelihood of the response that produced it |
discriminative stimulus cue | a stimulus that provides information about what to do |
positive stimulus | a stimulus with desirable consequences |
negative stimulus | a stimulus with undesirable consequences |
aversive stimulus | any negative stimulus to which an organism will learn to make a response that avoids it |
system of measurement metric | a system of related measures that facilitates the quantification of some particular characteristic |
unit of measurement unit | any division of quantity accepted as a standard of measurement or exchange, the dollar is the United States unit of currency, a unit of wheat is a bushel, change per unit volume |
scale scale of measurement graduated table ordered series | an ordered reference standard, judging on a scale of to |
gauge standard of measurement | accepted or approved instance or example of a quantity or quality against which others are judged or measured or compared |
reflex angle | an angle greater thandegrees (but less than ) |
reflex epilepsy | a form of epilepsy in which attacks are induced by peripheral stimulation |
automatic reflex(a) reflexive | without volition or conscious control, the automatic shrinking of the pupils of the eye in strong light, a reflex knee jerk, sneezing is reflexive |