V

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VASOCONSTRICTOR

noun. any drug or other agent which elicits blood vessel constriction so that the girth of the vessels is lessened.

VENLAFAXINE

an antidepressant which functions by blocking the reuptake of norepinephrine and serotonin; it is a member of the SNRI categorization.

VENTRODORSAL

directed or starting from the front to the back of the body.

VERBAL FLUENCY TEST

any of a set of examinations wherein involved parties are requested, within a limited time, to produce words which suit

VERGENCE

noun. a turning motion of the eyes. If they turn inward, the motion is known as convergence; if they turn

VESICLE

noun. a fluid-filled sac-like structure, like any of the synaptic vesicles inside axon terminals which consist of neurotransmitter molecules.

VESTIBULO-OCULAR REFLEX (VOR)

the indeliberate compensatory motion of the eyes which takes place to preserve focus on a visual objective in minor, short

VICARIOUS

adjective. supplementary or second-hand: applied, for instance, to the gratification supplied by observing the encounters of other people in television

VINELAND ADAPTIVE BEHAVIOR SCALES (VABS)

an evaluation of a person's social and personal operating in four regions: correspondence, everyday living abilities, socialization, and motor abilities.

VISCERA

the organs inside any major body space, specifically those organs housed in the abdomen.

VISUAL AMNESIA

loss of the capacity to acknowledge or identify familiar items, published words, or penmanship merely by viewing it, because of

VISUAL CORTEX

the cerebral cortex of the occipital lobe, particularly the striate cortex. With regard to human beings, this takes up a

VISUAL HEARING

the supplementation of vision for hearing. This might be achieved, within limits, by reading lips and comprehension of gestures and

VISUAL RECOGNITION

the capacity to identify an item visually.

VISUAL-SEARCH PERCEPTUAL DISORDER

a disorder demonstrated by trouble in finding a particular numeral within a random array on a board as an outcome

VITAMIN D TOXICITY

a condition elicited by too much ingestion of vitamin D. Prolonged overdose of vitamin D can elicit permanent injury to

VOCAL TRACT

All of the structures which are engaged in vocalization, inclusive of the vocal cords and glottis of the larynx combined

VOICE

1. the noise generated by the larynx and changed by other components of the vocal tract prior to the exit

VOLLEY THEORY

the standard that separate fibers inside an auditory nerve react to one or another stimulant in a swift succession of

VOLUNTEERISM

noun. the custom of lending one's time and effort to acts which add to a positive goal.