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DIGITAL SUBTRACTION ANGIOGRAPHY

Used to see blood vessels injected with dye.

DIMETHYL KETONE, ACETYLCHOLINE (ACH)

A neurotransmitter that excites synapses between motor neurons and muscles.

DIPLOPIA

Visual disorder where the eyes see separately and simultaneously. See double vision.

DIRECTED MOVEMENT

Movement toward a goal.

DIRECTORY OF PSYCHOLOGICAL TESTS IN THE SPORT AND EXERCISE SCIENCES

The psychological scales, questionaires and inventories related to sport and exercise.

DISCIPLINE

1. Training used to establish desired habits. 2. Control of conduct by usung punishment and reward. 3. Field of study.

DISCREPANT STIMULUS

A stimulus that varies from aknown stimulus or a schematic image.

DISCRIMINATION LEARNING

A learning experience where a person must make choices between similar alternatives to reach a goal.

DISENGAGEMENT

The act of withdrawing from a relationship or from an unpleasant experience.

DISMISSIVE ATTACHMENT

A style of attachement combining positive internal model of attachement of yourself where you see yourself as competent and worthy

DISPERSION

The degree that a group of scores deviate from the mean. Also called spread.

DISSOCIATIVE AMNESIA

A dissociative disorder. Where a person can't recall important information about experiences because they were traumatic and stressful.

DISTANCE CUE

An auditory or visual cue to determine the distance to an object. See depth cue.

DISTRESS-RELIEF QUOTIENT

The ratio of verbal expressions of distress to those used for relief.

DISYNAPTIC ARC

The neural arc where there is an interneuron between a sensory and a motor neuron. See reflex arc.

DIVORCE COUNSELING

Given to people and family members to help them cope with any problems resulting from a divorce.

DOMAIN

1. Class of entities constituting a subject matter of science. 2. Field of mastery. 3. Biological taxonomy. Highest level of

DOMINANCE-SUBMISSION

Dimension of interpersonal behaviour where behaviour ranges from extreme dominance to extreme subordination. Also called ascendence-submission.

DOPA DECARBOXYLASE

The intermediate enzyme in the metabolism of catacholamines from a dietary amino acid tyrosine.

DORSAL STREAM

The neural stream projected dorsally from the primary visual cortex in to the parietal lobe. Compare ventral pathway.