Anosognosia lack of awareness or denial of paralysis of a limb or of the limb itself.
Anoxia the absence of oxygen supply to tissue or an organ; results in cell death.
Antecedent a term used in behavioral psychology to describe a contextual cue that results
in a behavior; part of the three term contingency.
Antecedent-based Behavior Model an evidence-based behavior modification practice.
Anterior front.
Anterior and Posterior Spinocerebellar Tracts these afferent nerve tracts send information
to the cerebellum, helping to interpret proprioception. Locate laterally in the spinal cord and just
anterior or posterior to the mid-line.
,Anterior Cingulate the frontal part of the cingulate cortex (part of the corpus callosum)
that regulates certai autonomic functions, including blood pressure and heart rate. Plays a role in
empathy, impulse control, reward anticipation and decision-making.
Anterior Cord Syndrome common spinal cord syndrome; marked by a loss of muscle
control, pain and temperature sensation, but without loss of proprioception and touch sensation.
Anterior Corticospinal Tract efferent nerve bundle located in the ventral-medial cord;
carries impulses from the motor cortex to muscles and organs.
Anterior Longitudinal Ligament ligament connecting the spinal column; runs in front of
the vertebral bodies.
Anterior Spinal Artery large artery that is fed mainly from the aorta; runs anterior to the
spinal cord and provides blood supply to it.
Anterograde Amnesia inability to create new memories following the event that caused
the amnesia.
,Anti-cholinergic a class of drugs that block the action of the neurotransmitter
acetylcholine in the CNS and peripheral nervous system.
Anxiety condition characterized by feelings of fear or worry; may be associated with other
symptoms such as fatigue, irritability, muscle tension, restlessness, decreased concentration and
changes in sleep.
Apathy lack of concern, feeling or emotion; general disinterest. A symptom of major
depression.
Aphasia loss of ability to understand (receptive) or produce (expressive) language.
Apneic not breathing for a short time.
APOEe4 the genetic allele associated with increased risk for Alzheimer's Disease.
Apoptosis a naturally occurring process that involves a controlled sequence of steps that
tell a cell to terminate itself; cell death.
, Appropriate Auxiliary Aids and Services qualified sign language; oral, relay or tactile
interpreters; video interpreting services; qualified note-takers; computer-assisted real time
transcription services; written materials; telephone handset amplifiers; assistive listening devices,
etc.
Apraxia inability to perform purposeful actions due to damage in certain areas of the
brain.
Apraxia of Speech an oral motor speech disorder in which a person cannot translate what
they want to say into motor plans to initiate speech.
Arachidonic Acid Cascade complicated process in which the body responds to chemical
reactions of prostaglandins, leukotriene and other substances to produce an inflammatory
response in the body.
Arachnoid Mater the spider-web middle layer of the meninges.
Areflexic Bowel decreased reflex control of the anal sphincter due to damage to nerves
that exit the lumbar or sacral areas of the spinal cord.