Poor coordination and unsteadiness due to the brain’s failure to regulate the body’s posture and regulate the strength and direction of limb movements. Ataxia is usually due to disease in the cerebellum of the brain, which lies beneath the back part of the cerebrum.
- AT (in DNA)
AT (in DNA): AT stands for adenine and thymine, a base pair in DNA. The other base pair in DNA is GC (guanine and cytosine).
- Auditory acuity
Auditory acuity: The clarity or clearness of hearing, a measure of how well a person hears. Auditory acuity is measured in order to determine a person’s need for a hearing aid.
- Auditory aphasia
Auditory aphasia: Impairment in the understanding of auditory language and communication. Sounds are heard but they convey no meaning. The 20th century Russian composer Vissarion Shebalin had auditory aphasia after a stroke but remained an outstanding composer. The comprehension of auditory language and the musical organization of acoustic perception rely on different systems in the […]
- Auditory cortex
Auditory cortex: The part of the brain that is concerned with hearing. The auditory cortex is the temporal lobe, which the lower lobe of the cerebral hemisphere just forward of the occipital lobe.
- Auditory disease, central
Auditory disease, central: A condition in which there is an inability to differentiate, recognize or understand sounds while both the hearing and intelligence are normal. The problem is “central” as regards the auditory pathways. (In technical terms, a central auditory processing disorder is a disease of the auditory pathways from the bulbar cochlear nuclei to […]