auditory brainstem response

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response

 [re-spons´]
any action or change of condition evoked by a stimulus.
acute phase response a group of physiologic processes occurring soon after the onset of infection, trauma, inflammatory processes, and some malignant conditions. The most prominent change is a dramatic increase of acute phase proteins in the serum, especially C-reactive protein. Also seen are fever, increased vascular permeability, and a variety of metabolic and pathologic changes.
anamnestic response the rapid reappearance of antibody in the blood following introduction of an antigen to which the subject had previously developed a primary immune response.
auditory brainstem response ABR; a special hearing test that tracks the nerve signals arising in the inner ear as they travel along the auditory nerve to the brain region responsible for hearing. A small speaker placed near the ear makes a clicking sound, and special electrodes record the nerve signal as it travels. The test can determine where along the nerve there is a lesion responsible for sensorineural hearing loss. It is often used for individuals with such loss in just one ear; this is often caused by a benign tumor along the auditory nerve, but if the ABR reading is normal in a given region, the chances of there being a tumor there are small. This test can also be used on infants since it requires no conscious response from the person being tested.
autoimmune response the immune response in which antibodies or immune lymphoid cells are produced against the body's own tissues. See also autoimmune disease.
conditioned response see conditioned response.
dysfunctional ventilatory weaning response a nursing diagnosis adopted by the North American Nursing Diagnosis Association, defined as inability of a patient to adjust to lowered levels of mechanical ventilator support, which interrupts and prolongs the process of weaning. See also mechanical ventilatory weaning.
galvanic skin response the alteration in the electrical resistance of the skin associated with sympathetic nerve discharge.
immune response see immune response.
inflammatory response the various changes that tissue undergoes when it becomes inflamed; see inflammation.
post-trauma response former name for the nursing diagnosis post-trauma syndrome.
reticulocyte response increase in the formation of reticulocytes in response to a bone marrow stimulus.
triple response (of Lewis) a physiologic reaction of the skin to stroking with a blunt instrument: first a red line develops at the site of stroking, owing to the release of histamine or a histamine-like substance, then a flare develops around the red line, and lastly a wheal is formed as a result of local edema.
unconditioned response an unlearned response, i.e., one that occurs naturally, in contrast to a conditioned response.

au·di·to·ry brain·stem re·sponse (ABR),

an electrophysiologic measure of auditory function using computer-averaged responses produced by the auditory nerve and the central auditory pathways principally in the brainstem to repetitive acoustic stimuli. ABR is also used to locate brainstem lesions and determine whether a hearing impairment is sensory or neural.

auditory brainstem response

n.
An electronic measure of auditory function using responses produced by the auditory nerve and the brainstem.

auditory brainstem response (ABR)

an electrophysiological test used to measure hearing sensitivity and evaluate the integrity of ear structures from the auditory nerve through the brainstem. It is also used to screen hearing of newborns.

au·di·to·ry brain·stem re·sponse

(ABR) (aw'di-tōr-ē brān'stem rĕ-spons')
A response produced by the auditory nerve and the brainstem to repetitive acoustic stimuli.
Synonym(s): brainstem evoked response.

au·di·to·ry brain·stem re·sponse

(ABR) (aw'di-tōr-ē brān'stem rĕ-spons')
Electrophysiologic measure of auditory function using computer-averaged responses produced by the auditory nerve and the central auditory pathways principally in the brainstem to repetitive acoustic stimuli.
Synonym(s): brainstem evoked response.
References in periodicals archive ?
Findings revealed abnormal auditory brainstem evoked responses (BSER) to a unique dichotic stimulus called Virtual Image Analysis (VIA) (Dalton and Cooper, 1985, United States Patent #4,5560601985) expanded the clinically established brainstem evoked response paradigm by adding a third dimension to the results.
We assessed the evolution of children with delayed maturation of auditory pathways by brainstem evoked response audiometry (BERA).
During our 10 years' experience with brainstem evoked response audiometry (BERA) in children, we have observed a high incidence of lengthening of the interval between waves I and V in patients with suspected audiologic or neurologic disturbances.
Unlike traditional brainstem evoked response recordings using simple clicks or tone bursts, the BioMAP uses a speech syllable that better reflects the acoustic and phonetic complexities characteristic of speech.
Prior to 1995, the man had undergone brainstem evoked response audiometry (BERA), computed tomography (CT), and a neurologic examination.
Computerized tomography, magnetic resonance imaging, the electron microscope, electrocochleography, and early latency brainstem evoked response audiometry were perfected.

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