Brainstem auditory evoked potentials

Brainstem auditory evoked potentials

Auditory evoked potentials (AEPs) are a subclass of Event-related potentials (ERPs). For AEPs, the "event" is a sound. AEPs (and ERPs) are very small electrical voltage potentials originating from the brain recorded from the scalp in response to an auditory stimulus (such as different tones, speech sounds, etc.). The AEPs that are recorded from the top of the head originate from structures within the brain (e.g., the auditory cortex, the auditory brainstem structures, the auditory VIIIth cranial nerve). They are very low in voltage: from 2-10 microvolts for cortical AEPs to much less than 1 microvolt from the deeper brainstem structures. Their low voltage combined with relatively high background electrical noise requires the use of highly sensitive amplifiers and computer averaging equipment

Over recent years AEP's have been used to develop a monitor to measure anaesthetic depth and to prevent awareness in surgery.The aepEX depth of anaesthesia monitor was developed by Professor Gavin Kenny and his team at Glasgow University and is manufactured in Braintree, Essex by Medical Device Management Ltd.


Wikimedia Foundation. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • Evoked potential — Intervention MeSH D005071 An evoked potential (or evoked response ) is an electrical potential recorded from the nervous system of a human or other animal following presentation of a …   Wikipedia

  • Auditory neuropathy — is a variety of hearing loss in which the outer hair cells within the cochlea are present and functional, but sound information is not faithfully transmitted to the auditory nerve and brain properly. A neuropathy simply refers to a disease of the …   Wikipedia

  • Auditory brainstem response (ABR) test — A test for hearing and brain (neurological) functioning. ABR may be used in the evaluation of: {{}}Neurologic integrity (and hearing) in patients who are comatose, unresponsive, or impaired due to a stroke, an acoustic neuroma (tumor on the… …   Medical dictionary

  • Auditory brainstem response — The auditory brainstem response (ABR) is an auditory evoked potential extracted from ongoing electrical activity in the brain and recorded via electrodes placed on the scalp. The resulting recording is a series of vertex positive waves of which I …   Wikipedia

  • ABR (auditory brainstem response) test — A test for hearing and brain (neurological) functioning. ABR may be used in the evaluation of: {{}}Neurologic integrity (and hearing) in patients who are comatose, unresponsive, or impaired due to a stroke, an acoustic neuroma (tumor on the… …   Medical dictionary

  • Test, auditory brainstem response (ABR) — A test for hearing and brain (neurological) functioning. ABR may be used in the evaluation of: {{}}Neurologic integrity (and hearing) in patients who are comatose, unresponsive, or impaired due to a stroke, an acoustic neuroma (tumor on the… …   Medical dictionary

  • Vestibular evoked myogenic potential — The vestibular evoked myogenic potential or VsEP is a neurophysiological assessment technique used to determine the function of the otolithic organs (utricle and saccule) of the inner ear. It complements the information provided by caloric… …   Wikipedia

  • Primary auditory cortex — Infobox Brain Name = Primary auditory cortex Latin = GraySubject = GrayPage = Caption = Brodmann areas 41 42 of the human brain. Caption2 = The Primary Auditory Cortex is highlighted in magenta, and has been known to interact with all areas… …   Wikipedia

  • Ondine's curse — Classification and external resources ICD 10 G47.3 ICD 9 348.8 …   Wikipedia

  • Hearing range — for more detail on human hearing see Audiogram,Equal loudness contours and Hearing impairment. Hearing range usually describes the range of frequencies that can be heard by an animal or human, though it can also refer to the range of levels. In… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”