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Topic: Auditory Brainstem Response test

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	What is the BAER test? (Site not responding. Last check: 2007-10-23)
		The hearing test known as the brainstem auditory evoked response (BAER) or brainstem auditory evoked potential (BAEP) detects electrical activity in the cochlea and auditory pathways in the brain in much the same way that an antenna detects radio or TV signals or an EKG detects electrical activity of the heart.
		The response waveform consists of a series of peaks numbered with Roman numerals: peak I is produced by the cochlea and later peaks are produced within the brain.
		The response is collected with a special computer through extremely small electrodes placed under the skin of the scalp: one in front of each ear, one at the top of the head, and one between and behind the eyes.
	www.lsu.edu /deafness/baerexpl.htm (341 words)

	Otolaryngology / ENT Glossary (Site not responding. Last check: 2007-10-23)
		Auditory Brainstem Response test: A test for brain functioning in comatose, unresponsive, etc., patients, and for hearing in infants and young children; involves attaching electrodes to the head to record electrical activity from the hearing nerve and other parts of the brain.
		Auditory nerve: The eighth cranial nerve that connects the inner ear to the brainstem and is responsible for hearing and balance.
		Brainstem Implant: An auditory prosthesis that bypasses the cochlea and auditory nerve.
	www.mcg.edu /Otolaryngology/glossary.htm (5504 words)

	Health and Medical Information produced by doctors - MedicineNet.com
		An auditory brainstem response test (ABR) is an electrical measurement of the first ten mili-seconds of the hearing (auditory) stimulus.
		The test is performed by placing various electrodes on the head and scalp.
		Continious noise is presented to the ear, and the electrical response measured.
	www.medicinenet.com /script/main/ques.asp?qakey=29554 (226 words)

	Hearing in Neuronopathic Gaucher Disease (Site not responding. Last check: 2007-10-23)
		Hearing tests such as the auditory brainstem response test can be used to detect and monitor neurological deficits and is being used as a secondary outcome measure in the Zavesca trial for Type 3 Gaucher Disease.
		Although the auditory brainstem response test is sensitive to brainstem dysfunction, it does not detect higher level (cortical) processing abnormal-ities.
		These tests will be an ideal way to detect a child's ability to process information without relying on the child to be able to respond in a conventional way such as speaking or pointing.
	www.wisebuy.co.uk /gaucher/hearingmay2005.htm (293 words)

	Sudden Hearing Loss
		Depending on the outcome of those tests, further tests may be recommended such as the auditory brainstem response test and a MRI scan of the inner ear.
		Immittance testing may also be completed to assess the physical status of the eardrum and middle ear muscle reflexes.
		Special auditory tests, such as the auditory brainstem response test which measures the brain's responses to sound, and x-rays, such as the MRI scan, can serve to confirm the diagnoses or at least to rule out some possible causes for the symptoms.
	www.hearingcenter.com /info_files/sudloss.html (570 words)

	Glossary - My Baby's Hearing
		a test that can be used to assess auditory function in infants and young children using electrodes on the head to record electrical activity from the hearing nerve.
		Bone conduction testing is completed using a bone oscillator (vibrator) that is placed on the mastoid bone behind the ear or on the forehead.
		a pediatric hearing test procedure in which the child's responses to sound are reinforced with a visual event (e.g., a moving toy).
	www.babyhearing.org /HearingAmplification/Glossary/index.asp (2622 words)

	Auditory Brainstem Response Test
		The Auditory Brainstem Response is used to evluate the function of the nerve for hearing and balance and critical structures in the brain.
		Unlike other testing that is typically done for balance disorders, this test is not effected by sedation or any type of medication.
		This test is extremlely sensitive to screen for any problem within the brain that could be affecting your balance.
	www.manateehearing.com /abrtest.asp (129 words)

	JRTCA - Jack Russell - Medical: Brainstem Auditory Evoked Response (BAER)
		The test can be done quickly (with the appropriate equipment), and will give a definitive record of each ear's response to sound.
		Since deafness is a genetic defect, and since it appears essentially at 2-3 weeks of age, testing the pup anytime after 5 weeks of age with the BAER has become an excellent way to identify the auditory status of individual dogs.
		Responsible stud dog owners should never breed to a bitch that has not been BAER tested.
	www.terrier.com /breed/baer.php3 (409 words)

	WVU :: School of Medicine :: Otolaryngology
		It is especially important to test those infants who have the following high risk factors for hearing loss: family history of hearing loss, perinatal infection, craniofacial anomalies, low birth weight, hyperbilirubinemia, bacterial meningitis, severe asphyxia, persistent fetal circulation, and stigmata associated with a syndrome known to include a hearing loss.
		In addition to a physical examination of the ear, various types of hearing tests may be performed to determine the type and degree of hearing loss.
		These hearing tests include the pure tone hearing test, tympanogram, auditory brainstem response testing, otoacoustic emissions testing, electrocochleography, auditory steady state response, or other tests, depending on the age of the patient and the suspected problem.
	www.hsc.wvu.edu /som/otolaryngology/hearingTesting.asp (438 words)

	National Deaf Children's Society - Understanding deafness (Site not responding. Last check: 2007-10-23)
		This test is usually used as a screening test to see if your child needs to be referred to the audiology department for further tests.
		Tests involving toys and play are used as part of the assessment and it involves your child listening for a variety of different sounds as part of a game.
		The bone conduction test shows the inner ear is receiving the signal clearly, but the air conduction test shows the amount of sound being blocked out by the fluid or other obstruction in the outer or middle ear.
	www.ndcs.org.uk /information/childhood_deafness/understanding_deafness (3225 words)

	The Hearing, Speech-Language and Learning Center
		The auditory brainstem response test (ABR) is used to rule out the presence of acoustic tumors or other damage to the auditory nerve.
		Results of this test are used to assist in recommending treatment for balance disorders.
		It is an objective test of auditory function that does not require behavioral responses from the patient.
	www.wehealny.org /services/hearing/services/hearing/diagnostic.html (119 words)

	Auditory Brainstem Response Evaluation (Site not responding. Last check: 2007-10-23)
		The ABR test can provide useful information about the type and amount of hearing loss, the effect on communication abilities, and the functioning of the hearing nerve.
		The ABR test consists of sounds that are presented to a child's ears through earphones while the child sleeps quietly in a crib or in a parent's arms.
		The responses are measured through small electrodes taped on the infant's head and than analyzed by computer.
	www.amaisd.org /deafed/deabsr.html (96 words)

	AS105 - Auditory Brainstem Response (ABR) Testing (Site not responding. Last check: 2007-10-23)
		These response signals are so small that they are frequently masked by the "background noise" of electrical activity in the brain.
		However, since the evoked response is dependent on the stimulus, it should occur at the same time relative to the stimulus when the process is repeated.
		One of the most important factors in ABR testing is reducing the amount of impedance between the electrode and the skin’s surface.
	www.biopac.com /AppNotes/app105ABR/ABRTesting.htm (1505 words)

	Audiology at Capital Region Otolaryngology Head & Neck Group (Site not responding. Last check: 2007-10-23)
		The purpose of this test is to measure the speed of conduction of nerve impulses along the hearing nerve.
		An Auditory Brainstem Response test (ABR) is a non-obtrusive test to make sure that the auditory nerve (nerve for hearing) is spontaneously sending impulses to the brain as you hear sound.
		The only preparation for the test is to remove any make-up from the forehead, or earrings from the ears prior to coming for the test.
	www.capitaloto.com /abr.htm (360 words)

	Audiological Consultants of Atlanta/America - ABR (Site not responding. Last check: 2007-10-23)
		It can be used to estimate the sensitivity of the ear to sound, such as in the testing of newborns, older children who cannot perform well on a regular hearing test, or even adults who are unable to accurately complete a regular hearing test.
		To complete the ABR test, electrodes are pasted and taped to the scalp and earlobes and soft foam tips are inserted into the ear canals.
		These sounds cause nerve responses that are picked up by the electrodes and passed on to sophisticated equipment to record these responses.
	www.audioconsult.com /abr.html (272 words)

	Hearing Tests
		Auditory brainstem response (ABR) - a test that uses electrodes (wires) attached with adhesive to the baby's scalp.
		This test relies on the cooperation of the child, which may not always be given.
		This is a difficult test to perform in younger children because the child needs to sit very still and not be crying, talking, or moving.
	www.chw.org /display/PPF/DocID/21456/router.asp (583 words)

	eMedicine - Auditory Brainstem Response Audiometry : Article by Neil Bhattacharyya, MD (Site not responding. Last check: 2007-10-23)
		Auditory brainstem response (ABR) audiometry typically uses a click stimulus that generates a response from the basilar region of the cochlea.
		The response is believed to originate from afferent activity of the CN VIII fibers (first-order neurons) as they leave the cochlea and enter the internal auditory canal.
		Auditory brainstem response (ABR) audiometry is considered an effective screening tool in the evaluation of suspected retrocochlear pathology such as an acoustic neuroma or vestibular schwannoma.
	www.emedicine.com /ent/topic473.htm (2641 words)

	Healthopedia.com - Brainstem Auditory Evoked Response Test (BAER Test, Auditory Brain Stem Response, ABR, Evoked ...
		Because the response to BAER is involuntary, this test is used to check hearing in those who cannot respond or cooperate, such as babies, young children, and people in comas.
		The test may be done on newborns to check hearing.
		Brainstem Auditory Evoked Response Test: Preparation & Expectations
	www.healthopedia.com /brainstem-auditory-evoked-response-test (378 words)

	Summer 1997 News > Brainstem Auditory Evoked Response
		A Brainstem Auditory Evoked Response is a neurodiagnostic test that records the response to an external auditory stimulus.
		The test works in the following way: An animal is sedated, the stimulating ear pieces are placed in the ear canals, and the recording electrodes are placed under the skin over the top of the head ("vertex"), and beneath each ear ("bullae").
		Results are not always as "clear-cut" when the test is used for this purpose, but the BAER can provide evidence to help confirm brain disease, or in rare instances, to indicate "brain death" in a severely compromised animal.
	www.southpaws.com /news/97-2-baer.html (487 words)

	Evoked potential test for multiple sclerosis
		Auditory brain stem evoked response or potential (ABER or ABEP), which is when hearing is stimulated by listening to a test tone.
		The visual evoked response (VER) is the most commonly used evoked potential test in the diagnosis of multiple sclerosis (MS).
		The time between the stimulation and the response is called the latency, which indicates the speed at which the nerves pass a signal.
	www.webmd.com /hw/multiple_sclerosis/hw190600.asp (476 words)

	BAER - brainstem auditory evoked response (Test) : WakeMed: Raleigh, Cary, Wake County, Johnston County, Clayton, North ...
		BAER - brainstem auditory evoked response (Test) : WakeMed: Raleigh, Cary, Wake County, Johnston County, Clayton, North Carolina, NC To search for a specific phrase enclose that phrase in quotes.
		The brainstem auditory evoked response (BAER) test measures responses in brain waves that are stimulated by a clicking sound to evaluate the central auditory pathways of the brainstem.
		The test is performed to help diagnose nervous system abnormalities, hearing losses (especially in low-birth-weight newborns), and to assess neurologic functions.
	www.wakemed.org /15274.cfm (401 words)

	CAPITOL EAR, NOSE, & THROAT, P (Site not responding. Last check: 2007-10-23)
		Your child is scheduled for an ABR (Auditory Brainstem Response) test at Capitol Ear Nose and Throat.
		It is important that you deprive your child of sleep for about four hours before the test and to try not feeding them.
		Once your child is asleep, the test is ready to begin.
	www.capitolent.net /abrslp.htm (365 words)

	Auditory Brainstem Response Testing (Site not responding. Last check: 2007-10-23)
		The auditory brainstem response is an electrical response to sound that travels from the cochlea to the brain along the auditory nerve.
		This test is helpful in estimating hearing sensitivity and determining retrocochlear pathology by giving us information about the functioning of the brainstem.
		It is important to remember that the ABR is not an actual test of hearing.
	www.hnms-ent.com /Pages/PatientServices/806.html (204 words)

	The brainstem auditory evoked response test (BAER), is... Hartford, Connecticut CT
		The brainstem auditory evoked response test (BAER), is...
		The brainstem auditory evoked response test (BAER), is performed to help diagnose nervous-system abnormalities, hearing losses (especially in low-birth weight newborns), and to assess neurologic functions.
		The test focuses on changes and responses in brain waves.
	www.saintfranciscare.com /16239.cfm (86 words)

	Ear, Nose and Throat Glossary
		auditory brainstem response (ABR) test - test used for hearing in infants and young children, or to test for brain functioning in unresponsive patients.
		auditory nerve - eighth cranial nerve that connects the inner ear to the brainstem.
		otitis externa - inflammation of the outer part of the ear extending to the auditory canal.
	www.chw.org /display/router.asp?DocID=21533 (1352 words)

	Auditory Steady-State-Response System Testing (Site not responding. Last check: 2007-10-23)
		The primary tests used to diagnose hearing loss in this very young population are physiologically based, specifically auditory evoked potential tests.
		These tests are objective and evaluate the brain's response to sound while the baby is asleep.
		The ASSR system's primary advantage over the standard evoked potential test is the ability to differentiate between severe and profound hearing loss as well as distinguishing between levels of profound hearing losses, e.g.
	www.lhh.org /earlyid/assr.htm (427 words)

	What happens at a hearing test? (Site not responding. Last check: 2007-10-23)
		For babies and toddlers, experts use tests that don't require a voluntary response to sound (a baby can't be expected to raise her hand when she hears a beep).
		The two most common types for young children are the otoacoustic emissions test (OAE) and the auditory brainstem response test (ABR).
		In these tests, your child sits with you in a sound-treated room and is taught a particular way to respond when she hears a sound — for example, turning her head to look for a flashing light or a moving toy.
	www.babycenter.com /expert/baby/babydevelopment/7334.html (734 words)

	pons calcification
		I had a hearing test that led to an auditory brainstem response test, which was abnormal.
		Next I had a MRI which revealed what they thought to be either a torturous blood vessel or aneurysm or a calcified area.
		There is a small subset that have remaining hyperacusis (loud sounds causing problems) but you would have had this from whenever you had the Bell's palsy and your auditory test would have picked this up, since it sounds like you didn't, your not one of the small minority of patients who have this problem.
	www.medhelp.org /forums/neuro/archive/13308.html (681 words)

	Auditory-Verbal Therapy at the Learning to Listen Foundation - All Things Well (Site not responding. Last check: 2007-10-23)
		By the time of Annie's first auditory brainstem response test in the ICU at the Children's Hospital of Eastern Ontario, we were so terrified our daughter was dying, that discovering she was "stone deaf" didn't even register.
		The audiology department at the Hospital for Sick Children gave Annie another auditory brainstem response (ABR) test, and we were overjoyed when the computer print-out showed a response at 50 dB in her right ear and 90 dB in the left.
		The trick is to integrate the "learning to listen" concepts into your family's daily life and not to be constantly "testing" them.
	www.learningtolisten.org /annie2.php (3107 words)

	Douglas Island Veterinary Service - BAER
		Because the response amplitude is so small it is necessary to average the responses to multiple stimuli (clicks) to unmask them from the other unrelated electical activity that is also present on the scalp (EEG, muscle activity, etc).
		The response is collected with a special computer through extremely small electrodes placed under the skin of the scalp: one in front of each ear, one at the top of the hea, and one between and behind the eyes.
		If is rare for a dog to show any evidence of pain from the placement of the electrodes, if anything, the dog objects to the gentle restraint and the irritation of wires hanging in front of its face.
	home.gci.net /~divs/assisted/baer.html (316 words)

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