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1. What is hearing loss?
2. What are the types and degree of hearing loss?
3. What is SRT & SDS?
4. What are Electrophysiological tests?
BERA (Brainstem Evoked Response Audiometry)
This is a non invasive electrophysiological test, whose clinical applications include:
- New born auditory screening
- Estimation of auditory sensitivity in very young or difficult to test clients such as infants.
- Neurodiagnosis to 8th nerve or auditory brainstem dysfunction.
Elechrochochleography (ECochG)
This electrophysiological test assists in the diagnosis of Menier's disease.
Auditory Middle Latency Responses (AMLR)
AMLRs originate from the auditory thalamus and primary auditory cortex. Reticular formation also contributes to this potential.
Clinical applications include:
- Electrophysiological documentation of auditory dysfunctions above the level of brainstem.
- Estimation of hearing loss in cases with mental retardation.
Mismatch Negativity (MMN)
MMN measures are used in assessing high level auditory processing in children. It helps in the confirmation of neural dysfunction in clinical populations including Parkinsonism, dementia, Alzheimer's disease, stroke, schizophrenia, dysphagia, cochlear implant and hearing aid users and those with central auditory processing disorders.
P300
P300 measures are used for electrophysiological assessment of higher level auditory processing. It helps in ruling out or pinpointing Central Auditory Processing Disorders (CAPD) in cases of learning disabilities, Autistic Spectrum Disorder and Attention Deficit Hyperactive Disorder.
5. What are Oto acoustic emissions?
OAEs are the sounds produced by the outer hair cells of the cochlea.
Clinical Applications:
- Newborn hearing screening. OAE can be recorded reliably in infants as young as a day old. It requires relatively brief test time and is absent or abnormal in persons with even mild degrees of hearing loss.
- Pediatric audiometry
- Assessment in suspected functional hearing loss.
- Differentiation of cochlear vs retrocochlear auditory dysfunction which include auditory neuropathy, auditory idiopathy and acoustic neuroma.
- Monitoring ototoxicity
- Tinnitus: Objective confirmation of cochlear dysfunction in patients with tinnitus with normal PTA
- Noise induced hearing loss: reliable warning sign of cochlear dysfunction.
2. What are the types and degree of hearing loss?
3. What is SRT & SDS?
4. What are Electrophysiological tests?
BERA (Brainstem Evoked Response Audiometry)
This is a non invasive electrophysiological test, whose clinical applications include:
- New born auditory screening
- Estimation of auditory sensitivity in very young or difficult to test clients such as infants.
- Neurodiagnosis to 8th nerve or auditory brainstem dysfunction.
Elechrochochleography (ECochG)
This electrophysiological test assists in the diagnosis of Menier's disease.
Auditory Middle Latency Responses (AMLR)
AMLRs originate from the auditory thalamus and primary auditory cortex. Reticular formation also contributes to this potential.
Clinical applications include:
- Electrophysiological documentation of auditory dysfunctions above the level of brainstem.
- Estimation of hearing loss in cases with mental retardation.
Mismatch Negativity (MMN)
MMN measures are used in assessing high level auditory processing in children. It helps in the confirmation of neural dysfunction in clinical populations including Parkinsonism, dementia, Alzheimer's disease, stroke, schizophrenia, dysphagia, cochlear implant and hearing aid users and those with central auditory processing disorders.
P300
P300 measures are used for electrophysiological assessment of higher level auditory processing. It helps in ruling out or pinpointing Central Auditory Processing Disorders (CAPD) in cases of learning disabilities, Autistic Spectrum Disorder and Attention Deficit Hyperactive Disorder.
5. What are Oto acoustic emissions?
OAEs are the sounds produced by the outer hair cells of the cochlea.
Clinical Applications:
- Newborn hearing screening. OAE can be recorded reliably in infants as young as a day old. It requires relatively brief test time and is absent or abnormal in persons with even mild degrees of hearing loss.
- Pediatric audiometry
- Assessment in suspected functional hearing loss.
- Differentiation of cochlear vs retrocochlear auditory dysfunction which include auditory neuropathy, auditory idiopathy and acoustic neuroma.
- Monitoring ototoxicity
- Tinnitus: Objective confirmation of cochlear dysfunction in patients with tinnitus with normal PTA
- Noise induced hearing loss: reliable warning sign of cochlear dysfunction.
Speech and Hearing Centre
Cochlear Implant Rehabilitation Clinic
'We help you speak and hear better.'
Cochlear Implant Rehabilitation Clinic
'We help you speak and hear better.'