Disorders Friday!?!?!Or The Audiologic Fandango

Upcoming Talk: Isabelle PeretzMusical & Non-musical BrainsNov. 22 @ 12 noon + LunchRm 2068B South Building

Chapter Outlines for 10 & 11 available on the website

Progress Reports

Volunteers

Vestibular disorders Symptoms

Lack of balance Stabilization Correction

Vertigo Dizziness Nausea

Population Recent acoustic trauma Barometric trauma

Weightlessness Diagnosis

Malfunctioning inner ear Overstimulation

Physical activity Habituation

Stenger Testing Symptoms

Tinnitus Unilateral hearing loss Sporadic pain

Population Anyone

Children Middle-aged industrial workers

Diagnosis Pseudohypacusic Normal ABR Stenger test positive

Stenger Testing II Auditory phenomena

Simultaneous bilateral tone presentation 10 dB HL difference between ears

Only louder tone is heard Stenger administration

Bilateral, simultaneous presentation 10 dB HL difference between ears Poorer ear presented at 10 dB HL, 0 dB HL in good ear

Adjust both ears analogous to normal audiometric threshold Stenger negative

Response to good ear Stenger positive

No response to threshold

Bilateral Pseudohypacusic Yes-No test Procedure

Present tones above/below threshold in each ear

Subject: yes-no to each presentation

Temporal arhythmicity Are no responses

correlated to onset of presentations? Best with children

Pulse-Count Method Rapid succession of tones

presentations Arhythmic presentations Vary ear of presentation Tones above and below admitted threshold

Subject responds with the total number of tones heard Does total correlate with actual tones

presented above threshold Modification

Present all tones above threshold

Why choose Psuedohypacusis?

Veteran benefits Additional health care funding Disability earnings

Post WWII peak (half of reported cases)

Hearing histories for modern soldiers (1-4%)

Industrial worker compensation Compensation, disability benefits Transfer of duties

15-30% of reported cases Children

Poor academic performance excuse Attention-getter

Up to 5% of reported cases