Call 413.540.1234 to
schedule an appointment
CONCERN/EAP: 413.534.2625
Billing questions? Call: 413.540.1212
CRISIS: 413.733.6661

Aging & Geriatrics
Resources
Basic InformationLatest News
Few Older Patients Aware of DeprescribingHealth Tip: Stair Safety For Older PeopleFracture Risk Higher for Seniors With DiabetesHealth Tip: Medication Suggestions for Older AdultsU.S. Seniors Getting Healthier, Especially When Wealthy and WhiteShort Duration of Hospice Seen for Seniors at End of LifeHeath Tip: Myths About the Aging BrainRemember This: A Healthy Body Keeps the Mind Sharp, TooIs Dementia Declining Among Older Americans?No Link for Cardiovascular Meds Use, Cognitive ImpairmentToo Much TV May Cost You Your MobilitySmoking Linked to Frailty in SeniorsMore Than Half of Americans Will Need Nursing Home Care: StudyLess Than Half of Seniors With A-Fib Receive AnticoagulantsPatients' Hearing Loss May Mean Poorer Medical CareHow You Think About Your Arthritis Makes a DifferenceDo Fewer Nightly Dreams Mean Higher Dementia Risk in Seniors?Supplement May Help Against Vision-Robbing Disease in SeniorsHealth Tip: Heat and the ElderlyCaregiving Needs Double as End of Life NearsSitting Could Be Big Health Risk for Frail FolksLower Blood Pressure Best for Seniors' MindsPhysical Activity Predicts Disability in Older Adults'On the Move' Group Exercise Program Aids Walking in ElderlyTaking a Stand on Staying Mobile After 80The Right Shoes Can Help Prevent FallsYoga May Boost Aging BrainsHealth Tip: One of Three Adults Gets ShinglesMidlife Behaviors May Affect Your Dementia Risk'Loneliness Epidemic' Called a Major Public Health ThreatProtein at All 3 Meals May Help Preserve Seniors' StrengthInappropriate Med Use High in Cognitively Impaired SeniorsSwitching to Generic Eye Meds Could Save Medicare MillionsIncreased Dementia Risk With Hearing Loss in Older AdultsExercise Not Making Dent in Most Seniors' Down TimeJust Thinking You're Less Active May Shorten Your LifeHealth Benefits of Healthy Lifestyle Quantified in U.S.In Mice, Brain Cells Discovered That Might Control AgingHealth Tip: Adapting After Hip ReplacementTargeting 9 Risk Factors Could Prevent 1 in 3 Dementia Cases: StudyCan Daily Crossword Protect You From Dementia?A Healthy Diet May Help Ward Off DementiaLifestyle Factors Predict Independent Aging in Older MenNew Criteria Urged for Infection Diagnosis Among Seniors in ERCognitive Function Up With Adherence to Mediterranean DietLiving With Purpose May Help Seniors Sleep SoundlySeniors' Lungs Can Tackle ExerciseExercise Can Keep Obese Seniors on the GoPre-, Post-Op C-Reactive Protein Levels Tied to DeliriumA Cheaper Alternative to Hearing Aids?
Questions and AnswersLinksBook ReviewsSelf-Help Groups
Related Topics

Depression: Depression & Related Conditions
Elder Care
Lifespan Development

Hearing Tests May Miss Common Form of Hearing Loss


HealthDay News
Updated: May 2nd 2017

new article illustration

TUESDAY, May 2, 2017 (HealthDay News) -- Commonly used hearing tests often fail to detect a prevalent form of inner ear damage, according to an experimental study published online recently in Frontiers in Neuroscience.

Richard Salvi, Ph.D., from the University at Buffalo in New York, and colleagues selectively destroyed large inner hair cell (IHC)/type I system cells in chinchillas using the ototoxic agent carboplatin to examine how their loss affects hearing.

The researchers found that eliminating IHC/type I neurons had no impact on distortion product otoacoustic emission or on outer hair cell-generated cochlear microphonic potential; however, there was a reduction of the summating potential produced by IHC and the compound action potential (CAP) produced by type I neurons. Although innervating regions of the cochlea had about 80 percent IHC loss, responses from remaining auditory nerve fibers maintained sharp tuning and low thresholds. Until IHC losses exceeded 80 percent, chinchillas with large IHC lesions had surprisingly normal thresholds in quiet. Behavioral thresholds in broadband noise were significantly elevated and greater remote masking was exhibited by tone-in-narrow band noise masking patterns. After IHC lesion, there was a relatively small decline in sound-evoked responses despite a large decrease in CAP amplitude. Sound-evoked responses were generally larger than normal in the auditory cortex, indicating increased central gain.

"These results suggest the auditory system is able to compensate for considerable loss of IHC/type I neurons in quiet but not in difficult listening conditions," the authors write.

Abstract/Full Text