Presbycusis and Auditory agnosia

Presbycusis and auditory brainstem responses: a review

Age-related hearing loss (ARHL) or presbycusis is a complex phenomenon consisting of elevation of the hearing levels as well as changes in the auditory processing. Although many adults retain good hearing as they age, hearing loss associated with ageing is common among elderly persons. There are a number of pathophysiological processes underlying age-related changes to functional components. Pr...

Evidence of Double Dissociation in Auditory Agnosia: Implications for Rehabilition

Auditory agnosia caused by a tectal germinoma.

The authors describe a patient with auditory agnosia caused by a tectal germinoma. Despite having normal audiometric tests, the patient failed to recognize words and musical characters. On head MRI, the inferior colliculi were infiltrated by tumor. Neuropsychological tests revealed severe impairment in recognition of environmental sounds and words, defective musical perception, and stop consona...

Auditory agnosia: apperceptive or associative disorder?

Neuropsychological testing of a patient with auditory agnosia showed that certain difficulties in the initial analysis of sounds may be the cause of his inability to understand spoken words and other sounds. Abnormalities included a slow reaction time to brief auditory stimuli (but not to equally brief visual stimuli or to longer auditory stimuli) and the need for approximately 1/4 sec of silen...

Central Auditory Processing in Presbycusis: an Epidemiologic Perspective

Presbycusis (literally elder hearing) or age-related hearing loss is the inevitable deterioration in hearing that occurs as people get older. While loss of the highest frequencies can be detected in young adulthood, it is not until the 6th decade and beyond that clinically significant hearing loss is evident. Presbycusis is a multifactorial process that affects people in their senior years in d...