the ear

Hear it Like Your Grandmother - Simulating Age Related Hearing Loss

As we age, our auditory sensitivity often declines, and the average decline is perhaps a lot more than you might think!

Lectures

 

 

Lecture handouts and some video recordings of lectures given to the 2nd year biomedical science course in Audiotory Neuroscience.

 

1) The nature of sound

2) Ear and Brain

Music to Deaf Ears - podcast

This podcast by science journalist Dr Carinne Piekema explores how hearing loss affects people, in particular how it affects musicians, and what modern prosthetic devices such as hearing aids or cochlear implants can and cannot do for these patients. It contains insightful interviews with inspirational deaf musicians, some of the UKs leading hearing researchers, as well as simulations designed to show to normal listeners what it would be like to have to rely on a hearing aid or a cochlear implant.

You can listen to the podcast here,

Basilar Membrane Motion 4: Bach's Tocata & Fugue

This video created by the Howard Hughes Medical institute © for Prof Jim Hudspeth illustrates basilar membrane motion in response to a piece of music, (J.S. Bach's Toccata & Fugue in D-minor).

 

Basilar Membrane Motion 3: Click Trains - Animation

 

And another animation showing the mechanical response of the basilar membrane, but this time the incoming sound is a 500 Hz click train i.e. one click every 2 milliseconds. Such click trains sound like a "buzz" with a very clear pitch at the click rate.

Basilar Membrane Motion 2: Isolated Clicks - Animation

Here another animation showing the mechanical response of the basilar membrane, but this time the incoming sound is not the sum of two sine waves, but a single "ideal impulse", or click.

The top trace shows the click stimulus. Think of the click as travelling through air, but also impinging on the cochlea at time zero. The bottom trace shows the basilar membrane, with distance from the basal end on the x-axis.

Acoustic cues for sound location

This figure shows acoustic cues to sound source direction. It is a color version of Fig. 5-2 of "Auditory Neuroscience", and is based on acoustic recordings from my own ears carried out by Prof Doris Kistler at the University of Wisconsin at Madison.
 

 

spatial cues

 

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