Sound-frequency map for inner ear created with advanced X-ra

Sound-frequency map for inner ear created with advanced X-ray technology


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IMAGE: Ear membrane and auditory nerve in the cochlea. The octave bands have been given different colours. Humans can perceive frequencies from 20 Hz (the top of the coil) to 20,000...
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Credit: Hao Li
Peer review/Experimental study/Cells
Researchers at Uppsala University have created the first 3D map of the hearing nerve showing where the various sound frequencies are captured. Using what is known as synchrotron X-ray imaging, they were able to trace the fine nerve threads and the vibrating auditory organ, the cochlea, and find out exactly how the frequencies of incoming sound are distributed. The study is published in

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