‘Singing rats’ may harbour cure for old-age problems

A new study has found that vocal training of older rats reduces some of the voice problems related to their ageing, such as the loss of vocal intensity that accompanies changes in the muscles of the larynx.

A new study has found that vocal training of older rats reduces some of the voice problems related to their ageing, such as the loss of vocal intensity that accompanies changes in the muscles of the larynx.

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Researchers hope that voice therapy in ageing humans will help improve their quality of life. Audio Rats make ultrasonic vocalisations (USVs) that are above the range of human hearing, but special recording equipment and a computer that lowers the frequency of the rat calls allows humans to perceive them.