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https://www.dailymail.co.uk/health/article-7797607/Buzzing-belt-help-visually-impaired-warning-nearby-objects.html

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Blind people’s brains rewire themselves to help them track moving objects by sound, study shows ‘Enhanced’ hearing allows the visually-impaired to tune into subtle changes of frequency to track movements Ale Matthews-King Health Correspondent Monday 22 April 2019

https://www.independent.co.uk/news/blind-enhanced-hearing-senses-frequency-changes-doppler-effect-daredevil-a8881186.html?fbclid=IwAR0a7GJhVReAd0NqVMBGvnLzV5nvMOjgCEe4iHrZgtd4-Dyho55oK6Yg8Gg