The ear does not do a Fourier transform
6 months ago
- #sensory coding
- #auditory processing
- #neuroscience
- The cochlea performs frequency separation via the basilar membrane, with different regions resonating at different frequencies.
- Hair cells on the basilar membrane convert mechanical vibrations into electrical signals through mechanoelectrical transduction.
- The cochlea's filtering resembles a wavelet or Gabor transform, balancing temporal and frequency resolution.
- Human speech occupies a unique time-frequency space, possibly evolved to avoid overlap with other sounds.
- Sensory coding, like tonotopic organization, optimizes ecological relevance and efficiency in processing environmental signals.