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We have just published a neurobiologically inspired signal processing algorithm that employs chopper and octopus cell properties to enhance the salience of tonal signals such as vocal communication. In this paper
we suggest chopper cell synchronization likely evolved to enhance sensitivity to vocalizations rather than fine pitch perception, which has little evolutionary benefit for early animals (see McLachlan NM and Grayden DB (2014). Enhancement of speech perception
in noise by periodicity processing: A neurobiological model and signal processing algorithm, Speech Communication 57C, pp. 114-125. DOI information: 10.1016/j.specom.2013.09.007).
Other important functional networks that stem from the CN involve learnt motor reflexes via the pons (see Medina et al, with likely learning feedback via the olivary complex) and habituation of hearing sensitivity
by DCN cells. I have a review on these networks currently under review, so hopefully I can share more information in the near future.
Best regards Neil McLachlan From: AUDITORY
- Research in Auditory Perception [mailto:AUDITORY@xxxxxxxxxxxxxxx] On Behalf Of
AUDITORY automatic digest system |