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LETTER Communicated by Christopher Moore Temporal Decoding by Phase-Locked Loops: Unique Features
 

Summary: LETTER Communicated by Christopher Moore
Temporal Decoding by Phase-Locked Loops: Unique Features
of Circuit-Level Implementations and Their Significance for
Vibrissal Information Processing
Miriam Zacksenhouse
memz@tx.technion.ac.il
Sensory-Motor Integration Laboratory, Technion Institute of Technology, Haifa, Israel
Ehud Ahissar
ehud.ahissar@weizmann.ac.il
Department of Neurobiology, Weizmann Institute, Rehovot, Israel
Rhythmic active touch, such as whisking, evokes a periodic reference
spike train along which the timing of a novel stimulus, induced, for ex-
ample, when the whiskers hit an external object, can be interpreted. Previ-
ous work supports the hypothesis that the whisking-induced spike train
entrains a neural implementation of a phase-locked loop (NPLL) in the
vibrissal system. Here we extend this work and explore how the entrained
NPLL decodes the delay of the novel, contact-induced stimulus and fa-
cilitates object localization. We consider two implementations of NPLLs,
which are based on a single neuron or a neural circuit, respectively, and
evaluate the resulting temporal decoding capabilities. Depending on the

  

Source: Ahissar, Ehud - Department of Neurobiology, Weizmann Institute of Science

 

Collections: Biology and Medicine