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SIV neurons' activity can be inhibited by activity in the auditory FAES.

fAES is not tonotopic. Instead, its neurons are responsive to spatial features of sounds. No spatial map has been found in fAES (until at least 2004).

FAES is not exclusively auditory.

The most important cortical input to the SC (in cats) comes from layer V cortical neurons from a number of sub-regions of the anterior ectosylvian sulcus (AES):

  • anterior ectosylvian visual area (AEV)
  • the auditory field of AES (FAES)
  • and the fourth somatosensory area (SIV)

These populations in themselves are uni-sensory.

The auditory field of the anterior ectosylvian sulcus (fAES) has strong corticotectal projections (in cats).

Some cortical areas are involved in orienting towards auditory stimuli:

  • primary auditory cortex (A1)
  • posterior auditory field (PAF)
  • dorsal zone of auditory cortex (DZ)
  • auditory field of the anterior ectosylvian sulcus (fAES)

Only fAES has strong cortico-tectal projections.