Firing coincidences between neighboring retinal ganglion cells: inside information or epiphenomenon?


Levine M., Castaldo K., Kasapoglu M.

BIOSYSTEMS, cilt.67, ss.139-146, 2002 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 67
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0303-2647(02)00072-2
  • Dergi Adı: BIOSYSTEMS
  • Sayfa Sayıları: ss.139-146

Özet

Retinal ganglion cells often fire impulses in synchrony; is this synchronization an irrelevant by-product of processing shared inputs, or does it encode information? We examined the rate of occurrence of coincident impulses from pairs of ganglion cells responding to stimuli that varied along several dimensions. We find that coincidences convey little if any additional information about simple static stimuli beyond what could be determined from the firing rates of the two cells considered separately. In fact, at least one of the separate cells generally provided a better information channel than the coincidence rate, implying that under these conditions ganglion cells do not employ a strategy of encoding by coincidences. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved.