Low-threshold Ca2+-associated bursts are rare events in the LGN of the awake behaving monkey

Octavio Ruiz, David Royal, G. Sáry, Xin Chen, Jeffrey D. Schall, Vivien A. Casagrande

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Abstract

It has been proposed that low-threshold Ca2+ (LT)-associated bursts in the lateral geniculate nucleus (LGN) of awake animals communicate significant or unexpected visual events to cortex. The present study investigated this hypothesis by examining the incidence of LT bursts in 146 cells recorded from the LGN of three macaque monkeys. Bursts were defined as clusters of two or more action potentials separated by not more than 4 ms and preceded by a ≥100-ms quiescent interval. The incidence of bursts was examined in several intensive-training Go-NoGo and target selection tasks as well as in training-free tasks where natural scenes with both familiar and novel contents were shown. Our chief findings were as follows. 1) Bursts occur in the majority of cells under every condition tested, 2) burst incidence is very low (

Original languageEnglish
Pages (from-to)3401-3413
Number of pages13
JournalJournal of Neurophysiology
Volume95
Issue number6
DOIs
Publication statusPublished - Jun 2006

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Geniculate Bodies
Haplorhini
Incidence
Macaca
Action Potentials

ASJC Scopus subject areas

  • Physiology
  • Neuroscience(all)

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Low-threshold Ca2+-associated bursts are rare events in the LGN of the awake behaving monkey. / Ruiz, Octavio; Royal, David; Sáry, G.; Chen, Xin; Schall, Jeffrey D.; Casagrande, Vivien A.

In: Journal of Neurophysiology, Vol. 95, No. 6, 06.2006, p. 3401-3413.

Research output: Contribution to journalArticle

Ruiz, Octavio ; Royal, David ; Sáry, G. ; Chen, Xin ; Schall, Jeffrey D. ; Casagrande, Vivien A. / Low-threshold Ca2+-associated bursts are rare events in the LGN of the awake behaving monkey. In: Journal of Neurophysiology. 2006 ; Vol. 95, No. 6. pp. 3401-3413.
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