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Titolo:
Temporal interaction between single spikes and complex spike bursts in hippocampal pyramidal cells
Autore:
Harris, KD; Hirase, H; Leinekugel, X; Henze, DA; Buzsaki, G;
Indirizzi:
Rutgers State Univ, Ctr Mol & Behav Neurosci, Newark, NJ 07102 USA RutgersState Univ Newark NJ USA 07102 hav Neurosci, Newark, NJ 07102 USA
Titolo Testata:
NEURON
fascicolo: 1, volume: 32, anno: 2001,
pagine: 141 - 149
SICI:
0896-6273(20011011)32:1<141:TIBSSA>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SODIUM-CHANNEL INACTIVATION; RAT HIPPOCAMPUS; SYNAPTIC PLASTICITY; NEURONS INVITRO; CA1; SYNAPSES; POTENTIATION; GENERATION; INDUCTION; PATTERNS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Buzsaki, G Rutgers State Univ, Ctr Mol & Behav Neurosci, Newark, NJ 07102 USA Rutgers State Univ Newark NJ USA 07102 i, Newark, NJ 07102 USA
Citazione:
K.D. Harris et al., "Temporal interaction between single spikes and complex spike bursts in hippocampal pyramidal cells", NEURON, 32(1), 2001, pp. 141-149

Abstract

Cortical pyramidal cells fire single spikes and complex spike bursts, However, neither the conditions necessary for triggering complex spikes, nor their computational function are well understood, CA1 pyramidal cell burst activity was examined in behaving rats. The fraction of bursts was not reliably higher in place field centers, but rather in places where discharge frequency was 6-7 Hz. Burst probability was lower and bursts were shorter afterrecent spiking activity than after prolonged periods of silence (100 ms-1 s). Burst initiation probability and burst length were correlated with extracellular spike amplitude and with intracellular action potential rising slope. We suggest that bursts may function as "conditional synchrony detectors," signaling strong afferent synchrony after neuronal silence, and that single spikes triggered by a weak input may suppress bursts evoked by a subsequent strong input.

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Documento generato il 25/01/20 alle ore 04:15:31