Spontaneous plasticity of multineuronal activity patterns in activated hippocampal networks.

Abstract:

:Using functional multineuron imaging with single-cell resolution, we examined how hippocampal networks by themselves change the spatiotemporal patterns of spontaneous activity during the course of emitting spontaneous activity. When extracellular ionic concentrations were changed to those that mimicked in vivo conditions, spontaneous activity was increased in active cell number and activity frequency. When ionic compositions were restored to the control conditions, the activity level returned to baseline, but the weighted spatial dispersion of active cells, as assessed by entropy-based metrics, did not. Thus, the networks can modify themselves by altering the internal structure of their correlated activity, even though they as a whole maintained the same level of activity in space and time.

journal_name

Neural Plast

journal_title

Neural plasticity

authors

Usami A,Matsuki N,Ikegaya Y

doi

10.1155/2008/108969

subject

Has Abstract

pub_date

2008-01-01 00:00:00

pages

108969

eissn

2090-5904

issn

1687-5443

journal_volume

2008

pub_type

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