Optogenetic field potential recording in cortical slices.

Optogenetic field potential recording in cortical slices.
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DOI:
10.1016/j.jneumeth.2012.07.019
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发表时间:
2012-09-30
影响因子:
3
通讯作者:
Jin, Xiaoming
Jin, Xiaoming
中科院分区:
医学4区
文献类型:
--
作者:
Xiong, Wenhui;Jin, Xiaoming

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We introduce a method that uses optogenetic stimulation to evoke field potentials in brain slices prepared from transgenic mice expressing Channelrhodopsin2-YFP. Cortical slices in a recording chamber were stimulated with a 473 nm blue laser via either a laser scanning photostimulation setup or by direct guidance of a fiber optic. Field potentials evoked by either of the two optogenetic stimulation methods had stable amplitude, consistent waveform, and similar components as events evoked with a conventional stimulating electrode. The amplitude of evoked excitatory postsynaptic potentials increased with increasing laser intensity or pulse duration. We further demonstrated that optogenetic stimulation can be used for the induction and monitoring of long-term depression. We conclude that this technique allows for efficient and reliable activation of field potentials in brain slice preparation, and will be useful for studying short and long term synaptic plasticity.
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