Single synaptic inputs drive high-precision action potentials in parvalbumin expressing GABA-ergic cortical neurons in vivo.
Single synaptic inputs drive high-precision action potentials in parvalbumin expressing GABA-ergic cortical neurons in vivo.
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DOI:
10.1038/s41467-018-03995-2
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发表时间:
2018-04-18
影响因子:
16.6
通讯作者:
Poulet JFA
中科院分区:
文献类型:
--
作者:
Jouhanneau JS;Kremkow J;Poulet JFA
A defining feature of cortical layer 2/3 excitatory neurons is their sparse activity, often firing in singlets of action potentials. Local inhibitory neurons are thought to play a major role in regulating sparseness, but which cell types are recruited by single excitatory synaptic inputs is unknown. Using multiple, targeted, in vivo whole-cell recordings, we show that single uEPSPs have little effect on the firing rates of excitatory neurons and somatostatin-expressing GABA-ergic inhibitory neurons but evoke precisely timed action potentials in parvalbumin-expressing inhibitory neurons. Despite a uEPSP decay time of 7.8 ms, the evoked action potentials were almost completely restricted to the uEPSP rising phase (~0.5 ms). Evoked parvalbumin-expressing neuron action potentials go on to inhibit the local excitatory network, thus providing a pathway for single spike evoked disynaptic inhibition which may enforce sparse and precisely timed cortical signaling. In superficial layers of the cortex, excitatory neurons often fire single action potentials. Here, using multiple whole-cell recordings in vivo, the authors show that single excitatory synaptic events can drive GABA-ergic parvalbumin neurons to fire, triggering inhibition of other pyramidal neurons.
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影响因子:
16.2
作者:
Atallah BV;Bruns W;Carandini M;Scanziani M
通讯作者:
Scanziani M
影响因子:
16.2
作者:
Fino E;Yuste R
通讯作者:
Yuste R
影响因子:
64.8
作者:
通讯作者:
--
影响因子:
25
作者:
Hofer SB;Ko H;Pichler B;Vogelstein J;Ros H;Zeng H;Lein E;Lesica NA;Mrsic-Flogel TD
通讯作者:
Mrsic-Flogel TD
影响因子:
2.5
作者:
Fanselow, Erika E.;Connors, Barry W.
通讯作者:
Connors, Barry W.