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Previous studies have shown that spikes can be generated in the dendrites of CA1 pyramidal neurons. Some have suggested that, in response to synaptic inputs, spikes are initiated near the soma and propagate back into the dendrites, but some recent studies have shown that intense synaptic inputs initiate spikes in the dendrite. Here, we report the optical detection of spike propagation along the apical...
The primary function of neurons is to integrate synaptic inputs and to transmit the results to other cells. Recent studies with somatic whole-cell recordings have shown that separate excitatory inputs to hippocampal or cortical pyramidal neurons are summated non-linearly. In the present study, we examined how postsynaptic potentials (PSPs) are summated along the dendrites employing fast optical voltage...
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