RIKEN's New Research Center for Brain Science: 脳神経科学研究センター(理研CBS)ウェブサイト

RIKEN BRAIN SCIENCE INSTITUTE (理研BSI)

Events

[Forum]

“ Forum "What is the integration time constant of neurons?" ”

BSI Private Event

Add this Event to My Calendar

iCal Google
Other
Windows Live Calendar Yahoo! Calendar Microsoft Office Outlook Calendar
Email this event information

Print this Event

Date

June 22, 2010 14:00 - 15:30

Abstract

Abstract Because the membrane potential relaxes to equilibrium after stimulation, two synchronous input spikes are more likely to make a neuron fire than two widely separated spikes. The characteristic time that separates these two behaviors is called the integration time constant. Classically, one relates it to the membrane time constant or to the half-width of postsynaptic potentials, implicitly assuming that effects on the membrane potential directly transfer to spiking probabilities. However, the threshold introduces nonlinearities in the input-output relationship. I will show that the integration time constant of neurons is in fact shorter than expected and depends on the statistics of background activity, the synaptic weights and threshold properties. It implies that neurons are very sensitive to fine correlations in their inputs.

More Detail

Language
English
Admission
BSI Private Event
Host
Tomoki Fukai