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Phys. Rev. Lett. 103, 024101 (2009) [4 pages]

Weighted Spike-Triggered Average of a Fluctuating Stimulus Yielding the Phase Response Curve

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Kaiichiro Ota1,*, Masaki Nomura2, and Toshio Aoyagi1
1Graduate School of Informatics, Kyoto University, Kyoto 606-8501, Japan
2Graduate School of Letters, Kyoto University, Kyoto 606-8501, Japan

Received 10 November 2008; published 8 July 2009

We demonstrate that the phase response curve (PRC) can be reconstructed using a weighted spike-triggered average of an injected fluctuating input. The key idea is to choose the weight to be proportional to the magnitude of the fluctuation of the oscillatory period. Particularly, when a neuron exhibits random switching behavior between two bursting modes, two corresponding PRCs can be simultaneously reconstructed, even from the data of a single trial. This method offers an efficient alternative to the experimental investigation of oscillatory systems, without the need for detailed modeling.

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© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.024101
DOI:
10.1103/PhysRevLett.103.024101
PACS:
05.45.Xt, 87.19.lm

*kaiichiro@acs.i.kyoto-u.ac.jp