A Consistent Definition of Phase Resetting Using Hilbert Transform

Figure 2

Spurious phase resetting discontinuities. (a) A phase reference defined by an arbitrary voltage threshold (see the horizontal dashed line) counts strong excitatory responses as new cycles. (b) A too low voltage threshold wrongfully counts the response to a strong inhibition as a new cycle. (c) As a result, in both cases the PRC has spurious discontinuities. (d) Additional discontinuities of the PRC are determined by perturbations that abolish the oscillations.

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(b)

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