ht_synapse – Synapse with depression after Hill & Tononi (2005)¶

Description¶

This synapse implements the depression model described in [1, p 1678].

Synaptic dynamics are given by

\[\begin{split}P'(t) = ( 1 - P ) / \tau_P \\ P(T+) = (1 - \delta_P) P(T-) \text{ for T : time of a spike } \\ P(t=0) = 1\end{split}\]

\(w(t) = w_{max} * P(t)\) is the resulting synaptic weight

For implementation details see: HillTononi_model

The following parameters can be set in the status dictionary:

tau_P	ms	Synaptic vesicle pool recovery time constant
delta_P	real	Fractional change in vesicle pool on incoming spikes (unitless)
P	real	Current size of the vesicle pool [unitless, 0 <= P <= 1]

1: Hill S, Tononi G (2005). Modeling sleep and wakefulness in the thalamocortical system. Journal of Neurophysiology. 93:1671-1698. DOI: https://doi.org/10.1152/jn.00915.2004

SpikeEvent