# Online Seminar: Statistical mechanics foundation of Weber-Fechner laws

#### Online Seminar: Statistical mechanics foundation of Weber-Fechner laws

- Event time: 11:30am until 12:30pm
- Event date: 21st October 2020
- Speaker: Christian Maes (University of Leuven)
- Location: Online - see email.

### Event details

Even though the phenomenological relations between perception and stimulus have been firmly established, a theoretical argument for Weber's and Fechner's law in terms of relevant models or from statistical physics is largely missing. We present such a discussion in terms of response theory for nonequilibrium systems, where the induced displacement or current, which stands for the perceived stimulus, crucially depends on the change in time-symmetric reactivities. Stationary nonequilibria may indeed generate extra currents by changing the dynamical activity. The argument finishes by understanding how the extra dynamical activity logarithmically encodes the actual stimulus.

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