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. Author manuscript; available in PMC: 2014 Apr 2.
Published in final edited form as: J Comput Neurosci. 2009 Aug 27;28(1):19–27. doi: 10.1007/s10827-009-0181-3

Fig. 2.

Fig. 2

Estimation of STRF change. (a) (Left panel) Spectro-temporal receptive field of a single-unit is estimated during behaviorally passive state. (Middle panel) The STRF is then estimated when the animal performs one of the auditory tasks (tone-detection in this case). (Right panel) STRF change (STRFdiff) is defined as the difference between passive and behavioral STRFs and indicates the effect of the behavioral state on the spectro-temporal tuning of the neuron. All STRFs are measured with the same stimuli, and hence changes reflect only the behavioral state of the animals. (b) (Left) A schematic of a neuron with STRF h(t, f). It transforms the two sounds S1 and S2 to the response space r1 and r2. (Right) An optimal change in the STRF of the neuron (hopt(t,f)) increases the separation between the responses r1 and r2 to the stimuli, thereby facilitating their discrimination