(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 6. An example of multisensory enhancement where the unisensory responses are
marginal but the multisensory responses are evident. A and C are
baseline-subtracted spike density function (SDFs) during each stimulus type. B
and D compare the calculated linear sum of the baseline-subtracted unisensory
responses to the actual baseline-subtracted multisensory response. In each
graph, the vertical broken arrow is the time of the minimum object
distance.