Motion sharpening: evidence for the addition of high spatial frequencies to the effective neural image

Citation:

Hammett ST, Bex PJ. Motion sharpening: evidence for the addition of high spatial frequencies to the effective neural image. Vision Research [Internet]. 1996;36:2729–33.

Abstract:

The perceived blur of drifting sinusoidal gratings was compared to that of static, blurred "square wave" gratings before and after adaptation to a missing fundamental ({MF)} pattern. The results indicate that the perceived blur of a drifting sine grating is inversely related to its drift speed. However, after adaptation to a {MF} pattern, this effect is reduced. The adaptation effect is most profound for low contrast gratings. The results provide tentative evidence for a non-linear stage in motion processing which serves to introduce higher frequencies into the neural image which are not present in the original signal.

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