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

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.

journal_name

Vision Res

journal_title

Vision research

authors

Hammett ST,Bex PJ

doi

10.1016/0042-6989(96)00009-0

subject

Has Abstract

pub_date

1996-09-01 00:00:00

pages

2729-33

issue

17

eissn

0042-6989

issn

1878-5646

pii

0042-6989(96)00009-0

journal_volume

36

pub_type

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