Backward Enhancement?

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Science  07 Jan 1972:
Vol. 175, Issue 4017, pp. 93-95
DOI: 10.1126/science.175.4017.93


Presentation of a masking stimulus enhances, rather than detracts from, detectability of certain multisegment targets. Present theories of backward masking cannot account for this "backward enhancement" effect, which resembles another puzzling phenomenon, previously reported as target recovery or disinhibition. An explanation in terms of interaction between retinal excitatory and inhibitory fields is offered.