The potential roles of saturating and supersaturating contrast-response 
functions in conjunction detection: Reply to Peirce

May, KA; Zhaoping, L

doi:10.1167/13.4.22

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The potential roles of saturating and supersaturating contrast-response functions in conjunction detection: Reply to Peirce

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May, K., & Zhaoping, L. (2013). The potential roles of saturating and supersaturating contrast-response functions in conjunction detection: Reply to Peirce. Journal of Vision, 13(4): 22, pp. 1-4. doi:10.1167/13.4.22.

Cite as: https://hdl.handle.net/21.11116/0000-0002-C645-1

Abstract

Peirce (2007) proposed a two-stage conjunction detection model in which the outputs of first-stage neurons selective for the conjunction components were summed to give the conjunction-detector output. He argued that a saturating (monotonic) or supersaturating (nonmonotonic) nonlinearity on the outputs of the first-stage neurons made this detector more selective for conjunctions by increasing the ratio of conjunction response to component response at the output stage, i.e., the response of the conjunction detector to a conjunction divided by its response to a single component presented in isolation.