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Sang Wook Hong, Min-Suk Kang; Temporal dynamics of brightness induction from motion in context. Journal of Vision 2014;14(10):76. doi: 10.1167/14.10.76.
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© ARVO (1962-2015); The Authors (2016-present)
Recently we show that motion signal from neighboring objects alters brightness of both the moving and the stationary objects, and consequently the stationary objects appear different from the moving ones although both have identical physical luminance (Hong & Kang, 2013). In the current study, we investigated the temporal dynamics of this novel brightness induction. When two stationary dots were presented initially then one of them was set in motion, brightness of both stationary and moving dots changed almost instantaneously. Concerning that the abrupt onset of the stimulus motion might be responsible for this instantaneous change, we abruptly introduced the stationary dot also. When a stationary dot was introduced while a dot was moving, the appearance of the newly appeared stationary dot changed slowly over two seconds. Further, when an additional stationary dot was introduced in the display where one stationary and one moving dots were already present, the additional dot underwent slow change in brightness, similar to the previous condition. Lastly, when the moving dot stopped its motion, its brightness as well as the brightness of the stationary dot changed slowly and then they were indistinguishable in about 2 second. We discussed underlying mechanisms mediating this slow changes in brightness associated with stimulus motion.
Meeting abstract presented at VSS 2014
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