Marathon adaptation to spatial contrast: Saturation in sight
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Cited by (54)
Myopes experience greater contrast adaptation during reading
2016, Vision ResearchCitation Excerpt :Ohlendorf and Schaeffel (2009) reported that after 10 min adaptation, contrast adaptation was maintained for two minutes and reached baseline after five minutes. It is well established that recovery time increases with inspection time (Georgeson & Georgeson, 1987; Magnussen & Greenlee, 1985; Rose & Evans, 1983) however, in our pilot, contrast sensitivity measurement took approximately six minutes. Given Ohlendorf and Schaeffel’s (2009) explanation of a 5:1 inspection to measurement time ratio, this should have been sufficient to measure a contrast adaptation effect, yet no effect was found.
Blur adaptation: Contrast sensitivity changes and stimulus extent
2015, Vision ResearchFour days of visual contrast deprivation reveals limits of neuronal adaptation
2014, Current BiologyCitation Excerpt :In addition, some costs of adaptation arise only when the stimulus changes (for example, the tilt aftereffect is absent for test patterns at the same orientation as the adapter). Hence, adaptation to a uniform stimulus, such as a grating, may be less costly, so it would be predicted to show less decline after long adapting durations [8]. The slow process observed here likely depends on the same neural mechanisms that underlie observed effects in the few other multiday adaptation reports in the literature [11, 34–37].
The temporal course of recovery from brief (sub-second) adaptations to spatial contrast
2012, Vision ResearchCitation Excerpt :Moreover, different adapter durations did not produce different desensitization in the first few milliseconds (from 10 to 50 ms) after the offset of the adapting stimulus. It is possible that Foley and Boynton achieved this result because they measured the contrast thresholds immediately or very shortly after the offset of the adapting stimulus (Foley & Boynton, 1993; Georgeson & Georgeson, 1987), whereas other studies (e.g., Greenlee et al., 1991; Magnussen & Greenlee, 1985; Rose & Evans, 1983) measured the contrast thresholds several milliseconds after the adapting offset (e.g., 300 ms after the adapting offset in the case of Greenlee et al., 1991), thus showing a different effect of adapting duration on initial threshold elevation as well as showing different recovery functions. As suggested by Foley and Boynton (1993), power functions can hardly describe the recovery function for very short inter-stimulus intervals (ISIs), since these functions should imply that thresholds would tend towards infinity immediately after the adaptation period.
The spatial characteristics of plaid-form-selective mechanisms
2010, Vision ResearchNeural timescales or lack thereof
2010, Progress in NeurobiologyCitation Excerpt :Timescale-free functions, and power law functions in particular, are now accepted as appropriate mathematical forms to describe the time course of human performance. A partial list of behaviors that show timescale-free courses include as diverse processes as skill acquisition (Anderson, 1982; Logan, 1988; Newell et al., 2001), somatosensory stimulus detection (Monto et al., 2008), sensorimotor coordination and time estimation (Chen et al., 1997; Gilden, 2001), adaptation to sensory percepts (Rose and Lowe, 1982; Magnussen and Greenlee, 1985; Greenlee and Magnussen, 1987) and recall of autobiographical items (Rubin, 2002). Thus, there seems to be a consensus amongst researchers that human performance obeys a timescale-free (mostly power) law.
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Present address: Institute of Psychology, University of Oslo, Box 1094, Blindern, N-0317 Oslo 3, Norway.