Perceptual Learning in Auditory Temporal Discrimination: Cross-Modal Transfer to the Visual Modality?

Ulrich, Rolf; Lapid, Einat; Rammsayer, Thomas

doi:10.1037/e527312012-342

Cited by 1 publication

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“…where b is the slope of the logistic function 48 . The smaller the JND, the higher the discrimination sensitivity of the observer.…”

Section: Discussionmentioning

confidence: 99%

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How to minimize time distortions

Sierra¹,

Poeppel²,

Tavano³

2020

Preprint

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The Distinct Timing Hypothesis (DTH) proposes that two different neuronal computations underlie temporal information processing below and above one second. We tested DTH predictions by varying the interval between two visual events (S and C) from 400 to 2000 ms. To verify whether attentive encoding processes play a role, we deployed three durations for S (120, 160, and 200 ms), which map to attentive sampling frequencies of 8.33, 6.25, and 5 Hz. The one-second divide does not modulate sensory precision in duration discrimination, while it determines whether participants will dilate/compress perceived S duration. However, all distortion effects disappear when S is extended to 200 ms, suggesting that a sampling rate of 5 Hz optimizes subjective decisions. Since the effects of the one-second divide on perceived duration are not hardwired, a single computational mechanism may underlie both sub-second and supra-second temporal scales for behavior, in flexible interaction with attentive encoding processes.

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“…where b is the slope of the logistic function 48 . The smaller the JND, the higher the discrimination sensitivity of the observer.…”

Section: Discussionmentioning

confidence: 99%

“…The smaller the JND, the higher the discrimination sensitivity of the observer. In order to compare the JND between experiments we obtained the Weber Fraction (WF) by dividing the DL between the Standard stimulus (WF = DL/S) 25,48 . We also applied a 100-scale transformation to the WF for a better depiction of the results.…”

Section: Discussionmentioning

confidence: 99%