Temporal studies with flashed gratings: Inferences about human transient and sustained channels

Breitmeyer, Bruno G.; Ganz, Leo

doi:10.1016/0042-6989(77)90130-4

Cited by 179 publications

(94 citation statements)

References 18 publications

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“…The older observers have a slower response pattern, suggesting a loss of some of the transient channels. Our results are thus consistent with a transient/sustained model of visual function (Breitmeyer & Ganz, 1976, 1977Legge, 1978). However, other explanations are possible.…”

Section: Discussionsupporting

confidence: 81%

Age-dependent magnitude and time course of early light adaptation

Sturr

Kelly

Kobus

et al. 1982

Perception & Psychophysics

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Section: Discussionsupporting

confidence: 81%

Age-dependent magnitude and time course of early light adaptation

Sturr

Kelly

Kobus

et al. 1982

Perception & Psychophysics

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“…This result was consistent with results showing that reaction time increases with increasing spatial frequency (Breitmeyer, 1975;Vassilev & Mitov, 1976), and that critical duration (on-time/luminance reciprocity at threshold) likewise increases with increasing spatial frequency (Breitmeyer & Ganz, 1977). The above results appear to indicate that the mechanisms that encode the higher spatial frequencies respond more slowly and integrate stimulus energy over a longer time period.…”

supporting

confidence: 81%

The effects of bar width and spatial frequency-specific adaptation on visual persistence

Meyer

Maguire

1979

Bull. Psychon. Soc.

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“…Fourth, the Experiment 3 data yielded evidence for temporal inhibition in stimuli that did not contain abrupt onsets, suggesting that the transient-on-sustained inhibition proposed by Breitmeyer and Ganz (1977) cannot be the sole mediator oftemporal inhibition. In addition, transienton-sustained inhibition cannot explain the facilitatory processes, since the transient inhibition appears to affect both on-and off-center sustained neurons in the cat (Breitmeyer, 1984) and is thus indifferent to contrast polarity.…”

Section: Discussionmentioning

confidence: 99%

Temporal inhibition in character identification

Busey

1998

Perception & Psychophysics

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Modelsof information processing tasks such as character identification often do not consider the nature of the initial sensory representation from which task-relevant information is extracted. An important component of this representation is temporal inhibition, in which the response to a stimulus may inhibit, or in some cases facilitate, processing of subsequent stimuli. Three experiments demonstrate the existence of temporal inhibitory processes in information processing tasks such as character identification and digit recall. An existing information processing model is extended to account for these effects, based in part on models from the detection literature. These experiments also discriminate between candidate neural mechanisms of the temporal inhibition. Implications for the transient deficit theory of dyslexia are discussed.Despite the fact that we see the world as a continuous stream of visual stimulation, the input to the eyes consists of discrete quantal events. No two photons arrive at exactly the same time, anda visual system that reported the locations of arriving photons with infinite temporal fidelity would simply report a flurry of pinpoints, each representing one photon capture. In order to provide a coherent representation ofa scene, the visual system must integrate information over some interval to temporally group photons coming from the same object. To quantify the notion of an integration interval, the response to a stimulus may be characterized as a temporal waveform that represents the result of temporally grouping the arriving photons to form some response that varies over time. Upon stimulus onset, this response may rise to some level and then decay sometime after stimulus offset. This response is termed the initial sensory response and is assumed to represent the output of neural mechanisms located early on in the visual stream (e.g., the retina and the primary visual cortex). It has long been known that the response to a stimulus outlasts its offset (see Coltheart, 1980, for an excellent review), and the characteristics of this initial sensory response reflect this fact. All subsequent visual processing is based on this initial representation, and thus the first step in characterizing the mechanisms that underlie object or character identification must address the nature of this initial sensory representation.The nature of this sensory response function has previously been shown to be important for models of detection (Sperling & Sondhi, 1968;Watson, 1986), intensityduration tradeoffs in information processing tasks (Loftus & Ruthruff, 1994), metacontrast masking (Breitmeyer, This research was funded in part by an NIMH predoctoral grant to T.A.B. and NINH Grant MH4l637 to Geoffrey R. Loftus. Portions of this research were in partial fulfillment of a doctoral dissertation at the University of Washington. Correspondence should be addressed to T. A. Busey, Department of Psychology, Indiana University, Bloomington, IN 47405 (e-mail: busey@indiana.edu). & Irwin, 1998), synchrony judgment...

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Temporal studies with flashed gratings: Inferences about human transient and sustained channels

Cited by 179 publications

References 18 publications

Age-dependent magnitude and time course of early light adaptation

Age-dependent magnitude and time course of early light adaptation

The effects of bar width and spatial frequency-specific adaptation on visual persistence

Temporal inhibition in character identification

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