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Transient motion of visual texture delays saccadic eye movements.

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Transient motion of visual texture delays saccadic eye movements. / Crawford, Trevor J.
In: Acta Psychologica, Vol. 92, No. 3, 08.1996, p. 251-262.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Crawford TJ. Transient motion of visual texture delays saccadic eye movements. Acta Psychologica. 1996 Aug;92(3):251-262. doi: 10.1016/0001-6918(95)00015-1

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Crawford, Trevor J. / Transient motion of visual texture delays saccadic eye movements. In: Acta Psychologica. 1996 ; Vol. 92, No. 3. pp. 251-262.

Bibtex

@article{fa92a48cec1349b4a506e04bf5114b1c,
title = "Transient motion of visual texture delays saccadic eye movements.",
abstract = "Neurophysiological research has established that a transient stimulus, spatially located outside the receptive field of visual cells, can activate some cells and inhibit firing in others. However, the significance of this phenomenon for behavioural responses in man is unclear. This study investigated the effect of a transient peripheral event on the initiation of saccadic eye movements to a luminance increment. In Experiment 1 human saccadic eye movements to targets that varied in luminance were compared on 'shift' trials, in which the saccadic target was timed to coincide with a step displacement of a vertical grating in the background, and on 'no-shift' trials, when the background remained stationary. The results showed a significant delay in mean saccadic latencies on 'shift trials' compared to 'no-shift' trials. Saccadic latencies were reduced in both conditions with increasing target intensity. Measurement of visual sensitivity showed a small non-significant increase in thresholds in the background 'shift' condition. A second experiment manipulated visuo-temporal information by varying both target duration and intensity. This experiment revealed significant effects of target duration and signal intensity on saccadic latency; and a 3-way interaction showing that saccades suffered the greatest delay in the background 'shift' condition at the lowest duration and intensity targets. These results show that the peripheral motion of visual texture delays the programming of saccadic eye movements and there is a particularly marked effect for targets of low signal strength.",
keywords = "Saccadic latency, Target brightness, Shift-effect, Sustained, Transient, Magnocellular, Parvocellular visual channels, Visual thresholds",
author = "Crawford, {Trevor J.}",
year = "1996",
month = aug,
doi = "10.1016/0001-6918(95)00015-1",
language = "English",
volume = "92",
pages = "251--262",
journal = "Acta Psychologica",
issn = "0001-6918",
publisher = "Elsevier",
number = "3",

}

RIS

TY - JOUR

T1 - Transient motion of visual texture delays saccadic eye movements.

AU - Crawford, Trevor J.

PY - 1996/8

Y1 - 1996/8

N2 - Neurophysiological research has established that a transient stimulus, spatially located outside the receptive field of visual cells, can activate some cells and inhibit firing in others. However, the significance of this phenomenon for behavioural responses in man is unclear. This study investigated the effect of a transient peripheral event on the initiation of saccadic eye movements to a luminance increment. In Experiment 1 human saccadic eye movements to targets that varied in luminance were compared on 'shift' trials, in which the saccadic target was timed to coincide with a step displacement of a vertical grating in the background, and on 'no-shift' trials, when the background remained stationary. The results showed a significant delay in mean saccadic latencies on 'shift trials' compared to 'no-shift' trials. Saccadic latencies were reduced in both conditions with increasing target intensity. Measurement of visual sensitivity showed a small non-significant increase in thresholds in the background 'shift' condition. A second experiment manipulated visuo-temporal information by varying both target duration and intensity. This experiment revealed significant effects of target duration and signal intensity on saccadic latency; and a 3-way interaction showing that saccades suffered the greatest delay in the background 'shift' condition at the lowest duration and intensity targets. These results show that the peripheral motion of visual texture delays the programming of saccadic eye movements and there is a particularly marked effect for targets of low signal strength.

AB - Neurophysiological research has established that a transient stimulus, spatially located outside the receptive field of visual cells, can activate some cells and inhibit firing in others. However, the significance of this phenomenon for behavioural responses in man is unclear. This study investigated the effect of a transient peripheral event on the initiation of saccadic eye movements to a luminance increment. In Experiment 1 human saccadic eye movements to targets that varied in luminance were compared on 'shift' trials, in which the saccadic target was timed to coincide with a step displacement of a vertical grating in the background, and on 'no-shift' trials, when the background remained stationary. The results showed a significant delay in mean saccadic latencies on 'shift trials' compared to 'no-shift' trials. Saccadic latencies were reduced in both conditions with increasing target intensity. Measurement of visual sensitivity showed a small non-significant increase in thresholds in the background 'shift' condition. A second experiment manipulated visuo-temporal information by varying both target duration and intensity. This experiment revealed significant effects of target duration and signal intensity on saccadic latency; and a 3-way interaction showing that saccades suffered the greatest delay in the background 'shift' condition at the lowest duration and intensity targets. These results show that the peripheral motion of visual texture delays the programming of saccadic eye movements and there is a particularly marked effect for targets of low signal strength.

KW - Saccadic latency

KW - Target brightness

KW - Shift-effect

KW - Sustained

KW - Transient

KW - Magnocellular

KW - Parvocellular visual channels

KW - Visual thresholds

U2 - 10.1016/0001-6918(95)00015-1

DO - 10.1016/0001-6918(95)00015-1

M3 - Journal article

VL - 92

SP - 251

EP - 262

JO - Acta Psychologica

JF - Acta Psychologica

SN - 0001-6918

IS - 3

ER -