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Physiological changes in a reaction time task: Further problems with Sokolov¿s dimension of stimulus ¿significance¿

Journal Article


Abstract


  • Sokolov placed attentional and response requirements in the same dimension of stimulus “significance,” and proposed that these produced similar effects upon the magnitude and habituation rate of the OR. In a previous study, subjects were required to focus attention on stimulus events; here, the same stimuli served as imperative signals in a simple RT task. The effect of this manipulation upon several indices of the OR (GSR, respiration, HR, PPV, CPV, and EEG) failed to support Sokolov’s position. The data obtained were used to further develop a hypothetical structure tentatively offered as a replacement of the unitary OR concept. © 1978, Psychonomic Society, Inc.. All rights reserved.

Publication Date


  • 1978

Citation


  • Barry, R. J. (1978). Physiological changes in a reaction time task: Further problems with Sokolov¿s dimension of stimulus ¿significance¿. Physiological Psychology, 6(4), 438-444. doi:10.3758/BF03326749

Scopus Eid


  • 2-s2.0-0018252233

Start Page


  • 438

End Page


  • 444

Volume


  • 6

Issue


  • 4

Abstract


  • Sokolov placed attentional and response requirements in the same dimension of stimulus “significance,” and proposed that these produced similar effects upon the magnitude and habituation rate of the OR. In a previous study, subjects were required to focus attention on stimulus events; here, the same stimuli served as imperative signals in a simple RT task. The effect of this manipulation upon several indices of the OR (GSR, respiration, HR, PPV, CPV, and EEG) failed to support Sokolov’s position. The data obtained were used to further develop a hypothetical structure tentatively offered as a replacement of the unitary OR concept. © 1978, Psychonomic Society, Inc.. All rights reserved.

Publication Date


  • 1978

Citation


  • Barry, R. J. (1978). Physiological changes in a reaction time task: Further problems with Sokolov¿s dimension of stimulus ¿significance¿. Physiological Psychology, 6(4), 438-444. doi:10.3758/BF03326749

Scopus Eid


  • 2-s2.0-0018252233

Start Page


  • 438

End Page


  • 444

Volume


  • 6

Issue


  • 4