Electroencephalograph Correlates of Threshold Regulation

Dixon, N. F.; Lear, Terence

doi:10.1038/198870a0

Cited by 26 publications

(5 citation statements)

References 8 publications

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“…Dixon & Haider, 1961). During subliminal presentation of meaningful visual stimuli pre-awareness changes in the EEG have been reported (Dixon and Lear, 1963). We assume that the perceptual defence processes are operative in the DMT as well.…”

Section: Discussionmentioning

confidence: 79%

Tachistoscopic and questionnaire methods for the measurement of psychological defences

Olff

Godaert

Brosschot

et al. 1990

Scandinavian J Psychology

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Only few attempts have been made to compare different methods aiming at quantifying defensive strategies. In this study the tachistoscopic Defence Mechanism Test (Kragh, 1960b and 1985) is compared to paper-and-pencil tests of defence. There were virtually no correlations between the DMT and the other measures of defence. This may indicate that the concept of defence is a highly complex one. It is suggested that the Defence Mechanism Test may be measuring primary defence while defence questionnaires may be assessing more secondary forms of defence. The two questionnaires used for assessing defence correlated significantly, while a scale for social desirability showed no correlation with DMT or the two defence questionnaires.

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Section: Discussionmentioning

confidence: 79%

Tachistoscopic and questionnaire methods for the measurement of psychological defences

Olff

Godaert

Brosschot

et al. 1990

Scandinavian J Psychology

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“…So far as red light is concerned the model is either wrong or incomplete. I n view of the considerable evidence for a relation between cortical activation and excitability (Jasper, 1949;Murphy & Gellhorn, 1945;Dixon & Lear, 1963) to what then can these results be attributed?…”

Section: Discussionmentioning

confidence: 99%

Eeg Correlates of Threshold Regulation as a Function of Stimulus Wavelength: A Comparison Between Normal Subjects and Psychiatric Patients

Dixon

1966

British J of Psychology

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Results of a previous study (Dixon & Lear, 1963, 1964) suggested the perceptual defence effect may be attributable to changes in pre‐awareness levels of cortical activation. The present study looks into this apparent relation between threshold and activation by making use of the fact that the direction of threshold change, under conditions of sympathetic activity, appears to depend upon the wavelength of the stimulus test light. The results, using monochromatic light, suggest that the relation between threshold and activation, in normals and patients, may be less simple than previously supposed.

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“…The relationship of alpha to learning in SAI may well depend on the subject's prior or ongoing state. Thus, in wake conditions, increases or decreases of alpha correlated, respectively, with initial low-or high-awareness thresholds for recognition of emotionally significant words (Dixon & Lear, 1963). The presence of some alpha synchronization has been found essential to verbal learning (Tani & Yoshii, 1973).…”

Section: Eec Controls?mentioning

confidence: 94%

Sleep-assisted instruction.

Aarons¹

1976

Psychological Bulletin

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The question of learning from materials presented during sleep has been answered positively by Soviet studies and negatively by Western studies. However, procedural differences among studies have been confounded with the absence of an established criterion for sleep. The present paper reviews 11 studies in sleep learning for the potential practical value of sleep-assisted instruction (SAI). A strategy of optimizing compatibility between learning and sleep variables to support SAI is proposed within the context of both wake and sleep research on attention, perception, and memory. Age, sex, health, wake learning capacity, and suggestibility are important moderating variables in SAI. The individual's motivation and set, meaningful-relevant learning material, activation of low-voltage EEG sleep patterns and coordinated wake learning with extended training are tentatively deduced as necessary conditions in applied SAI. (111/2 p ref)

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Electroencephalograph Correlates of Threshold Regulation

Cited by 26 publications

References 8 publications

Tachistoscopic and questionnaire methods for the measurement of psychological defences

Tachistoscopic and questionnaire methods for the measurement of psychological defences

Eeg Correlates of Threshold Regulation as a Function of Stimulus Wavelength: A Comparison Between Normal Subjects and Psychiatric Patients

Sleep-assisted instruction.

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