Psychophysiology

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The pupil as a measure of emotional arousal and autonomic activation
Psychophysiology - Tập 45 Số 4 - Trang 602-607 - 2008
Margaret M. Bradley, Laura Miccoli, Miguel A. Escrig, Peter J. Lang
AbstractPupil diameter was monitored during picture viewing to assess effects of hedonic valence and emotional arousal on pupillary responses. Autonomic activity (heart rate and skin conductance) was concurrently measured to determine whether pupillary changes are mediated by parasympathetic or sympathetic activation. Following an initial light reflex, pupillary ch...... hiện toàn bộ
Significance Testing of Difference Potentials
Psychophysiology - Tập 28 Số 2 - Trang 240-244 - 1991
Donald Guthrie, Jennifer S. Buchwald
ABSTRACTThis note provides a statistical‐graphical method for the evaluation of the statistical significance of difference potentials from a group of subjects, and for the comparison of difference potentials between two groups. A table of the lengths of statistically significant intervals for various sampling interval lengths, numbers of subjects, and autocorrelati...
The Continuing Problem of False Positives in Repeated Measures ANOVA in Psychophysiology: A Multivariate Solution
Psychophysiology - Tập 24 Số 4 - Trang 479-486 - 1987
Michael W. Vasey, Julian F. Thayer
ABSTRACTViolation of the validity assumptions of repeated measures analysis of variance continues to be a problem in psychophysiology. Such violation results in positive bias for those tests involving the repeated measures factor(s), Recently it has been shown that the tests of simple interactions and multiple comparisons are even more vulnerable to bias (Boik. 198...... hiện toàn bộ
Aging and the Simon task
Psychophysiology - Tập 39 Số 1 - Trang 100-110 - 2002
Rob H. J. van der Lubbe, Rolf Verleger
A visual Simon task was used to study the influence of aging on visuospatial attention and inhibitory control processes. Responses were much slower for elderly than for young participants. The delay in trials in which stimulus and response side did not correspond as compared to when they did correspond (the Simon effect) was larger for older people, even after correcting for general slowin...... hiện toàn bộ
Influence of caffeine on selective attention in well‐rested and fatigued subjects
Psychophysiology - Tập 31 Số 6 - Trang 525-534 - 1994
Monicque M. Lorist, J. Snel, Albert Kok, G. Mulder
AbstractEffects of caffeine were studied in a visual focused selective search task in well‐rested and fatigued subjects. A dose of 200 + 50 mg caffeine or placebo, dissolved in decaffeinated coffee, was administered in a double‐blind and deceptive fashion. The task was to detect a target letter on one diagonal of a visual display designated as relevant and ignore s...... hiện toàn bộ
Suppression and enhancement of emotional responses to unpleasant pictures
Psychophysiology - Tập 37 Số 4 - Trang 515-522 - 2000
Daren C. Jackson, Jessica R. Malmstadt, Christine L. Larson, Richard J. Davidson
Despite the prominence of emotional dysfunction in psychopathology, relatively few experiments have explicitly studied emotion regulation in adults. The present study examined one type of emotion regulation: voluntary regulation of short‐term emotional responses to unpleasant visual stimuli. In a sample of 48 college students, both eyeblink startle magnitude and corrugator activity were se...... hiện toàn bộ
The Startle Eyeblink Response to Low Intensity Acoustic Stimuli
Psychophysiology - Tập 28 Số 3 - Trang 296-306 - 1991
Terry D. Blumenthal, Christopher T. Goode
ABSTRACTFour experiments were conducted to investigate the acoustic startle response to stimuli of low intensities. Eyeblink responses (integrated EMG from orbicularis oculi) were measured from male and female college students. Experiment 1 compared tone and noise stimuli varying in intensity (50 and 60 dB(A) SPL), with noise stimuli producing greater response ampl...... hiện toàn bộ
Amplitude and Habituation of the Orienting Reflex as a Function of Stimulus Intensity
Psychophysiology - Tập 11 Số 6 - Trang 647-659 - 1974
Jan C. Jackson
ABSTRACTTwo within‐S experiments involving 20 Ss each and one between‐S experiment employing 100 Ss were performed to examine effects of stimulus intensity on orienting response amplitude and habituation. Five intensities of a 1000 Hz tone were presented, ran...... hiện toàn bộ
Do ERP components triggered during attentional orienting represent supramodal attentional control?
Psychophysiology - Tập 44 Số 6 - Trang 987-990 - 2007
Ellen Seiss, Elena Gherri, Alison F. Eardley, Martin Eimer
AbstractLateralized ERP components triggered during cued shifts of spatial attention (anterior directing attention negativity [ADAN], late directing attention positivity [LDAP]) have been observed during visual, auditory, and tactile attention tasks, suggesting that these components reflect supramodal attentional control processes. This interpretation has recently ...... hiện toàn bộ
Electrogastrography for psychophysiological research: Practical considerations, analysis pipeline, and normative data in a large sample
Psychophysiology - Tập 57 Số 9 - 2020
Nicolai Wolpert, Ignacio Rebollo, Catherine Tallon‐Baudry
AbstractElectrogastrography (EGG) is the noninvasive electrophysiological technique used to record gastric electrical activity by means of cutaneous electrodes placed on the abdomen. EGG has been so far mostly used in clinical studies in gastroenterology, but it represents an attractive method to study brain‐viscera interactions in psychophysiology. Compared to the...... hiện toàn bộ
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