Spontaneous Fluctuations of Electrical Skin Conductance and the Actual Clinical State in Schizophrenics

Olbrich, Robert; Mussgay, Lutz

doi:10.1159/000284474

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…No directional hypotheses were made regarding the Thought Disturbance and the Anxiety/Depression factors because of the lack of clear rationale and prior results. Moreover, given the positive relationships between SCORs and tonic electrodermal activity and the previous findings of Olbrich and Mussgay (1987), the same predictions made for SCORs also were made for nonspecific SCRs.…”

supporting

confidence: 69%

“…Gruzelier (1976) obtained somewhat similar results based on ward nurses' ratings, with the SCOR responders rated as more manic, anxious, assaultive, and attention-demanding. Olbrich and Mussgay (1987) examined the relationships between BPRS symptoms and the frequency of nonspecific SCRs, which generally are positively correlated with SCORs, and found a significant positive correlation with the BPRS factor Activation. Taken as a whole, the pattern of results across studies suggests the existence of a continuum of behavioral/emotional intensity, with the SCOR responders on the high end of the continuum and SCOR nonresponders on the low end.…”

mentioning

confidence: 99%

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Concurrent and predictive electrodermal correlates of symptomatology in recent-onset schizophrenic patients.

Dawson¹,

Nuechterlein²,

Schell³

et al. 1992

Journal of Abnormal Psychology

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Electrodermal activity and symptomatology were interrelated in a group of 56 male and 13 female recent-onset schizophrenic patients. Electrodermal activity was indexed by the frequency of nonspecific skin conductances responses and the number of trials to habituation of the skin conductance orienting response. Symptomatology was assessed by the Brief Psychiatric Rating Scale (BPRS) on two separate test occasions. The first test occasion was during the inpatient period when psychotic symptoms were prevalent and medications were variable. The second test occasion was several months later during an outpatient period when symptoms were stabilized and medications held constant. Electrodermal activity was positively and significantly related to a number of symptoms in male patients, most reliably the BPRS factors Activation and Hostility/Suspiciousness. These relationships were most consistent during the outpatient period. Of particular theoretical interest, greater electrodermal activity during the inpatient period was associated with greater outpatient psychopathology. The results suggest that heightened inpatient electrodermal activity is predictive of poor short-term symptomatic recovery in recent-onset, acute, male schizophrenic patients.

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confidence: 69%

mentioning

confidence: 99%

Concurrent and predictive electrodermal correlates of symptomatology in recent-onset schizophrenic patients.

Dawson¹,

Nuechterlein²,

Schell³

et al. 1992

Journal of Abnormal Psychology

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“…In line with other reports [Olbrich and Mussgay, 1987] there appeared to be no effect of medication dosage on electrodermal activity.…”

Section: Discussionsupporting

confidence: 92%

Electrodermal Activity as a Predictor of Schizophrenic Relapse

Tarrier

Barrowclough

1989

Psychopathology

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Electrodermal activity and self-report of affect were recorded from schizophrenic patients with their relative absent and present, at index admission and on two subsequent occasions after discharge. It was hypothesised that it would be possible to discriminate at index admission patients who relapsed in the subsequent 2-year period from those who remained well, and that these differences would be stable over time and independent of illness episode. The former hypothesis was supported in part, but not the second. The results did not support electrodermal hyperactivity as a stable, enduring vulnerability marker.

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“…He found that the number of trials to habituation in a series of 12 tones (1 kHz, 78 dB) significantly increased in schizophrenics from a state of remission to a state of relapse. Olbrich (1990) could not find statistically significant differences in various EDA parameters, including tonic measures, initial SC-OR amp., and trials to habituation, 243 comparing data from 11 242 In a pilot study with few participants, Hazlett, Dawson, Buchsbaum, and Nuechterlein (1993) found that EDA nonresponders had significantly lower metabolic rates in medial frontal areas, in the hippocampus, and in the amygdala, i.e., in areas that are suggested being involved in generating EDA (Sect. 1.3.4.1).…”

Section: Electrodermal Nonresponding In Schizophrenicsmentioning

confidence: 65%

“…1.3.4.1). 243 Recorded in a series of 15 tones (1 kHz, 70 dB) with standard methodology, using a time window of 0.5-4 s after stimulus onset (Olbrich & Mussgay, 1987). schizophrenics in an acute nonmedicated state and after remission, also without medication.…”

Section: Electrodermal Nonresponding In Schizophrenicsmentioning

confidence: 99%

Electrodermal Activity

Boucsein

2012

1,564

1,589

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except for brief excerpts in connection with reviews or scholarly analysis. Use in connection with any form of information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed is forbidden. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights.Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com) Foreword to the Second EditionAs noted by David Lykken in the foreword to the first edition of this book, electrodermal activity was observed for the first time in Germany. A quartercentury later the scientific study of psychology also originated in Germany. Over time, however, the focus of psychological research, including the then new field of psychophysiology, shifted to the United States and Great Britain. This trend to the dominance of the United States and Great Britain was prolonged by the devastation of World War II and its aftermath in Germany (and elsewhere in continental Europe). Slowly at first and then more rapidly, German psychological science, including psychophysiology, recovered. For several decades German psychophysiologists have been a major force in psychophysiology. With the publication of the first English edition of this book in 1992, it became essential for electrodermal researchers worldwide again to learn from our German colleagues.When I came into psychophysiology in the mid-1960s, electrodermal activity was the most common system studied. Because of its popularity, a large literature had emerged on the physiological mechanisms producing these changes in the electrical properties of the skin and on the best methodology for recording them. Major reviews and/or chapters had been published or soon were to be published by Peter Venables and Irene Martin, Robert Edelberg, and David Lykken. Later reviews and articles were published by Venables and Margaret Christie, and by me. A chapter in 1990 by Michael Dawson, Anne Schell, and Diane Filion was especially noteworthy for its coverage of the psychological applications of electrodermal measures.Note that all these publications were journal articles and chapters and that most of them focused almost entirely on mechanisms and methodology. The publication of this book, first in German and then in English, provided the first book on electrodermal activity, and one that extensively covers psychological applications as well as mechanisms and methodology. Again to quote David Lykken back in 1992, "The return of German scholarship to what I shall loftily call the high table of psychophysiology is exemplified by this fine book, the most comprehensive treatise on the electrodermal system to appear in any language . . ." I completely agree with v that evaluation. Professor Boucsein's outstanding scholarship has produced a book of such breadth of coverage ...

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Spontaneous Fluctuations of Electrical Skin Conductance and the Actual Clinical State in Schizophrenics

Cited by 8 publications

References 11 publications

Concurrent and predictive electrodermal correlates of symptomatology in recent-onset schizophrenic patients.

Concurrent and predictive electrodermal correlates of symptomatology in recent-onset schizophrenic patients.

Electrodermal Activity as a Predictor of Schizophrenic Relapse

Electrodermal Activity

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