An electromyographic study of depressed patients

Where is emotional feeling felt in the body? An integrative review

Contemporary research on "embodied emotion" emphasizes the role of the body in emotional feeling. The evidence base on interoception, arguably the most prominent strand of embodied emotion research, places emphasis on the cardiac, respiratory and gastrointestinal systems. In turn, interoception has evidence-based links with improved emotion regulation. Despite the focus on separate bodily systems, it is unclear whether particular interoceptive locations play a greater role in emotional feeling and emotion regulation. Further, according to Gross' "process model", the sooner that regulation of an emotion occurs, the better; hence, it is additionally important to identify the first body areas to activate. These issues are investigated in a two-stage integrative review. The first stage was preliminary, giving an overview of the evidence base to highlight the distribution of measured body areas. This indicated that 86% of publications (n = 88) measured cardiac activity, 26% measured the respiratory system, and six percent the gastrointestinal system. Given the emphasis placed on all three systems in interoception theory and research on emotion, this suggests a dearth of comprehensive findings pertaining to feeling locations. The second stage investigated the core issues of where emotional feelings are felt in the body and time-related implications for regulation. This was based on ten texts, which together suggested that the head, throat and chest are the most consistently detected locations across and within numerous emotional contexts. Caution is required, however, since-among other reasons discussed-measurement was not time-restricted in these latter publications, and direct physiological measurement was found in only a minority of cases.

Autonomic activation and endogenous depression

Psychophysiologic parameters were investigated in 10 patients with endogenous depression during the course of electroconvulsive therapy. Changes in the depressive mood were assessed by the patients at regular intervals using a general mood scale. EEG and heart rate response and habituation were recorded before, during, and after E.C.T. Prior to treatment a low variance and responsiveness and striking intra-individual stability were found in the physiologic parameters. At the start of E.C.T. there was a significant increase in the deviation values of heart rate and a significant increase in the occurrence of typical biphasic heart rate responses. The EEG showed increased amplitudes and a slowing of background activity. Treatment-dependent differences were also seen in the habituation of the EEG amplitude response. Regarding improvement in the depressive mood, differences were found between the retarded and the agitated patients. Agitated patients demonstrated a continous gradual decline of their depressive condition, while in retarded patients the general trend toward improvement passed through a period of increased mood lability. The results are interpreted with reference to the activation dependency of heart rate responses.

Research report: Institute of Psychiatry Clinical Psychopharmacology Research Team

In 1960, the National Institute of Mental Health of the U.S.A. provided research support to Professor H. O. Schild of the Department of Pharmacology, University College London (U.C.L.) and to Dr. (now Professor) Michael Shepherd of the Department of Psychiatry, Institute of Psychiatry, University of London, for studies in human psychopharmacology. The research assistants initially employed were Dr. Lorna Wing, Dr. J. D. Montagu, and Dr. Malcolm Lader and work was carried out at U.C.L., the Institute of Psychiatry, and Runwell Hospital, Essex. In 1966, the Medical Research Council assumed responsibility by appointing Dr. Lader to their External Scientific Staff. Other support has come from the Bethlem Research Fund and from the pharmaceutical industry, in particular Roche (U.K.) Ltd. and May and Baker, Ltd. A group of six to eight workers has thus been built up based mainly in the Institute of Psychiatry but with continuing links to U.C.L. At present our team comprises pharmacologists, psychiatrists, psychologists, a physiologist, a chemist, and a mathematician. Several workers from abroad on British Council or Commonwealth Fellowships have been attached to the team at various times, and students for higher degrees such as PhD and MD have been welcomed.

A physiological comparison of 'endogenous' and 'reactive' depression

The classification of depressive illness has long been a source of controversy in British psychiatry. In particular, phenomenological and statistical studies have failed to agree about the existence of a valid distinction between ‘endogenous' and ‘reactive’ depression (Carney, Roth and Garside (2); Eysenck (3); Kendell (7); Maxwell (9)).