Biomedical subjects

Ernst Richard Petzold

Publications and source records attributed to Ernst Richard Petzold.

3 recordsLinked to original sources

PubMed2007

[From the Gestaltkreis to synergetics: irreversible structural and dynamic functional couplings].

With the present contribution, we attempt to merge the work of several generations of physiology and psychosomatics. The common denominator in an array of observation levels appear in these works as the relationship between irreversible-structural and dynamic-functional couplings and synchronisations. In this context, studies on the level of the common brainstem system appear to be the base for a neuro-bio-psychic self-organisation. Studies culled from psychosomatics of Heidelberg, notably the Gestaltkreis theory, the Methodenkreis (methodological loop), the Bipersonalität (bipersonality), and the Simultandiagnostik (simultaneous diagnostics) exhibit the origin of complex functions which have been analyzed and quantified employing nonlinear methods developed in synergetics. Relevance of coupling and synchronisation, desynchronisation, resp., is, however, not limited to the scope of psychosomatic medicine. Fixed or functional, they are essential constituents to neurophysiological processes, such as association, dissociation, resp. This equally holds for evidence based medicine which is to benefit from any dynamic process analysis.

History, 20th Century↗

PubMed2004

Cardiovascular rhythms in the 0.15-Hz band: common origin of identical phenomena in man and dog in the reticular formation of the brain stem?

Selected examples from experiments in humans and dogs with time series of reticular neurons, respiration, arterial blood pressure and cutaneous forehead blood content fluctuations were analysed using multiscaled time-frequency distribution, post-event-scan and pointwise transinformation. We found in both experiments a "0.15-Hz rhythm" exhibiting periods of spindle waves (increasing and decreasing amplitudes), phase synchronized with respiration at 1:2 and 1:1 integer number ratios. At times of wave-epochs and n:m phase synchronization, the 0.15-Hz rhythm appeared in heart rate and arterial blood pressure. As phase synchronization of the 0.15-Hz rhythm with respiration was established at a 1:1 integer number ratio, all cardiovascular-respiratory oscillations were synchronized at 0.15 Hz. Analysis of a canine experiment supplied evidence that the emergence of the 0.15-Hz rhythm and n:m phase synchronization appears to result from a decline in the level of the general activity of the organism associated with a decline in the level of activity of reticular neurons in the lower brainstem network. These findings corroborate the notion of the 0.15-Hz rhythm as a marker of the "trophotropic mode of operation" first introduced by W.R. Hess.

Animals↗

PubMed1999

[The Aachen liaison model]

The encounter between physician and patient is impregnated by contemporary theories of disease. From the point of view of psychotherapeutic medicine, the physician-patient-relationship fuses normative and relationship-oriented thinking. The disease as the object of treatment is being supplemented by the care for the patient as a subject. The participating observation and the respective reflection are professional tools of the medical carer. The realisation of this point of view in clinical practice is exemplified using the Aachen Psychosomatic model of Liaison. The importance of this model for interdisciplinary cooperation is being discussed.

Journal Article↗