Literaturangaben:
Tschacher W, Scheier C, & Hashimoto Y. (1997). Dynamical Analysis of Schizophrenia Courses. Biological Psychiatry, 41, 428-437.
oder auch:
Tschacher W, Scheier C, & Aebi E. (1996). Nichtlinearität und
Chaos in Psychoseverläufen - eine Klassifikation der Dynamik auf
empirischer Basis. Böker W, & Brenner HD, Integrative Therapie
der Schizophrenie, (pp. 48-65). Göttingen: Hogrefe.
Abstract
In order to assess the working hypothesis that schizophrenia may
be viewed as a nonlinear dynamical disease, we examined the long-term
psychoticity dynamics of 14 patients. The data consist of daily
ratings of psychopathology observed for 200 or more consecutive
days in each patient. We implemented nonlinear dynamical analysis
methods with a potential of being applicable even to relatively
short and noisy time series: two different forecasting approaches
combined with surrogate methods that allow statistical testing
in each single case. The resulting classification of dynamics
gives evidence that eight patients show nonlinear evolutions of
symptom courses. Four cases can be modelled linearly, two as random
processes. Thus, a larger proportion of the schizophrenic psychoses
we studied shows nonlinear time courses. To our knowledge this
is the first time that the validity of the concept of dynamical
diseases could be established on statistical grounds in this important
area of psychopathology. The nonlinear view - a low-dimensional
nonlinear system generating psychotic symptoms - may provide the
foundation for a more parsimonious theory of schizophrenia compared
to traditional multicausal models. In several of the nonlinear
cases we also observed the qualitative "fingerprint" of deterministic
chaos: a decay of deterministic features of the course of disorder
with time.
Keywords chaos, dynamical disease, forecasting, self-organization,
schizophrenia, synergetics
weitere papers zum Thema:
Ciompi L. (1997). Sind schizophrene Psychosen dissipative Strukturen?
Die Hypothese der Affektlogik. In: Schiepek G und Tschacher W
(Hrsg.), Selbstorganisation in Psychologie und Psychiatrie, (pp.
191-217). Braunschweig: Vieweg.
Ciompi L, Ambühl B, & Dünki R. (1992). Schizophrenie und Chaostheorie. System Familie, 5, 133-147.
Schiepek G, & Schoppek W. (1992). Synergetik in der Psychiatrie: Simulation schizophrener Verläufe auf der Grundlage nichtlinearer Differenzengleichungen. Systeme, 6, 22-57.