Klassische Konditionierung posturaler Reaktionen beim Menschen, unter Einbeziehung der Kleinhirnfunktion

The aim of the current study was to examine whether postural reactions following externally triggered pertubations of the body equilibrium can be modified due to a motor learning process. By using the classical conditioning paradigm a ramp-shaped movement, elicited by a dynamic platform, represented the unconditioned stimulus (US) and a preceeding auditory information the conditioning stimulus (CS). To modify spinal postural reflexes supraspinal structures have to be involved. Subjects used the information given by the CS in a completely different manner. Two classes of response-patterns were observed, which were assumed to be based on different strategies. For the strategy I an associative process for strategy II a primarily non-associative process was assumed. Nowadays the cerebellum is accepted to be substantially involved in associative and non-associative processes. A patient, suffering from an almost unilateral circumscript lesion in the intermediate part of the left cerebellar anterior lobe resulting from a tumor exstirpation, was examined with our paradigm. From the findings it can be concluded that the cerebellum is substantially involved in plastic processes. This is also coherent with the clinically based functional compartimentation of the cerebellum which postulates the intermediate parts of the cerebellum to be involved in associative learning processes.

Level thesis:degree_level

thesis.doctoral

Grantor dc:publisher

Ludwig-Maximilians-Universität

Year

2003

Author dc:creator

• Lachauer, Steffen

Repository record source_url

https://edoc.ub.uni-muenchen.de/734/

OAI identifier oai:identifier

oai:edoc.ub.uni-muenchen.de:734