Neuronale Korrelate der Vorhersage hierarchischer Stimulussequenzen

In daily life, we are enclosed by constantly changing structures. We perceive and learn to appreciate these so called stimulus sequences in order to appropriately adapt our behavior. For example, a step onto a moving escalator is exactly planned to avoid stumbling. But in case of an escalator not moving, the planning of the step has to be altered and adapted to the new situation. Such an adaptation of well experienced behavior is necessary after breaches of expectancy. In this dissertation, functional magnetic resonance imaging (fMRI) studies observe neural correlates of reorientation within well-known stimulus sequences after breaches of expectancy of different strength, and, of temporally remote effects after such breaches of expectancy. Moreover, it is described which cortical areas allow to efficiently predict long and hierarchically structured stimulus sequences. Data show that especially the activation of the frontopolar cortex (Brodmann Area (BA 10)) correlates with the hierarchical order of to-be-predicted stimulus sequences. While the temporally remote effect after breaches of expectancy is reflected in an attenuation of the dorsal frontomedian activity (BA 9m), the immediate reorientation, i.e. search for appropriate prediction, is reflected in activation of a complex cortical network. Thereby the (median) parietal areas can be interpreted as a regulating interface between the top-down information of prefrontal areas and bottom-up information of temporal areas. Furthermore, the anterior ventrolateral prefrontal cortex is activated the more, the less reorientation was necessary.

Grantor dc:publisher

Publikationsserver der RWTH Aachen University

Year dc:date

2011

Author dc:creator

• Kühn, Anne

Contributors dc:contributor

• Koch, Iring

• info:eu-repo/classification/ddc/150
• Kognition
• Funktionelle NMR-Tomographie
• Chunking
• Erwartung
• Episodisches Gedächtnis
• Explizites Gedächtnis
• Präfrontaler Cortex
• Anpassung
• Abruf
• Psychologie
• Vorhersagefehler
• zeitliche Reorientierung
• frontomedianer Kortex
• Brodmann Areal BA9m
• cognitve neuroscience
• fMRI
• prediction of sequences
• frontomedian cortex
• reorientation

Statement dc:rights

• info:eu-repo/semantics/openAccess

Language dc:language

ger

Identifier

https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-124391%22

OAI identifier oai:identifier

oai:publications.rwth-aachen.de:62904