Monitoring top-down and bottom-up modulation of auditory steady-state responses and its relationship with behaviour

• Antragsteller: Professor Dr. Nathan Weisz
• Fachliche Zuordnung: Allgemeine, Kognitive und Mathematische Psychologie
• Förderung: Förderung von 2005 bis 2008
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 20989653

Selective attention enables us to focus on specific behaviourally relevant stimuli or aspects of stimuli. Generally, this faculty comprises a wide-spread neuronal network, including extra-sensory cortices, which has been studied using various appraoches. Concerning the influence on sensory cortical areas it is widely accepted that attention influences responses in secondary areas. However in the visual domain, more and more studies are beginning to show also effects for primary areas. The influence of attention on primary audtory cortex however is still controversial. The main aim of the present project will be to analyze the influence of different bottom-up and top-down modulations of attention on the auditory neuromagnetic steady-state response, for which generators are known to be mainly localized in the primary auditory cortex. Besides that, conventional event-related fields (e.g. N1) and the induced gamma band activity can be analyzed to give a global perspective. Especially concerning the induced gamma only few data is available concerning auditory attention. All studies include behavioral measurements, so that conclusions can not only be drawn about condition differences, but also about which changes could be behaviourally relevant.

• DFG-Verfahren: Forschungsstipendien
• Internationaler Bezug: Frankreich
• Gastgeber: Professor Dr. Olivier Bertrand