Characterisation of brainstem lateral line neurons in Goldfish, Carassius auratus: frequency selectivity, spatial excitation patterns and flow sensitivity [Elektronische Ressource] / vorgelegt von Silke Künzel

Characterisation of Brainstem Lateral Line Neurons in Goldfish, Carassius auratus: Frequency Selectivity, Spatial Excitation Patterns and Flow Sensitivity Dissertation Zur Erlangung der Doktorgrades (Dr. rer. nat.) der Mathematisch-Naturwissenschaftlichen Fakultät der Rheinischen Friedrich-Wilhelms-Universität vorgelegt von Silke Künzel aus Linnich Bonn Oktober 2009 Angefertigt mit Genehmigung der Mathematisch-Naturwissenschaftlichen Fakultät der Rheinischen Friedrich-Wilhelms-Universität Bonn 1. Gutachter: PD Dr. J. Mogdans 2. Gutachter: Prof. Dr. H. Bleckmann Tag der Promotion: 21.12.2009 Erscheinungsjahr: 2010 ABSTRACT ABSTRACT In the present study lateral line units in the medial octavolateral nucleus (MON) in the brainstem in goldfish, Carassius auratus, were extracellulary recorded. The aim of the work was to investigate and characterize the response behaviour of these units to different hydrodynamic stimuli to learn more about central processing of lateral line information. It was investigated how MON units respond to a vibrating sphere in terms of different frequencies, locations, and sphere vibration directions. The spatial excitation patterns of Mon units were described and finally the response behaviour to water flow in different directions and velocities. The responses of MON units to a vibrating sphere presented with various vibration frequencies were analyzed and described.