Title :
Proposal of Synchronization Indexes of Single Neuron Activity on Periodic Stimulus
Author :
Dugue, P. ; Le Bouquin-Jeannes, R. ; Faucon, G.
Author_Institution :
Lab. Traitement du Signal et de l´Image, INSERM, Rennes, France
Abstract :
Synchronization of a neuronal response to a given periodic stimulus is usually measured by Goldberg and Brown´s vector strength metric (1969). The limitations of this index are discussed and two alternative indexes are proposed: the corrected vector strength index and the phase variance index. Using a standard data set, the three metrics are compared and the results indicate that the vector strength index should be interpreted with great care. The proposed new indexes are both more relevant to ´synchronization´. Moreover, these two indexes can be tuned to show a large variation of behavior depending on the user´s idea of synchronization.
Keywords :
neurophysiology; synchronisation; corrected vector strength index; neuronal response; periodic stimulus; phase variance index; single neuron activity; synchronization; synchronization indexes; Amplitude modulation; Chaos; Delay; Frequency synchronization; Histograms; Nervous system; Neurons; Oscillators; Physics; Proposals; Phase synchronization; amplitude modulation; nervous system;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0727-3
DOI :
10.1109/ICASSP.2007.367018