Abstract

Putative alterations of the functional activity in the staggerer mutant mouse olfactory bulb neuronal network have been studied by recording odor induced evoked field potentials (EFP) in the mitral cells layer. In standard conditions, the main feature observed in mutants was a significant increase in latency preceding the functional response of the mitral cells to the odorant. In these animals, all parameters of the average EFP were widely modified when compared with those recorded in wild mice. Amplitudes and most of the duration of the EFP phases were significantly decreased. Functional alterations were discussed according to the structural disorganization previously described in staggerer mutant mouse olfactory bulb.

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