Resumo

VIDAL FIGUEREDO, R. J; PELLEGRINO, F. C  e  RIQUELME, L. Analysis and standarization of cerebral interhemispheric coherence in adult dogs. InVet [online]. 2007, vol.9, n.1, pp.111-122. ISSN 1668-3498.

The analysis of coherence is the correlation between two EEG channels, and gives information about the common frecuencial component, and its association value. Their elements are: cross power spectra, coherence spectra, and phase spectra. Our finality was research and relates minutely the intrahemisferic coherence in adults' dogs, whit the idea to establish normal patterns. In additional way, we have decreed some hypothesis that acquaintance the results and the anatomic connections involved. We worked with 24 healthy adult animals, all of them mayors of 1 year old. All dogs were normal at physic and neurological examination, and none had history of neurological illness. The electroencephalographic record was obtained with a computer electroencephalographic and brain mapping soft, with 12 simultaneous channels of registry. Significant statistic differences in the behavior were found in the variables studied (coherence by channels and by electroencephalographic bands). The temporal channels show a typical pattern of behavior in the limits of theta band; this is different in dorsal channels, where the coherence seams to be placed on alpha band.

Palavras-chave : Cerebral interhemispheric coherence; Dogs; Quantitative electroencephalography; Spectral analysis.

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