A possible thalamic component of the auditory evoked potential in the rat.
An attempt is described to identify a thalamic component of the auditory evoked potential in the rat. Auditory potentials were recorded simultaneously from skull locations over the thalamus and the primary auditory cortex. From over the thalamus a slow positive response was recorded with a mean peak latency of 7.3 ms. This preceded the primary cortical response by 1.2 ms. It is concluded that this potential is a more likely candidate for a thalamic response than either a late high frequency component of the brainstem auditory evoked potential or else one of the early components of the middle latency auditory evoked potential.
Department of Physiology, School of Medicine, University of Auckland, New Zealand.
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Shaw
D000818:Animals; D001303:Auditory Cortex / Q000502:physiology*; D005072:Evoked Potentials, Auditory; D008297:Male; D051381:Rats; D013003:Somatosensory Cortex / Q000502:physiology; D013788:Thalamus / Q000502:physiology*; D013997:Time Factors