Supported by the NIH under grant number R01 MH063476.
Habituation of auditory evoked potentials in intracranial and extracranial recordings
Version of Record online: 18 MAY 2006
Volume 43, Issue 2, pages 137–144, March 2006
How to Cite
Rosburg, T., Trautner, P., Boutros, N. N., Korzyukov, O. A., Schaller, C., Elger, C. E. and Kurthen, M. (2006), Habituation of auditory evoked potentials in intracranial and extracranial recordings. Psychophysiology, 43: 137–144. doi: 10.1111/j.1469-8986.2006.00391.x
- Issue online: 18 MAY 2006
- Version of Record online: 18 MAY 2006
- Received September 6, 2005; Accepted February 9, 2006)
- Auditory evoked potentials;
- Auditory cortex;
- Sensory gating
Effects of stimulus repetition are investigated in short-term habituation experiments. In these experiments, trains of stimuli are applied with longer intervals of no stimulation between the trains. In scalp recordings, an amplitude and latency decrease of the auditory N100 is usually observed at the beginning of the train. This contrasts to a recent finding with intracranial recordings, exhibiting an effect on N100 amplitude, but not on its latency. In the current study, P50 and N100 were simultaneously recorded intra- and extracranially in epilepsy patients. The amplitudes of P50 and N100 decreased in both recordings, whereas the P50 latency was not significantly affected. A latency decrease was revealed for the extracranially recorded N100, but not for the intracranial N100. This dissociation between the intracranial and scalp recordings might be explained by a different sensitivity of the two measurements for N100 generators.