alexa Some considerations on estimating event-related brain signals.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Krieger S, Timmer J, Lis S, Olbrich HM

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Abstract Understanding the timing of mental acts is one of the prominent questions in information processing research. The analysis of event related potentials (ERP) with their high temporal resolution might make access to cognition related brain activity possible. We consider three major problems which make the application of ERPs questionable and then propose some solutions to these problems. The primary problem concerns the separation of the ERPs from the background EEG which is not related to the stimulus. The most common method used is averaging. We argue that this is not the most appropriate method and suggest an alternative for estimating the signal in single-trial recordings. Artifacts present a second problem. We will first review established methods of dealing with eye-movement artifacts and then propose an alternative. We will also report on current work on the parametrisation of single-trial signal estimates, which constitute the third problem considered.
This article was published in J Neural Transm Gen Sect and referenced in Journal of Addiction Research & Therapy

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