Steady-state visual evoked potentials can be explained by temporal superposition of transient event-related responses.

ABSTRACT:

Background

One common criterion for classifying electrophysiological brain responses is based on the distinction between transient (i.e. event-related potentials, ERPs) and steady-state responses (SSRs). The generation of SSRs is usually attributed to the entrainment of a neural rhythm driven by the stimulus train. However, a more parsimonious account suggests that SSRs might result from the linear addition of the transient responses elicited by each stimulus. This study aimed to investigate this possibility.

Methodology/principal findings

We recorded brain potentials elicited by a checkerboard stimulus reversing at different rates. We modeled SSRs by sequentially shifting and linearly adding rate-specific ERPs. Our results show a strong resemblance between recorded and synt

SUBMITTER: Capilla A 

PROVIDER: S-EPMC3022588 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature