Stimulus sequence context differentially modulates inhibition-related theta and delta band activity in a go/no-go task.


Journal Article

Recent work suggests that dissociable activity in theta and delta frequency bands underlies several common ERP components, including the no-go N2/P3 complex, which can better index separable functional processes than traditional time-domain measures. Reports have also demonstrated that neural activity can be affected by stimulus sequence context information (i.e., the number and type of preceding stimuli). Stemming from prior work demonstrating that theta and delta index separable processes during response inhibition, the current study assessed sequence context in a go/no-go paradigm in which the number of go stimuli preceding each no-go was selectively manipulated. Principal component analysis of time-frequency representations revealed differential modulation of evoked theta and delta related to sequence context, where delta increased robustly with additional preceding go stimuli, while theta did not. Findings are consistent with the view that theta indexes simpler initial salience-related processes, while delta indexes more varied and complex processes related to a variety of task parameters.

Full Text

Duke Authors

Cited Authors

  • Harper, J; Malone, SM; Bachman, MD; Bernat, EM

Published Date

  • May 2016

Published In

Volume / Issue

  • 53 / 5

Start / End Page

  • 712 - 722

PubMed ID

  • 26751830

Pubmed Central ID

  • 26751830

Electronic International Standard Serial Number (EISSN)

  • 1540-5958

International Standard Serial Number (ISSN)

  • 0048-5772

Digital Object Identifier (DOI)

  • 10.1111/psyp.12604


  • eng