The BOLD response during Stroop task-like inhibition paradigms: Effects of task difficulty and task-relevant modality

Mitchell, R.

Abstract

Previous studies of the Stroop task propose two key mediators: the prefrontal and cingulate cortices but hints exist of functional specialization within these regions. This study aimed to examine the effect of task modality upon the prefrontal and cingulate response by examining the response to colour, number, and shape Stroop tasks whilst BOLD fMRI images were acquired on a Siemens 3 T MRI scanner. Behavioural analyses indicated facilitation and interference effects and a noticeable effect of task difficulty. Some modular effects of modality were observed in the prefrontal cortex that survived exclusion of task difficulty related activations. No effect of task-relevant information was observed in the anterior cingulate. Future comparisons of the mediation of selective attention need to consider the effects of task context and task difficulty.

Citation

Mitchell, R. (2005). The BOLD response during Stroop task-like inhibition paradigms: Effects of task difficulty and task-relevant modality. Brain and Cognition, 59(1), 23-37. https://doi.org/10.1016/j.bandc.2005.04.001

• Journal Article Type: Article
• Publication Date: Oct 1, 2005
• Deposit Date: Mar 10, 2015
• Publicly Available Date: Mar 10, 2015
• Journal: Brain and Cognition
• Print ISSN: 0278-2626
• Electronic ISSN: 1090-2147
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 59
• Issue: 1
• Pages: 23-37
• DOI: https://doi.org/10.1016/j.bandc.2005.04.001
• Keywords: Attention, Prefrontal cortex, Cingulate cortex, fMRI, Task modality, Task difficulty, Stroop task.
• Public URL: https://durham-repository.worktribe.com/output/1536675