Modifications of cognitive and motor tasks affect the occurrence of event-related potentials in the human cortex
Language English Country France Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
17767513
DOI
10.1111/j.1460-9568.2007.05713.x
PII: EJN5713
Knihovny.cz E-resources
- MeSH
- Adult MeSH
- Mental Processes physiology MeSH
- Electric Stimulation methods MeSH
- Electroencephalography MeSH
- Cognition physiology MeSH
- Event-Related Potentials, P300 physiology MeSH
- Contingent Negative Variation physiology MeSH
- Humans MeSH
- Brain Mapping MeSH
- Adolescent MeSH
- Cerebral Cortex physiology MeSH
- Psychomotor Performance physiology MeSH
- Hand physiology MeSH
- Dose-Response Relationship, Radiation MeSH
- Check Tag
- Adult MeSH
- Humans MeSH
- Adolescent MeSH
- Male MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
This study concerns the question of how task modification affects the frequency occurrence of event-related potentials (ERP) inside the active cortical areas. In 13 candidates for epilepsy surgery, 156 sites in the temporal (74), frontal (73), and parietal (9) cortices were recorded by means of depth and subdural electrodes. Four modifications of the somatosensory evoked P3-like potentials were performed; (i) an oddball paradigm with silent counting of target stimuli (P3c); (ii) an oddball paradigm with a hand movement in response to target stimuli (P3m); (iii) an S1-S2 paradigm, ERP in the P300 time window after the S2 stimulus, with silent counting of target stimuli (S2c), and (iv) an S1-S2 paradigm with a hand movement in response to target stimuli (S2m). In comparing the oddball paradigms with the S1-S2 (contingent negative variation, CNV) paradigms, four regions emerge that are significantly linked with the oddball P3; the prefrontal cortex, the cingulate, the amygdalo-hippocampal complex, and the lateral temporal cortex. A prominent role of the cingulate and the fronto-orbital cortex in the cognitive processing of movement was supported when tasks with identical cognitive loads but different required responses were compared. Even relatively simple cognitive tasks activate many cortical regions. The investigated areas were activated in all tests; however, small regions in each field were active or inactive in relation to the nature of the task. The study indicates a variable and task-dependent internal organization of a highly complex and widely distributed system of active cortical areas.
References provided by Crossref.org
Involvement of the subthalamic nucleus and globus pallidus internus in attention