Neuroimaging and electrophysiological studies suggest that the anterior cingulate cortex (ACC) is involved in the cognitive control of response related action. A frontocentral negative ERP-component, the N2, which probably originates from the ACC, is usually enhanced in conflict-trials that demand an unexpected response. We here used stepped adjustment of response expectation in a response-cueing task, and measured how the N2 varied with global and local cue validity. Results showed that, irrespective of the current cue validity, response times, error rates, and the frontocentral components P2, N2 and P3 increased in unexpected trials. Nevertheless, a N2 was also seen in expected trials, and its latency correlated positively with reaction times, indicating that this potential does not express response conflict only. In line with roles suggested for the ACC, we here propose that the N2 is related to the process of response selection which influences subsequent processing stages reflected in the P3. Unexpected revisions of response programs enhance and delay the N2.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.brainres.2007.10.076 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Lophine incorporated azo dye as a novel colorimetric sensor for multiple metal ions.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Laboratory of Organic Chemistry, Tarsadia Institute of Chemical Science, Uka Tarsadia University, Maliba Campus, Gopal Vidyanagar, Bardoli-Mahuva Road, Tarsadi 394650 Surat Gujarat India. Electronic address:
A single molecule sensor for several analytes is indeed desired by the scientists around the world due to obvious advantages. In this report we present a new class of Lophine incorporated azo dyes that has capacity of differential colorimetric detection of several metal ions. Interestingly the sensor was found to have pH dependent selective response towards several metals.
View Article and Find Full Text PDFA case report of gastric antral vascular ectasia treated by endoscopic band ligation combined with lauromacrogol injection.
Medicine (Baltimore)
January 2025
Department of Gastroenterology, The Affiliated People's Hospital of Ningbo University, Ningbo, China.
Rationale: Gastric antral vascular ectasia (GAVE) is a rare acquired lesion characterized by vascular dilation in the gastric antrum, frequently results in occult or overt gastrointestinal bleeding. Endoscopic intervention remains the cornerstone of therapy. Argon plasma coagulation was previously considered a first treatment option.
View Article and Find Full Text PDFMicrobiome characterization of patients with Crohn disease and the use of fecal microbiota transplantation: A review.
Medicine (Baltimore)
January 2025
Department of Gastroenterology, The Second Affiliated Hospital of Hainan Medical University, Haikou, China.
Inflammatory bowel disease is a chronic inflammatory condition predominantly affecting the intestines, encompassing both ulcerative colitis and Crohn disease (CD). As one of the most common gastrointestinal disorders, CD's pathogenesis is closely linked with the intestinal microbiota. Recently, fecal microbiota transplantation (FMT) has gained attention as a potential treatment for CD, with the effective reestablishment of intestinal microecology considered a crucial mechanism of FMT therapy.
View Article and Find Full Text PDFEffectiveness of regorafenib in second-line therapy for advanced hepatocellular carcinoma: A systematic review and meta-analysis.
Medicine (Baltimore)
January 2025
Department of Hepatobiliary Surgery, The Third Central Hospital of Tianjin, Tianjin, China.
Background: In patients with advanced hepatocellular carcinoma (HCC) following sorafenib failure, regorafenib has been used as an initial second-line drug. It is unclear the real efficacy and safety of sorafenib-regorafenib sequential therapy compared to placebo or other treatment (cabozantinib or nivolumab or placebo) in advanced HCC.
Methods: Four electronic databases (PubMed, Embase, Web of Science, and Ovid) were systematically searched for eligible articles from their inception to July, 2024.
Construction of a prognostic signature based on T-helper 17 cells differentiation-related genes for predicting survival and tumor microenvironment in head and neck squamous cell carcinoma.
Medicine (Baltimore)
January 2025
Department of Otolaryngology, Hangzhou Red Cross Hospital (Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine), Hangzhou, Zhejiang, China.
T-helper 17 (Th17) cells significantly influence the onset and advancement of malignancies. This study endeavor focused on delineating molecular classifications and developing a prognostic signature grounded in Th17 cell differentiation-related genes (TCDRGs) using machine learning algorithms in head and neck squamous cell carcinoma (HNSCC). A consensus clustering approach was applied to The Cancer Genome Atlas-HNSCC cohort based on TCDRGs, followed by an examination of differential gene expression using the limma package.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!