Bilateral regions of the intraparietal sulcus (IPS) appear to be functionally selective for both rudimentary non-symbolic number tasks and higher-level symbolic number tasks in adults and older children. Furthermore, the ability to mentally represent and manipulate approximate non-symbolic numerical quantities is present from birth. These factors leave open whether the specialization of the IPS develops through the experience of learning a symbolic number system or if it is already specialized before symbolic number acquisition. Using the newly emerging technique of functional Near-Infrared Spectroscopy (fNIRS) over left and right parietal and lateral occipital regions, we show right parietal specialization for number in 6-month-old infants. These results extend the current literature in three ways: by successfully implementing an event-related NIRS design in infants, by showing parietal specialization for number occurs before the acquisition of language, and by suggesting number representation may be initially right lateralized and becomes bilateral through experience.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2930081 | PMC |
| http://dx.doi.org/10.1016/j.neuroimage.2010.06.030 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The effect of Lewy body (co-)pathology on the clinical and imaging phenotype of amnestic patients.
Brain
January 2025
Reina Sofia Alzheimer Centre, CIEN Foundation, ISCIII, Madrid, Spain.
Lewy body (LB) pathology is present as a co-pathology in approximately 50% of Alzheimer's disease (AD) dementia patients and may even represent the main neuropathologic substrate in a subset of patients with amnestic impairments. However, the degree to which LB pathology affects the neurodegenerative course and clinical phenotype in amnestic patients is not well understood. Recently developed α-synuclein seed amplification assays (αSyn-SAAs) provide a unique opportunity for further investigating the complex interplay between AD and LB pathology in shaping heterogeneous regional neurodegeneration patterns and clinical trajectories among amnestic patients.
View Article and Find Full Text PDFA Prognostic Riskscore Model Related to Infection in Stomach Adenocarcinoma.
Int J Genomics
January 2025
Department of General Medicine, Chongqing University Central Hospital, Chongqing Emergency Medical Center, Chongqing Key Laboratory of Emergency Medicine, Chongqing, China.
() is associated with the development of various stomach diseases, one of the major risk factors for stomach adenocarcinoma (STAD). The infection score between tumor and normal groups was compared by single-sample gene set enrichment analysis (ssGSEA). The key modules related to infection were identified by weighted gene coexpression network analysis (WGCNA), and functional enrichment analysis was conducted on these module genes.
View Article and Find Full Text PDFAge-disproportionate atrophy in Alzheimer's disease and Parkinson's disease spectra.
Alzheimers Dement (Amst)
January 2025
Introduction: Brain age gap (BAG), defined as the difference between MRI-predicted 'brain age' and chronological age, can capture information underlying various neurological disorders. We investigated the pathophysiological significance of the BAG across neurodegenerative disorders.
Methods: We developed a brain age estimator using structural MRIs of healthy-aged individuals from one cohort study.
MRI-guided clustering of patients with mild dementia due to Alzheimer's disease using self-organizing maps.
Neuroimage Rep
December 2024
The Saul R. Korey Department of Neurology, Albert Einstein College of Medicine, New York City, NY, USA.
Introduction: Alzheimer's disease (AD) is a phenotypically and pathologically heterogenous neurodegenerative disorder. This heterogeneity can be studied and disentangled using data-driven clustering techniques.
Methods: We implemented a self-organizing map clustering algorithm on baseline volumetric MRI measures from nine brain regions of interest (ROIs) to cluster 1041 individuals enrolled in the placebo arm of the EXPEDITION3 trial.
Potassium-Competitive Acid Blockers and Proton Pump Inhibitors: The Dynamic Duo of Acid Blockers.
Gastroenterol Hepatol (N Y)
December 2024
Division of Gastroenterology and Hepatology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
The management of acid-based disorders was transformed in the 1980s with the advent of proton pump inhibitors (PPIs), which target the hydrogen-potassium adenosine triphosphatase (proton pump) of the parietal cell. Potassium-competitive acid blockers (P-CABs), a newer class of medications, act at the same proton pump through a novel mechanism resulting in profound and sustained acid suppression. Although trials in Asian populations over the past decades have highlighted the potential benefit of P-CABs, clinical trials in Western populations have been initiated more recently.
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!