Background: According to our studies, based on intracerebral recordings of cognitive Event Related Potentials (ERP), the cognitive activities in the the Basal Ganglia (BG) are organized in some way other than the well-known organization of the cortico-BG-thalamocortical circuits.
Purpose: The cognitive role of the subthalamic nucleus (STN) has been largely unknown. Direct connections with the cortex that bypass the circuitries might underlie the processing of specific cognitive functions in the STN. STN seems to be specifically involved in the processing of some cognitive activities, e.g. of the executive functions.
Methods: A modified protocol with a dual task elicited local field ERP within the STN. Impact of cortical 1 Hz rTMS on STN was tested. ERD/S in was tested in visuomotor tasks with single letters writing.
Results: No generators of ERP (P3-like potentials) were elicited by the standard oddball protocol in the STN (at variance with recordings from the putamen, caudate and pallidum). rTMS over the right inferior frontal cortex caused a shortening of latencies of ERP in standard and dual protocols. No changes were observable after the rTMS over the dorzolateral prefrontal cortex and sham stimulation. In the STN, only the tasks with an increased demand on executive functions produced the alpha and beta ERD/S (event-related desynchronization/synchronization).
Conclusion: Our results indicate a specific, task-related involvement of the STN in the cognitive activities. Cognitive processing in the STN is possibly processed via hyperdirect cortico-STN pathway. Certain effects of DBS surgery on cognitive performance could be explained by a direct effect on 'cognitive' parts of the STN.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/S1353-8020(09)70788-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Electroacupuncture improves cognitive impairment after subarachnoid hemorrhage in rats through the PI3K/AKT signaling pathway.
Acupunct Med
January 2025
Combination of Acupuncture and Medicine Innovation Research Center, Shaanxi University of Chinese Medicine, Xianyang, China.
Objective: Cognitive impairment (CI) is highly prevalent in subarachnoid hemorrhage (SAH) patients. The phosphatidylinositol 3-kinase (PI3K)/AKT pathway plays a critical role in neuronal survival in a variety of central nervous system injuries. This study aimed to determine whether electroacupuncture (EA) at and LI20 ameliorates SAH-CI in a rat model and to examine whether it modulates the PI3K/AKT pathway by administering a PI3K inhibitor (LY294002) versus dimethyl sulfoxide (DMSO) vehicle.
View Article and Find Full Text PDFEffect of Social Restriction Due to the COVID-19 Pandemic on Activity of Daily Living and Disease Severity of Patients With Alzheimer Disease: Sub-analysis of a Double-blinded Noninferiority Study of Donepezil Patches and Donepezil Tablets.
Alzheimer Dis Assoc Disord
January 2025
Teikoku Seiyaku, Higashikagawa, Japan.
Background: We previously reported that social restrictions due to the COVID-19 pandemic led to a decline in cognitive function in patients with Alzheimer disease (AD). Here, we assessed the effects of COVID-19 restrictions on the activities of daily living (ADL) and disease severity in patients by comparing them to a control group.
Methods: We examined the impact on ADL, evaluated using disability assessment for dementia (DAD), and disease severity, evaluated using the ABC dementia scale, in patients with mild-to-moderate AD.
Dietary Modification Patterns and Interventions Among Weight Loss Seekers in Tamil Nadu, South India: A Cross-Sectional Analysis of Intermittent Fasting and Alternative Dietary Approaches.
Cureus
December 2024
Community Medicine, Dhanalakshmi Srinivasan Medical College and Hospital, Siruvachur, IND.
Background The escalating global obesity epidemic requires comprehensive investigations for effective weight management strategies. Understanding the patterns, barriers, and facilitators of dietary interventions is crucial for developing effective weight management protocols. This research aims to assess dietary modification interventions among weight loss subjects in Tamilnadu, South India.
View Article and Find Full Text PDFA Narrative Review of the Impact of Sleep on Athletes: Sleep Restriction Causes and Consequences, Monitoring, and Interventions.
Cureus
December 2024
Physical Medicine and Rehabilitation, Unidade de Saúde Local de Lisboa Ocidental, Lisboa, PRT.
This narrative review synthesizes evidence on the impact of sleep on athletic performance, the prevalence and causes of sleep disturbances, and effective monitoring and intervention strategies to enhance sleep quality and duration. A comprehensive review of case studies, observational studies, randomized controlled trials, systematic reviews, and meta-analyses was conducted using PubMed, Cochrane Library, and Google Scholar up to July 2024. Sleep plays a crucial role in the overall well-being and performance of athletes, yet sleep issues are highly prevalent due to factors such as competition schedules, psychological stress, and travel across time zones.
View Article and Find Full Text PDFTechnology for sustainable living: The impact of digital inclusion on the health of China's elderly living alone.
SSM Popul Health
March 2025
School of Finance, Henan University of Economics and Law, 450046, Zhengzhou, China.
Enhancing elderly health has become an important measure for coping with population ageing and building a healthy China. Among them, older adults living alone seem to suffer from greater loneliness and psychological stress. We analyzed data from the China Health and Retirement Longitudinal Study in 2015, 2018, and 2020, and carried out an empirical investigation into the impact of digital inclusion on the health of elderly individuals living alone, using two-way fixed effects models and two-stage least squares.
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!