Neural similarity across task load relates to cognitive reserve and brain maintenance measures on the Letter Sternberg task: a longitudinal studyWorking memoryWithin-subjects fMRICognitive reserveBrain maintenanceLongitudinalBrain Imaging and Behavior - The aging process is characterized by change across ...
研究者采用fMRI检测21个正常被试执行参量保持任务 Sternberg 和操作任务 letterback task 的脑活动。在双侧前额叶背侧和前部、左半球腹侧前额叶及双侧顶叶区域发现 两个任务均普通存在与负荷相关的信号增加。在双侧前额叶背部皮质发现操作vs 保持和保持任务中反应对编码 存贮 的工作负荷 任务的交互作用。他们发现这些不...
Correction: An Automated, Adaptive Framework for Optimizing Preprocessing Pipelines in Task-Based Functional MRI BOLD fMRI is sensitive to blood-oxygenation changes correlated with brain function; however, it is limited by relatively weak signal and significant noise ... NW Churchill,S Robyn,AP Babak...
have done connectivity analysis on three memory cycles commonly established in healthy controls during working memory task and absent in schizophrenics.The authors have employed SIRP(Sternberg Item recognition paradigm) working memory and used data from Fbirn site for carrying out the said fMRI study ...
Sternberg taskThe human cerebral vasculature responds to changes in blood pressure and demands for oxygenation via cerebral autoregulation. Changes in cerebrovascular tone (vasoconstriction and vasodilation) also mediate the changes in blood flow measured by the BOLD fMRI signal. This cerebrovascular ...