![]() Our findings indicate distinct electrophysiological patterns associated with task-unrelated and dynamic thoughts, suggesting these neural measures capture the heterogeneity of our ongoing thoughts. Alpha-power variability was increased for task-unrelated, freely moving, and unconstrained thoughts. Frontal electrodes showed enhanced alpha power for freely moving thoughts relative to non-freely moving thoughts. Parietal P3 was larger for task-related relative to task-unrelated thoughts, whereas frontal P3 was increased for deliberately constrained compared with unconstrained thoughts. Unrelated thought train windows#We examined three EEG measures across different time windows as a function of each thought type: stimulus-evoked P3 event-related potentials and non-stimulus-evoked alpha power and variability. ![]() The current study aimed to determine the electrophysiological signatures of these dynamics by recording electroencephalogram ( EEG) while participants performed an attention task and periodically answered thought-sampling questions about whether their thoughts were 1) task-unrelated, 2) freely moving, 3) deliberately constrained, and 4) automatically constrained. Reports of such task-unrelated thoughts (TUTs) predict both poor performance on demanding cognitive tasks and blood-oxygen-level-dependent (BOLD) activity in the default mode network (DMN). However, the neural correlates of such thought dynamics are unknown. Self-generated thoughts unrelated to ongoing activities, also known as mind-wandering, make up a substantial portion of our daily lives. A recent theoretical framework highlighted a different aspect of thinking-how it dynamically moves between topics. Traditionally, research focused on whether or not these thoughts are related to ongoing tasks, and has identified reliable and distinct behavioral and neural correlates of task-unrelated and task-related thought. A content-thought disorder is typically characterized by the experience of multiple delusional fragments. A variety of thought disorders were said to be characteristic of people with schizophrenia. Humans spend much of their lives engaging with their internal train of thoughts. A thought disorder (TD) is any disturbance in cognition that adversely affects language and thought content, and thereby communication. the intrusion of irrelevant or bizarre thought), whereas alogia (also known as laconic speech). ![]() These findings support the view that WM enables TUT to persist in situations permissive to mind wandering ( Teasdale et al., 1993 Smallwood & Schooler, 2006 ). Distinct electrophysiological signatures of task-unrelated and dynamic thoughts. Paralogia is defined as positive thought disorder (i.e. The present study establishes that task-unrelated thought (TUT) increases with increasing working memory capacity (WMC) when tasks make few demands on working memory (WM) resources. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |