View clinical trials related to Attention Control.
Filter by:The project is dedicated to understanding the integration within the brain of signals of different natures that contribute to attentional control. The investigator will make use of standardized experimental displays involving the discrimination of a target (tilted-bar) presented together with 3 distractor items, with one stimulus in each visual quadrant. Across three fMRI experiments in healthy participants, the investigator will manipulate different types of signals that will guide the subject's attention towards one of the four quadrants: Exp 1 - task instruction & item salience; Exp 2 - probabilistic target location; Exp 3 - probabilistic reward. The investigator expects that irrespective of the nature of the control signal, activity in dorsal parietal cortex will index the currently relevant/attended location. Moreover, The investigator expects that upon changes of the most relevant location, one will observe activation of the ventral parietal cortex, plus increased inter-regional connectivity between ventral and dorsal parietal regions - again irrespective of the nature of the attention guiding signals.
Cognitive impairments occur frequently after stroke, and are associated with significant long-term activities of daily living (ADL) disability and poor quality of life. This research study will undertake an innovative approach addressing cognitive impairments, by examining a new patient-centered functionally-relevant rehabilitation intervention that teaches individuals with cognitive impairments to manage their deficits to reduce ADL disability.
Individuals with cognitive impairments after stroke sustain significant disability in their daily tasks, and account for a significant proportion of stroke-related healthcare costs. The proposed study examines a novel intervention, strategy training, that shows promise for helping individuals with stroke-related cognitive impairments reduce disability in daily tasks, which may lead to reductions in healthcare costs. We predict that strategy training will result in significantly greater independence 6 months after stroke compared to an attention control intervention, and that strategy training may reduce cognitive impairments.