Introduction Stroke is the main cause of disability in the world and its sequelae have a great impact in the functional independence and quality of life of patients and families. Unilateral spatial neglect is one of the most frequent cognitive deficits after stroke, and its maintenance is associated with poor functional outcome of the rehabilitation process. For many years clinical research has been conducted to develop new and effective rehabilitation strategies for neglect. Noninvasive brain stimulation (NIBS) techniques are important tools in this regard, and it should be considered as a therapeutic intervention used in combination with conventional neuropsychological approaches. Transcranial direct current stimulation (tDCS) is a noninvasive, safe, neurophysiological technique able to modulate cortical activity by inducing a weak electric current into the brain. The studies focused on neglect symptoms treatment by means of tDCS over the lesional and contralesional hemisphere have shown promising results and its combination with conventional neglect therapies may enhance treatment efficacy and speed the recovery. Objectives To improve neglect symptoms by reducing the pathological hyperactivity of the undamaged hemisphere after right medial cerebral artery stroke, through the application of multisite tDCS, and to validate a NIBS protocol for the enhancement of conventional neuropsychological rehabilitation outcome. Methods The sample will be composed by 30 patients with spatial neglect secondary to a ischemic stroke in the middle cerebral artery in subacute stage (3 to 12 months since the event). The patients will be randomly assigned to one experimental group (Active, Sham, and Control). The intervention protocol consists in a two weeks intervention (10 sessions, 45 min, Monday to Friday) of tDCS and neuropsychological rehabilitation applied concurrently. In each session a 20 min tDCS at 2 milliamps (m will be applied over P3 according to 10/20 EEG international system (cathodal) with return electrodes placed in C3,CP5,CP1,Pz,PO3,PO7,P7 (10/20 EEG). StarStim® tDCS 8 channels Multisite device will be used.
Age range
18 Years – 89 Years
Sex
ALL
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Change in hemispatial neglect symptomatology
Timeframe: Pre and post intervention (3 days after the end of intervention)
Change in hemispatial neglect symptomatology
Timeframe: Pre and post intervention (3 days after the end of intervention)
Change in hemispatial neglect symptomatology
Timeframe: Pre and post intervention (3 days after the end of intervention)
Change in hemispatial neglect symptomatology
Timeframe: Pre and post intervention (3 days after the end of intervention)
Change in functional independence
Timeframe: Pre and post intervention (3 days after the end of intervention)
Change in functional independence
Timeframe: Pre and post intervention (3 days after the end of intervention)
Change in general cognitive functioning
Timeframe: Pre and post intervention (3 days after the end of intervention)
Change in neurophysiological assessment
Timeframe: Pre and post intervention (3 days after the end of intervention)