Katarzyna Ewa Polanowska

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PURPOSE Recent research in patients with chronic aphasia shows an association between excitatory anodal transcranial direct current stimulation (A-tDCS) of the stroke-affected left hemisphere coupled with speech and language therapy (SLT) and better language performance. The present study aimed to investigate this association during the early post-stroke(More)
BACKGROUND AND PURPOSE Recent research suggests that an increased level of stroke-affected left hemisphere cortical (especially frontal) excitability is associated with better language improvement in aphasic patients. Anodal transcranial direct current stimulation (A-tDCS), increasing cortical activity, may facilitate perilesional left hemisphere(More)
OBJECTIVE To determine whether cumulative anodal transcranial direct current stimulation (A-tDCS) of the left dorsolateral prefrontal cortex (DLPFC) could enhance rehabilitation of memory and attention in patients with traumatic brain injury (TBI). SETTING Inpatient and outpatient neurorehabilitation unit. PARTICIPANTS Twenty-three adult patients, 4- to(More)
The aim of this randomised, double-blind study was to investigate the therapeutic effectiveness of left-hand electrical stimulation for patients with post-stroke left visuo-spatial neglect. This approach was hypothesised to enhance activation of the right hemisphere attention system and to improve visual exploration of extrapersonal space. Participants (n =(More)
Left unilateral spatial neglect resulting from right brain damage is characterized by loss of awareness for stimuli in the contralesional side of space, despite intact visual pathways. We examined using fMRI whether patients with neglect are more likely to consciously detect in the neglected hemifield, emotionally negative complex scenes rather than(More)
BACKGROUND Diffuse brain injury is a key component of post-cardiac arrest syndrome reported in 30-80% of survivors of out-of-hospital cardiac arrest (OHCA). It is responsible for a high mortality rate, and is a common cause of cognitive and neurological deficits and disability. Symptom variability and dynamics and the rehabilitation potential remain poorly(More)
Clinical consequences of brain injuries are not simply the result of the initial insult, but also reflect dynamic changes of activity in disrupted neural networks, some of which might be maladaptive. Transcranial direct current stimulation (tDCS), which delivers weak polarizing direct currents to the cortex, is used to modulate cortical excitability. The(More)
Transcranial direct current stimulation (tDCS) is an emerging technique of non-invasive brain stimulation that has been found useful in facilitating treatment of various neurological disorders, especially stroke. Currently available criteria for single application of several minutes-long stimulation at 1-2 mA have been considered safe. However, knowledge(More)
Motor neglect is characterized by underutilization of one side of the body when this failure cannot be attributed to primary sensory and motor defects. Impaired motor activity manifests itself in disturbance of using spontaneously contralesional limbs in the absence of severe hemiplegia (motor neglect) or in reduced readiness to initiate and carry out(More)
Apraxia of speech (AOS) is a motor speech disorder, most typically caused by stroke, which in its "pure" form (without other speech-language deficits) is very rare in clinical practice. Because some observable characteristics of AOS overlap with more common verbal communication neurologic syndromes (i.e. aphasia, dysarthria) distinguishing them may be(More)