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Using brain potentials to understand prism adaptation: the error-related negativity and the P300
- Source :
- Frontiers in Human Neuroscience, Vol 9 (2015), Frontiers in Human Neuroscience
- Publication Year :
- 2015
- Publisher :
- Frontiers Media S.A., 2015.
-
Abstract
- Prism adaptation (PA) is both a perceptual-motor learning task as well as a promising rehabilitation tool for visuo-spatial neglect (VSN) – a spatial attention disorder often experienced after stroke resulting in slowed and/or inaccurate motor responses to contralesional targets. During PA, individuals are exposed to prism-induced shifts of the visual-field while performing a visuo-guided reaching task. After adaptation, with goggles removed, visuo-motor responding is shifted to the opposite direction of that initially induced by the prisms. This visuo-motor aftereffect has been used to study visuo-motor learning and adaptation and has been applied clinically to reduce VSN severity by improving motor responding to stimuli in contralesional (usually left-sided) space. In order to optimize PA’s use for VSN patients, it is important to elucidate the neural and cognitive processes that alter visuomotor function during PA. In the present study, healthy young adults underwent PA while event-related potentials (ERPs) were recorded at the termination of each reach (screen-touch), then binned according to accuracy (hit vs. miss) and phase of exposure block (early, middle, late). Results show that two ERP components were evoked by screen-touch: an early error-related negativity (ERN), and a P300. The ERN was consistently evoked on miss trials during adaptation, while the P300 amplitude was largest during the early phase of adaptation for both hit and miss trials. This study provides evidence of two neural signals sensitive to visual feedback during PA that may sub-serve changes in visuomotor responding. Prior ERP research suggests that the ERN reflects an error processing system in medial-frontal cortex, while the P300 is suggested to reflect a system for context updating and learning. Future research is needed to elucidate the role of these ERP components in improving visuomotor responses among individuals with VSN.
- Subjects :
- medicine.medical_specialty
genetic structures
medicine.medical_treatment
media_common.quotation_subject
error-related negativity
Context (language use)
Adaptation (eye)
Audiology
behavioral disciplines and activities
050105 experimental psychology
Error-related negativity
Neglect
Feedback
lcsh:RC321-571
03 medical and health sciences
Behavioral Neuroscience
0302 clinical medicine
Event-related potential
medicine
0501 psychology and cognitive sciences
P300
lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry
Biological Psychiatry
Original Research
media_common
Rehabilitation
05 social sciences
Cognition
spatial realignment
strategic recalibration
Psychiatry and Mental health
Neuropsychology and Physiological Psychology
visuo-spatial neglect
Neurology
Prism adaptation
Psychology
Neuroscience
030217 neurology & neurosurgery
psychological phenomena and processes
Event-related potentials
Subjects
Details
- Language :
- English
- ISSN :
- 16625161
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Frontiers in Human Neuroscience
- Accession number :
- edsair.doi.dedup.....c40c4af51ce13095947e7627f476f9c0