Document Detail

Coping with spatial attention in real space: a low-cost portable testing system for the investigation of visuo-spatial processing in the human brain.
MedLine Citation:
PMID:  20079374     Owner:  NLM     Status:  MEDLINE    
While two-dimensional stimuli may be easily presented with any computer, an apparatus which allows a range of stimuli to be presented in three dimensions is not easily or cheaply available to researchers or clinicians. To fill this gap, we have developed the Realspace Testing System (RTS) which addresses the need for a flexible and multimodal stimulus presentation system capable of displaying stimuli in a three-dimensional space with a high degree of temporal accuracy. The RTS is able to control 26 channels of visual or audio stimuli, to send trigger pulses during each trial to external devices, such as a transcranial magnetic stimulator, and to record subject responses during the testing sessions. The RTS is flexible, portable and can be used in laboratory or clinical settings as required while being built at a low cost using off the shelf components. We have tested the RTS by performing an exploratory experiment on the role of right posterior parietal cortex in visuo-spatial processing in conjunction with online transcranial magnetic stimulation (TMS) and verified that the system can accurately present stimuli as needed while triggering a TMS pulse during each trial at the required time. The RTS could be appealing and useful to a range of researchers or clinicians who may choose to use it much as we have designed it, or use it in its current state as a starting point to customize their stimulus control systems in real space.
Benjamin Wolfe; Richard J Rushmore; Antoni Valero-Cabré
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2010-01-14
Journal Detail:
Title:  Journal of neuroscience methods     Volume:  187     ISSN:  1872-678X     ISO Abbreviation:  J. Neurosci. Methods     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-03-04     Completed Date:  2010-05-25     Revised Date:  2013-05-31    
Medline Journal Info:
Nlm Unique ID:  7905558     Medline TA:  J Neurosci Methods     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  190-8     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 Elsevier B.V. All rights reserved.
Undergraduate Research Opportunities Program at Boston University, United States.
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MeSH Terms
Acoustic Stimulation / methods*
Attention / physiology*
Brain / physiology*
Cerebral Cortex / physiology
Magnetic Resonance Imaging
Online Systems
Photic Stimulation / methods*
Reaction Time / physiology
Reproducibility of Results
Space Perception / physiology*
Transcranial Magnetic Stimulation
Visual Perception / physiology*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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