Use of a novel contingency stimulator in Unilateral Spatial Neglect

The trial of a treatment device for Unilateral Spatial Neglect (USN) is reported. A patient who had suffered a right hemisphere stroke that resulted in left sided neglect was studied over a six month period. The study involved the use of a customized electrical device providing stimulation to the neglected hand, triggered by movement of the unaffected side. A battery of neglect measures were performed regularly throughout the study period. Though the results were difficult to interpret, there was no conclusive evidence that the device was effective. The possible reasons for this, the methodological difficulties inherent in studies of this type and suggestions for further studies are discussed.