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  • Title: Construction and psychometric properties of a novel test for body representational neglect (Vest Test).
    Author: Glocker D, Bittl P, Kerkhoff G.
    Journal: Restor Neurol Neurosci; 2006; 24(4-6):303-17. PubMed ID: 17119306.
    Abstract:
    PURPOSE: Multimodal spatial neglect manifests itself also in nonvisual modalities such as audition, touch and body representation. Yet, quantitative tests for the diagnosis of nonvisual neglect are still quite rare. The purpose of the present paper was to develop and evaluate a novel, simple and sensitive test for the assessment of body representational neglect (BRN) in patients with left or right cerebral hemispheric lesions. METHODS: The vest test covers the front part of the trunk. The blindfolded subject wears the vest and is instructed to pick up all objects from the 24 pockets of the vest (12 on each side) as quickly as possible using the ipsilesional, nonparetic hand. Two samples of healthy control subjects (each N=25) using either their left or their right hand performed the test in identical way to obtain normative data for patients searching with their left hand (i.e. left hemisphere stroke patients) versus their right hand (i.e. right hemisphere stroke patients). The test can be performed within 5~minutes, even with aphasic or apractic stroke patients. RESULTS: Psychometric evaluations in a sample of 50 patients with unilateral stroke (25 leftsided, 25 rightsided) show high objectivity, high internal consistency (Cronbach's alpha=0.96), good retest-reliability (0.79 after 1 week in neglect patients) and good validity as compared with two other measures of BRN or multimodal neglect. Patient examples show that BRN as assessed with the vest test allows the detection of qualitatively and quantitatively different patterns of BRN, and shows double dissociations from visual neglect and from apraxia in left hemisphere stroke patients. Details of the test including instructions and cut-off values are given for users in the appendix of this article. CONCLUSIONS: In conclusion, the vest test is a sensitive, quick and reliable test for BRN which complements the assessment of visuo- and audiospatial neglect and allows to measure recovery (spontaneous or treatment-induced) in patients with BRN. Furthermore, it can help to improve our knowledge about the multisensory coding of our body and the surrounding space in the human brain.
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