دورية أكاديمية
أعرض في EDS

Contrasting effects of transcranial direct current stimulation on central and peripheral visual fields.

التفاصيل البيبلوغرافية
العنوان: Contrasting effects of transcranial direct current stimulation on central and peripheral visual fields.
المؤلفون: Costa TL; Departamento de Psicologia Experimental, Instituto de Psicologia da Universidade de São Paulo, São Paulo, Brazil, e.thiagocosta@gmail.com., Gualtieri M, Barboni MT, Katayama RK, Boggio PS, Ventura DF
المصدر: Experimental brain research [Exp Brain Res] 2015 May; Vol. 233 (5), pp. 1391-7. Date of Electronic Publication: 2015 Feb 04.
نوع المنشور: Journal Article; Randomized Controlled Trial
اللغة: English
بيانات الدورية: Publisher: Springer Verlag Country of Publication: Germany NLM ID: 0043312 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-1106 (Electronic) Linking ISSN: 00144819 NLM ISO Abbreviation: Exp Brain Res Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Berlin : Springer Verlag
مواضيع طبية MeSH: Transcranial Direct Current Stimulation*, Visual Fields/*physiology, Adult ; Analysis of Variance ; Female ; Humans ; Male ; Single-Blind Method ; Visual Field Tests ; Young Adult
مستخلص: Recent research suggested that transcranial direct current stimulation (tDCS) can affect visual processing and that it can be useful in visual rehabilitation. Nevertheless, there are still few investigations on the subject. tDCS selectivity and the extent of its outcomes on visual perception are still to be assessed. Here, we investigate whether central and peripheral visual fields are equally affected by tDCS. We also tried to reproduce a previous work that has evaluated tDCS effects on the central visual field only (Kraft et al. 207:283-290, 2010). Fifteen healthy subjects participated in this randomized repeated-measure design study and received 1.5-mA anodal, cathodal and sham stimulation in different sessions, while performing 10-2 and 60-4 protocols in an automated perimeter. Anodal tDCS significantly decreased thresholds, but was limited to the most eccentric regions of the visual field measured (60°). This suggests that tDCS might be used for rehabilitation of peripheral visual field losses. We did not replicate the excitatory tDCS effect in the central visual field as previously reported by another group. Instead, we observed a trend toward an inhibitory (yet not statistically significant) effect of anodal tDCS on the central field. This might be explained by methodological differences. These results highlight that although tDCS is a technique with a low focality in the spatial domain, its effects might be highly focal in a functional domain. When taken together with previous findings, this also suggests that tDCS may have a differential effect on different retinotopic areas in the brain.
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تواريخ الأحداث: Date Created: 20150205 Date Completed: 20151208 Latest Revision: 20181113
رمز التحديث: 20231215
DOI: 10.1007/s00221-015-4213-0
PMID: 25650104
قاعدة البيانات: MEDLINE
الوصف
تدمد:1432-1106
DOI:10.1007/s00221-015-4213-0