2017
DOI: 10.3389/fncel.2017.00238
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Abstract: Understanding processes performed by an intact visual cortex as the basis for developing methods that enhance or restore visual perception is of great interest to both researchers and medical practitioners. Here, we explore whether contrast sensitivity, a main function of the primary visual cortex (V1), can be improved in healthy subjects by repetitive, noninvasive anodal transcranial direct current stimulation (tDCS). Contrast perception was measured via threshold perimetry directly before and after intervent… Show more

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Cited by 75 publications
(17 citation statements)
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“…Anatomical correspondence between the target region and V1 was confirmed by a navigated stimulation system (SofTaxic optically-tracked by EMS, Italy). Tridimensional space positions of the head and electrode were reproduced on the computer screen in relation to an average brain anatomy based on a 3D realistic MR-constructed brain model: in accordance with previous articles, the lower horizontal border of the electrode was marked by a scalp point superficial to the tentorium cerebelli, while the medial vertical one corresponded to a scalp point superficial to the brain location 1 cm lateral to the interhemispheric falx cerebri (Olma et al, 2013 ; Behrens et al, 2017 ).…”
Section: Methodssupporting
confidence: 55%
“…Anatomical correspondence between the target region and V1 was confirmed by a navigated stimulation system (SofTaxic optically-tracked by EMS, Italy). Tridimensional space positions of the head and electrode were reproduced on the computer screen in relation to an average brain anatomy based on a 3D realistic MR-constructed brain model: in accordance with previous articles, the lower horizontal border of the electrode was marked by a scalp point superficial to the tentorium cerebelli, while the medial vertical one corresponded to a scalp point superficial to the brain location 1 cm lateral to the interhemispheric falx cerebri (Olma et al, 2013 ; Behrens et al, 2017 ).…”
Section: Methodssupporting
confidence: 55%
“…Finally, this study demonstrates only an acute effect of a-tDCS on lateral inhibition. The next stage in the development of this research area will be to study the possibility of long-lasting effects, perhaps by administering multiple a-tDCS sessions [48,49] and/or combining a-tDCS with perceptual learning [50].…”
Section: Discussionmentioning
confidence: 99%
“…The most used of these protocols are: transcranial direct current (tDCS), alternating (tACS) and random noise (tRNS) stimulation. Whereas tACS has been suggested to be suitable for interacting with endogenous brain oscillations 2529 , tDCS, and tRNS have become increasingly popular as tools to induce neural modulation in the visual system 30–33 . With tDCS that is a constant current, in general, the anodal electrode is associated with an increase in excitability, while an inhibitory effect is observed with the cathodal electrode 34 .…”
Section: Introductionmentioning
confidence: 99%