Long-Lasting Enhancement of Visual Perception with Repetitive Noninvasive Transcranial Direct Current Stimulation

We explore whether contrast sensitivity, a main function of the primary visual cortex, can be improved in healthy subjects by repetitive, noninvasive anodal transcranial direct current stimulation

Janina R. Behrens; Antje Kraft; Kerstin Irlbacher; Holger Gerhardt; Manuel C. Olma; Stephan A. Brandt

2017

Scholarcy highlights

  • Sensitivity to contrast is crucial, for vision at dusk and nighttime, and in daylight, e.g., while reading
  • A repeated-measures analysis of variance was performed to compare the development at the follow-up dates, revealing that the tDCSboosted enhancement of contrast perception did not lead to significant differential decline of contrast perception after the stimulation period compared to that in the control group
  • In contrast to the majority of previous studies, we used a more precise method to determine the location of the polarization electrode on the surface using individual MRI data and navigation software
  • We attribute the observation of long-lasting effects to this method and the repetitive transcranial direct current stimulation application
  • Our results suggest that repetitive tDCS over V1 may be a promising neurorehabilitation tool for patients with chronic visual disability occurring after stroke
  • The tDCS effects demonstrated by our study did not require an extensive, time-consuming, and effortful simultaneous visual training paradigm, such as vision restoration therapy
  • This offers an important advantage in the development of rehabilitation programs for older patients who are more severely affected by diseases

Need more features? Save interactive summary cards to your Scholarcy Library.