Purchase this article with an account.
Gianluca Campana, Rebecca Camilleri, Beatrice Moret, Andrea Pavan; Opposed effects of high- vs. low-frequency transcranial random noise stimulation on visual motion adaptation . Journal of Vision 2016;16(12):1187. doi: 10.1167/16.12.1187.
Download citation file:
© 2017 Association for Research in Vision and Ophthalmology.
Transcranial random noise stimulation (tRNS) is a recent neuro-modulation technique whose effects at both behavioural and neural level are still debated. Here we exploited the well-known phenomenon of motion aftereffect (MAE) in order to investigate the effects of high- vs. low-frequency tRNS on motion adaptation and recovery. Participants were asked to evaluate MAE duration following the exposure of a circular rotating and expanding grating for 30 s, while being stimulated with either sham or tRNS across different blocks. Different groups were administered with either high- or low-frequency tRNS. Stimulation sites were either bilateral hMT+, early visual areas or frontal areas. Results showed that, whereas no effects on MAE duration were produced by stimulation of early visual areas or frontal areas, high-frequency tRNS caused a significant decrease in MAE duration whereas low-frequency tRNS caused a significant corresponding increase in MAE duration. These data indicate that high- vs. low-frequency tRNS has opposed effects on the unbalance, created by adaptation, between neurons tuned to opposite motion directions, and thus on neuronal excitability
Meeting abstract presented at VSS 2016
This PDF is available to Subscribers Only