Phosphene Attributes Depend on Frequency and Intensity of Retinal tACS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11120%2F22%3A43923627" target="_blank" >RIV/00216208:11120/22:43923627 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.33549/physiolres.934887" target="_blank" >https://doi.org/10.33549/physiolres.934887</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.33549/physiolres.934887" target="_blank" >10.33549/physiolres.934887</a>

Result language

angličtina

Original language name

Phosphene Attributes Depend on Frequency and Intensity of Retinal tACS

Original language description

Phosphene is the experience of light without natural visual stimulation. It can be induced by electrical stimulation of the retina, optic nerve or cortex. Induction of phosphenes can be potentially used in assistive devices for the blind. Analysis of phosphene might be beneficial for practical reasons such as adjustment of transcranial alternating current stimulation (tACS) frequency and intensity to eliminate phosphene perception (e.g., tACS studies using verum tACS group and sham group) or, on the contrary, to maximize perception of phosphenes in order to be more able to study their dynamics. In this study, subjective reports of 50 healthy subjects exposed to different intensities of retinal tACS at 4 different frequencies (6, 10, 20 and 40 Hz) were analyzed. The effectiveness of different tACS frequencies in inducing phosphenes was at least 92 %. Subject reported 41 different phosphene types; the most common were light flashes and light circles. Changing the intensity of stimulation often induced a change in phosphene attributes. Up to nine phosphene attributes changed when the tACS intensity was changed. Significant positive correlation was observed between number of a different phosphene types and tACS frequency. Based on these findings, it can be concluded that tACS is effective in eliciting phosphenes whose type and attributes change depending on the frequency and intensity of tACS. The presented results open new questions for future research.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30207 - Ophthalmology

Project

<a href="/en/project/NV15-31538A" target="_blank" >NV15-31538A: Diagnostics and Therapy of Orofacial Pain</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physiological Research

ISSN

0862-8408

e-ISSN

1802-9973

Volume of the periodical

71

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

11

Pages from-to

561-571

UT code for WoS article

000892129900011

EID of the result in the Scopus database

2-s2.0-85138022171