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- Title
Effects of θ High Definition-Transcranial Alternating Current Stimulation in the Anterior Cingulate Cortex on the Dominance of Attention Focus in Standing Postural Control.
- Authors
Sawai, Shun; Murata, Shin; Fujikawa, Shoya; Yamamoto, Ryosuke; Nakano, Hideki
- Abstract
Attention focus affects performance in postural control while standing, and it is divided into internal focus (IF) and external focus (EF). Each individual has a predominant attention focus, and research has revealed that the dominance of attention focus may be an acquired trait. However, the impact of non-invasive brain stimulation on attention-focus dominance remains unexplored in the current literature. Here, we examined the effect of high-definition transcranial alternating current stimulation (HD-tACS) on θ waves in the anterior cingulate cortex (ACC) on standing postural control tasks in an EF condition for IF- and EF-dominant groups. The effect of θ HD-tACS on the ACC differed between IF- and EF-dominant groups, and θ HD-tACS in the IF-dominant group decreased the performance of standing postural control under the EF condition. The forced activation of the ACC with θ HD-tACS may have conversely reduced the activity of brain regions normally activated by the IF-dominant group. Additionally, the activation of ACC prioritized visual information processing and suppressed the superficial sensory processing that is normally potentially prioritized by the IF-dominant group. These results highlight the importance of changing the type of rehabilitation and sports training tasks to account for the individual's dominance of attention focus.
- Subjects
CINGULATE cortex; TRANSCRANIAL alternating current stimulation; ALTERNATING currents; POSTURAL muscles; OPTICAL information processing; BRAIN stimulation; SUPERIOR colliculus
- Publication
Behavioral Sciences (2076-328X), 2023, Vol 13, Issue 6, p477
- ISSN
2076-328X
- Publication type
Article
- DOI
10.3390/bs13060477