Exploring the physiological basis of stochastic resonance in human perception

2014 Fiscal Year Final Research Report

• Project/Area Number: 24700617
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Physical education
• Research Institution: Advanced Telecommunications Research Institute International
• Principal Investigator: AIHARA takatsugu 株式会社国際電気通信基礎技術研究所, 脳情報通信総合研究所, 専任研究員 (10600918)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 確率共振 / 脳波 / 経頭蓋ランダムノイズ刺激 / 経頭蓋磁気刺激

Outline of Final Research Achievements

It is necessary to estimate the noise level in the brain to provide direct evidence that stochastic resonance within the brain can enhance behavioral responses to weak sensory inputs. However, our computer simulations of source current estimation from electroencephalography (EEG) show that it is difficult to accurately estimate it. Then, psychophysical experiments were performed to obtain evidence that transcranial random noise stimulation modulates the noise level in the brain. Results suggest that it does, but more experimental data are necessary to support it. Finally, EEG recordings during transcranial magnetic stimulation (TMS) of 3 nodes of resting state networks were performed. Several TMS-related artifact rejection methods were compared, and whether each network started to oscillate at its own natural frequency just after TMS was applied was examined.

Free Research Field

身体教育学