Intrinsic neural activities co-varied with forthcoming behavioral performance

Oscillation is an intrinsic property of neuron activity. Rich but silent information embedded in intrinsic nerual activities remains to be investigated. To probe the underlying information convey in resting state, we adopted several tasks, including visual working memory, rubber hand illusion and sychroneous judgment task, and multi-model neuroimaging techniques to probe the hidden information. Our main findings suggesteed that the state of alpha activity preceding the target stimuli strongly correlateswith the performance of the following visual WM performance. Furthermore, such correlation could be reversed by applying tDCS selectively enhanced/suppressed corresponding alpha oscillations. In sum, investigating the hidden information in intrinsic neural activities is critical to uncover general rules of how brain works.

References: 

Hsu, T.Y., Tseng, P., Liang, W.K., Cheng, S.K., Juan, C.H. (2014). Transcranial direct current stimulation over right posterior parietal cortex changes prestimulus alpha oscillation in visual short-term memory task. Neuroimage, 98, 306-313.

Hsu, T.Y., Juan, C.H., Tseng, P. (2016) Individual Differences and State-dependent Responses in Transcranial Direct Current Stimulation. Frontiers in Human Neuroscience

Juan, C.H.., Tseng, P., Hsu, T.Y. (2017) Elucidating and modulating the neural correlates of visuospatial working memory via noninvasive brain stimulation. Current Directions in Psychological Science. 26(2), 165-173.

Tseng, L.Y., Huang, I.W., Hsu T.Y. The temporal structure within individuals affected the processing of subjective responses in a simultaneous judgment task (in preparation).