Zhilin Zhang, Guoxin Guo, Jian Zhang, Chunlin Li, Qiang Huang, Ritsu Go, Tianyi Yan, Hidenao Fukuyama, Shintaro Funahashi, Jinglong Wu
Recent research has indicated that the mismatch negativity (MMN) is elicited in response to a discernible small change of a somatosensory stimulus applied on the hand. However, the neural mechanism for detecting small change of somatosensory stimulus remains unknown. In the present study, we developed a novel pressure stimulation device using air jet applied on the index finger pad, and determined the just noticeable differences (JNDs) of pressure discrimination for each subject. Using the deviant-standard-reversed oddball paradigm, we analyzed the average dynamic changes in MMN amplitude and changes of evoked spectral power...
February 13, 2019: Biological Psychology