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EEG vs. 시감자극 : 실험방법

EEG vs. 시감자극 : 실험방법. 융합기술 기반 시감 측정시스템의 평가. Steady-State Visual Evoked Potential (SSVEP) Oscillatory EEG activity resulting from repetitive stimulation (flickering) Neurons in human visual cortex synchronize their firing to the frequency of flickering light

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EEG vs. 시감자극 : 실험방법

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  1. EEG vs. 시감자극 : 실험방법

  2. 융합기술 기반 시감 측정시스템의평가 • Steady-State Visual Evoked Potential (SSVEP) • Oscillatory EEG activity resulting from repetitive stimulation (flickering) • Neurons in human visual cortex synchronize their firing to the frequency of flickering light •  EEG responses with same (or multiples of) frequency as the flickering • SSVEP measurement result for • vision stimulation of 16 Hz color vision stimulator : Flickering mode (16 Hz) EEG measurement : bipolar method Oz (active electrode) Cz (reference electrode) Fpz (ground electrode)

  3. EEG vs. 시감 자극 (16 Hz) : raw data 16 Hz flickering 0519 실험, Test1_syncImage.cdf

  4. EEG vs. 시감 자극 (16 Hz) : FFT 16 Hz 시감자극 0519 실험, Test1_syncImage.cdf, cutoff frequency: 12 Hz

  5. 융합기술 기반 시감 측정시스템의평가 Correlation of SSVEP with vision stimulation correlation coefficient : 0.983 correlation coefficient : 0.945 Recording time : 600 s Number of ensemble average : 58 correlation coefficient : 0.978

  6. EEG vs. 시감 자극의 변화 (period 10 s) : raw data 시감자극 변화 Test field 변화 인지시피시험자가 표시 실험0630_VEP_Processed_v2, Red.cdf

  7. EEG vs. 시감 자극의 변화 (period 10 s) 1 s, 99% moving window, 16 Hz 성분 추출(absolute band power), Event: 시감자극 변화, Ensemble averaging # : 58 실험0630_VEP_Processed_v2, Red.cdf

  8. EEG vs. 색 인지 (period 10 s) 1 s, 99% moving window, 16 Hz 성분 추출(absolute band power), Event: Test field 변화 인지, Ensemble averaging # : 58 실험0630_VEP_Processed_v2, Red.cdf

  9. Correlation of EEG with 색 인지 : raw data Trial 1 (시감자극 변화) Trial 2 (moving windows의 overlap 고려 : 1s) VEP Correlation, Red_Corr(0~10.2s).cdf Analysis: Cross Pearson’s Correlation

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