Feasibility of Vibrotactile P50 Sensory-Gating Assessment Using Portable EEG

Portable vibrotactile sensory-gating using EEG recorded P50 responses shows S2/S1 attenuation comparable to auditory double-click in 15 healthy adults (S2/S1: 0.524 vs 0.521).

• Why it matters: Auditory P50 sensory-gating tasks add unavoidable auditory load and are hard to deploy outside controlled labs, limiting ecological monitoring and real-world use.
• What they did: Fifteen healthy adults completed within-subject auditory and vibrotactile paired-stimulus conditions while recording EEG with a 32-channel Emotiv EPOC Flex system, then computed conventional P50 sensory-gating metrics for direct modality comparison.
• The result: Vibrotactile and auditory conditions had nearly identical mean S2/S1 ratios (0.521 ± 0.041 vs 0.524 ± 0.064), with no significant paired difference (0.0029; 95% CI, -0.0221 to 0.0279; t(14) = 0.249; p = 0.807; dz = 0.064), supporting further evaluation of portable vibrotactile P50 measurement.

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