Sérgio Ramos

Experimental evidences for visual evoked potentials with stimuli beyond the conscious perception threshold

The Steady State Visual Evoked Potentials (SSVEP), present in ElectroEncephaloGram (EEG) signal, are currently used as a convenient approach to a Brain-Computer Interface (BCI). However, the stimulus frequencies are bellow the Flicker Fusion Frequency (FFF). In this work, the possibility of producing SSVEP for stimulus frequency beyond the FFF is investigated. From our experimental SSVEP results, it is shown that there are consistent evidences to support the hypothesis of non-conscious perception. Finally, their practical implications to both engineering and psychological issues are duly discussed.

Johanson-Blizzard syndrome

1 Full Professor of Otorhinolaryngology Health Sciences Center Federal University of Espirito Santo (UFES). Head of the Specialized Medicine Health Sciences Center Federal University of Espirito Santo (UFES) and Head of the ENT Department Cassiano Antonio de Moraes University Hospital (HUCAM). 2 MD. ENT ABORL-CCF. Preceptor at the ENT Clinic University of Sao Paulo Medical School (FMUSP). 3 MSc in ENT and PhD in Medicine Federal University of Sao Paulo Medical School (EPM-UNIFESP). MD; ENT in Vitoria, ES. 4 MD, Neuropediatrician Cassiano Antonio de Moraes University Hospital (HUCAM). 5 ENT Resident University of Sao Paulo Medical School (FMUSP). Servico de Otorrinolaringologia do Hospital Universitario “Cassiano Antonio de Moraes” Centro de Ciencias da Saude da Universidade Federal do Espirito Santo. Send correspondence to: Prof. Dr. Sergio Ramos Av. Saturnino de Brito 256 Enseada do Sua Vitoria ES 29050-385. Tel. (0xx27) 3345-1600 Fax (0xx27) 3345-0195 Paper submitted to the BJORL-SGP (Publishing Management System – Brazilian Journal of Otorhinolaryngology) on July 24, 2006; and accepted on May 15, 2010. cod. 3295 CASE REPORT Braz J Otorhinolaryngol. 2010;76(6):794. BJORL