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Alternate Stimuli for the Elicitation of Event Related Potentials.
| 题名： | Alternate Stimuli for the Elicitation of Event Related Potentials. |
| 作者： | Jackson, B. V. |
| 关键词： | Electroencephalography, Electrophysiological phenomena, Human machine systems, Led display systems, Visual cortex, Data, Long wavelengths, Measurement, Experimental design, Bands, Brain, Bci(brain-computer interface), Erp(event-related potential), Steady-state visual evoked potential, Visual evoked potential, Ssvep(steady-state visually-evoked potentials), Eeg(electroencephalography) |
| 摘要： | Brain-Computer Interfaces (BCIs) are systems that leverage user-brain activity to identify and perform specific functions. In applications requiring overt visual attention, focusing on visual stimuli with known temporal variation can elicit measurable changes in brain activity. However, elements of BCI applications can be intrusive. This research was designed to determine if Event-Related Potentials (ERPs), to include Steady-State Visually-Evoked Potentials (SSVEPs), could be elicited and interpreted from less obtrusive stimuli. Specifically, this research explores the use of variable frequency and long-wavelength (infrared) stimuli for SSVEP interpretation to explore the application of less obtrusive stimuli for application in BCIs. It was determined that increasing the primary wavelength of visual stimuli into the near infrared portion of the electromagnetic spectrum negatively impacts the observation of ERPs in human subjects. Additionally, the longer primary wavelengths of visual stimuli have a negative impact on the observation of target frequency band powers in SSVEP experiments. However, each of these signals were detected across the majority of participants for Light-Emitting Diodes (LEDs) with center frequencies as high as 770 nm and across some participants and conditions for LEDs with center frequencies as high as 830 nm. |
| 报告类型： | 科技报告 |
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