SSVEP-based BCI for a DMD Patient – A Case Study

Mah, Wai-Lai; Chin, Siau-Shi; Mok, Siew-Ying; Ng, Danny Wee-Kiat; Loh, Ee-Chin; Ramli, Nur Aqlima; Goh, Kim‐Leng; Goh, Sing-Yau

doi:10.1109/csudet47057.2019.9214663

Cited by 2 publications

(2 citation statements)

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“…To enhance the SSVEP responses, white stimuli and black background were used for both types of stimulators. 15,25 The average luminance intensities for the LCD and the LED stimulators were 207 lux and 620 lux respectively, measured using a light meter (LX-101, Lutron Electronic). Figure 1 depicts the BCI systems featuring the two different types of stimulators.…”

Section: Apparatusmentioning

confidence: 99%

“…[10][11][12] While these endeavours have led to some encouraging successes, in many cases, it involved extensive testing and customization of a variety of parameters for individual users. 13,14,15 Learning about individual differences, such as age and gender, as well as the various neurophysiological factors that may influence the signal strength 16 is therefore crucial to simplify the hectic yet frustrating testing procedure. More importantly, this could help to increase the chances to arrive at the best BCIs for individual users.…”

Section: Introductionmentioning

confidence: 99%

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Age-dependent changes in steady-state visual evoked potentials

Chin¹,

Mah²,

Mok³

et al. 2022

NeuroAsia

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Variability in user performance has been a crucial hurdle that prevents the adoption of brain-computer interfaces (BCIs), but the factors that led to the variations were unclear. This study investigates the effect of age on the strength of steady-state visual evoked potentials (SSVEPs) – an important attribute that determines the BCI performance. Ninety-three subjects ranging from six to 78 years old were recruited for the study, and each of them was tested for their SSVEPs in response to flickering lights of five different frequencies presented at random sequences. The results showed that there is a significant correlation between the strength of SSVEP and user age, with weaker SSVEP response registered in older subjects at all stimulation frequencies tested. Further inter-group comparisons indicated that older subjects tended to show more attenuated SSVEP response compared to the younger and the middle-aged subjects, while there is no significant difference in the SSVEP amplitude between the subjects from the younger and the middle-age groups. The SSVEP response was stronger when elicited using light-emitting diode (LED) compared to liquid crystal display (LCD) stimulators. These findings suggest that age as an important factor in BCI performance, and learning about the age-associated changes could provide additional insight into adapting the BCI system to individual users.

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Section: Apparatusmentioning

confidence: 99%