A Hybrid Brain-Computer Interface for Real-Life Meal-Assist

Title
A Hybrid Brain-Computer Interface for Real-Life Meal-Assist
Authors
김래현박상인하지현임창환
Keywords
meal-assist robot; brain-computer interface; electroencephalogram; Steady-state visual evoked potential; eye-blink
Issue Date
2021-07
Publisher
Sensors
Citation
VOL 21, NO 4578
Abstract
Assistant devices such as meal-assist robots aid individuals with disabilities and support the elderly in performing daily activities. However, existing meal-assist robots are inconvenient to operate due to non-intuitive user interfaces, requiring additional time and effort. Thus, we developed a hybrid brain?computer interface-based meal-assist robot system following three features that can be measured using scalp electrodes for electroencephalography. The following three procedures comprise a single meal cycle. (1) Triple eye-blinks (EBs) from the prefrontal channel were treated as activation for initiating the cycle. (2) Steady-state visual evoked potentials (SSVEPs) from occipital channels were used to select the food per the user’s intention. (3) Electromyograms (EMGs) were recorded from temporal channels as the users chewed the food to mark the end of a cycle and indicate readiness for starting the following meal. The accuracy, information transfer rate, and false positive rate during experiments on five subjects were as follows: accuracy (EBs/SSVEPs/EMGs) (%): (94.67/83.33/97.33); FPR (EBs/EMGs) (times/min): (0.11/0.08); ITR (SSVEPs) (bit/min): 20.41. These results revealed the feasibility of this assistive system. The proposed system allows users to eat on their own more naturally. Furthermore, it can increase the self-esteem of disabled and elderly peeople and enhance their quality of life.
URI
http://pubs.kist.re.kr/handle/201004/73367
ISSN
1424-8220
Appears in Collections:
KIST Publication > Article
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