The Impact of Function Location on Typing and Pointing Tasks With an Intraoral Tongue-Computer Interface

Caltenco, HéctorLund University,Lunds universitet,Certec - Rehabiliteringsteknik och Design,Institutionen för designvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Certec - Rehabilitation Engineering and Design,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH (författare)

Intraoral target (typing) and on-screen target (pointing/tracking) selection tasks were performed by 10 participants during 3 consecutive day sessions. Tasks were performed using 2 different intraoral sensor layouts. Reduction of undesired sensor activations while speaking as well as the influence of intraoral temperature variation on the signals of the intraoral interface was investigated. Results showed that intraoral target selection tasks were performed better when the respective sensor was located in the anterior area of the palate, reaching 78 and 16 activations per minute for repetitive and "unordered" sequences, respectively. Virtual target pointing and tracking tasks, of circles of 50, 70, and 100 pixels diameter, showed no significant difference in performance, reaching average pointing throughputs of 0.62 to 0.72 bits per second and relative time on target of 34% to 60%. Speaking tasks caused an average of 10 to 31 involuntary activations per minute in the anterior part of the palate. Intraoral temperature variation between 11.87 degrees C and 51.37 degrees C affected the sensor signal baseline in a range from -25.34% to 48.31%. Results from this study provide key design considerations to further increase the efficiency of tongue-computer interfaces for individuals with upper-limb mobility impairments.

Lontis, Eugen R. (författare)
Bentsen, Bo (författare)
Struijk, Lotte N. S. Andreasen (författare)
Certec - Rehabiliteringsteknik och DesignInstitutionen för designvetenskaper (creator_code:org_t)

Ingår i:International Journal of Human-Computer Interaction: Informa UK Limited30:4, s. 267-2771532-75901044-7318

Av författaren/redakt...: Caltenco, Héctor; Lontis, Eugen R.; Bentsen, Bo; Struijk, Lotte N ...

Om ämnet

NATURVETENSKAP: NATURVETENSKAP; och Data och informa ...; och Människa datorin ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.