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

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 o...

Full description

Saved in:
Bibliographic Details
Published in:International journal of human-computer interaction 2014-04, Vol.30 (4), p.267-277
Main Authors: Caltenco, Héctor A., Lontis, Eugen R., Bentsen, Bo, Andreasen Struijk, Lotte N. S.
Format: Article
Language:English
Subjects:
Activation
Activation analysis
Computer and Information Science
Computers
Data- och informationsvetenskap (Datateknik)
Human Computer Interaction
Impairment
Motor ability
Människa-datorinteraktion (interaktionsdesign)
Natural Sciences
Naturvetenskap
Pixels
Sensors
Target tracking
Tasks
Tracking
Typing
User interface
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 °C and 51.37 °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.
ISSN:1044-7318
1532-7590
1532-7590
1044-7318
DOI:10.1080/10447318.2013.853637