11 research outputs found
Comparison Among Ambiguous Virtual Keyboards For People With Severe Motor Disabilities
This paper presents an exhaustive study on the
different topologies of ambiguous soft keyboards,
analyzing the text entry average time per
character and the average number of user inputs
necessary for its creation. Various topologies and
design criteria are investigated. In addition, an
analytical model is also proposed. This model
allows one to compare among different topologies
and estimate the sensitivity that different
keyboards offer when compared with dictionary
hit rates. It has been found that ambiguous
keyboards, with six keys, are better to us
Interaction Paradigms for Brain-Body Interfaces for Computer Users with Brain Injuries
In comparison to all types of injury, those to the brain are among the most likely to
result in death or permanent disability. Some of these brain-injured people cannot
communicate, recreate, or control their environment due to severe motor impairment.
This group of individuals with severe head injury have received limited help from
assistive technology. Brain-Computer Interfaces have opened up a spectrum of assistive
technologies, which are particularly appropriate for people with traumatic brain injury,
especially those who suffer from âlocked-inâ syndrome. The research challenge here is
to develop novel interaction paradigms that suit brain-injured individuals, who could
then use it for everyday communications. The developed interaction paradigms should
require minimum training, reconfigurable and minimum effort to use.
This thesis reports on the development of novel interaction paradigms for Brain-Body
Interfaces to help brain-injured people to communicate better, recreate and control their
environment using computers despite the severity of their brain injury. The
investigation was carried out in three phases. Phase one was an exploratory study where
a first novel interaction paradigm was developed and evaluated with able-bodied and
disabled participants. Results obtained were fed into the next phase of the investigation.
Phase two was carried out with able participants who acted as development group for
the second novel interaction paradigm. This second novel interaction paradigm was
evaluated with non-verbal participants with severe brain injury in phase three. An
iterative design research methodology was chosen to develop the interaction paradigms.
A non-invasive assistive technology device named Cyberlinkâą was chosen as the
Brain-Body Interface. This research improved previous work in this area by developing
new interaction paradigms of personalised tiling and discrete acceleration in Brain-
Body Interfaces. The research hypothesis of this study âthat the performance of the
Brain-Body Interface can be improved by the use of novel interaction paradigmsâ was
successfully demonstrated
Interaction paradigms for brain-body interfaces for computer users with brain injuries
In comparison to all types of injury, those to the brain are among the most likely to result in death or permanent disability. Some of these brain-injured people cannot communicate, recreate, or control their environment due to severe motor impairment. This group of individuals with severe head injury have received limited help from assistive technology. Brain-Computer Interfaces have opened up a spectrum of assistive technologies, which are particularly appropriate for people with traumatic brain injury, especially those who suffer from âlocked-inâ syndrome. The research challenge here is to develop novel interaction paradigms that suit brain-injured individuals, who could then use it for everyday communications. The developed interaction paradigms should require minimum training, reconfigurable and minimum effort to use. This thesis reports on the development of novel interaction paradigms for Brain-Body Interfaces to help brain-injured people to communicate better, recreate and control their environment using computers despite the severity of their brain injury. The investigation was carried out in three phases. Phase one was an exploratory study where a first novel interaction paradigm was developed and evaluated with able-bodied and disabled participants. Results obtained were fed into the next phase of the investigation. Phase two was carried out with able participants who acted as development group for the second novel interaction paradigm. This second novel interaction paradigm was evaluated with non-verbal participants with severe brain injury in phase three. An iterative design research methodology was chosen to develop the interaction paradigms. A non-invasive assistive technology device named Cyberlinkâą was chosen as the Brain-Body Interface. This research improved previous work in this area by developing new interaction paradigms of personalised tiling and discrete acceleration in Brain- Body Interfaces. The research hypothesis of this study âthat the performance of the Brain-Body Interface can be improved by the use of novel interaction paradigmsâ was successfully demonstrated.EThOS - Electronic Theses Online ServiceGBUnited Kingdo