![]() These findings suggest that an online TCD-BCI can achieve reasonable accuracies with an intuitive language task, but with modest throughput. The average information transfer rate was 0.87 bits/min with an average throughput of 0.31 ± 0.12 character/min. The level of agreement between the intended and machine-predicted selections was moderate (κ = 0.60). The system achieved an average specificity and sensitivity of 81.44 ± 8.35 and 82.30 ± 7.39%, respectively. With 10 able-bodied right-handed young adults, the two mental tasks were differentiated online using a Naïve Bayes classification algorithm and a set of time-domain, user-dependent features. Undesired letters or words were bypassed by performing visual tracking, a non-lateralized task. Target letters or words were selected by repetitively rehearsing the spelling while imagining the writing of the intended word, a left-lateralized task. In this paper, an online TCD-BCI system was implemented, bilaterally tracking blood flow velocities in the middle cerebral arteries for system-paced control of a scanning keyboard. The feasibility of a TCD-based BCI system hinges on its online performance. However, TCD-BCI studies to date have exclusively been offline. An emerging brain monitoring modality for BCI development is transcranial Doppler ultrasonography (TCD), which facilitates the tracking of cerebral blood flow velocities associated with mental tasks. 2Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canadaīrain-computer interface (BCI) systems exploit brain activity for generating a control command and may be used by individuals with severe motor disabilities as an alternative means of communication.1Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, Toronto, ON, Canada.Funding is used to send our staff on external education courses to maintain the high levels of scientific expertise required in the complex and rapidly developing field of medical physics, as well as to allow the development of scientific or technical skills.Jie Lu 1,2 Khondaker A. We also have an annual review of staff training needs, aligned to the annual bid for training and education funding. ![]() We hold regular scientific seminars, giving staff a platform to present research or development projects and to feedback on new developments they've come across from the wider scientific community. We've achieved a 100% pass rate for the last two years. Our staff are involved in delivering the Fellow of the Royal College of Radiologists (FRCR) part 1 physics lectures for the Wessex Deanery. ![]() Find out more about the projects we're involved with on our research and development pages. ![]() We help supervise BMedSci and MMedSci medical students carrying out projects in the department or related areas. Several of our staff are named supervisors for PhD projects, and other staff have completed part-time PhDs whilst employed with us. We also hold introductory lectures on medical imaging for the biomedical engineering MSc, and students have the opportunity to work on projects in the department. We contribute to undergraduate and post-graduate teaching programmes at the University of Southampton, and teach on the medical physics option of the BSc/MPhys physics course. Training and teachingĪs well as being accredited to train medical physics and clinical scientific computing candidates on the Scientific Training Programme, our department is accredited to provide clinical science training (ACS route 2) and clinical technologist training. We're also a training centre for the NHS Healthcare Scientist Training Programme. These include laser safety and radiation protection training courses, and transcranial doppler training. Our department is involved in a wide variety of education and training initiatives. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |