Steele, Catriona

Associate Professor

BA (Toronto), MHSc (Toronto), PhD (Toronto)

Main Appointments

  • Department of Speech-Language Pathology
  • Senior Scientist, Toronto Rehabilitation Institute, University Health Network

Additional Appointments

  • Institute of Biomaterials & Biomedical Engineering
  • Rehabilitation Science Institute
  • Adjunct Scientist, Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital

Contact Information (email)

Research Themes

Research Interests

Dr. Steele is known for her commitment to pursuing theoretically driven research that will underpin clinical interventions for swallowing disorders (dysphagia) with sound empirical evidence. Over the past 6 years she has received particular recognition for her research on tongue movements in swallowing and has developed a reputation as an expert on the use of texture modifications as an intervention for dysphagia.

Dr. Steele is currently using a variety of different technologies (ultrasound, intra-oral manometry, surface EMG, airflow measures, videofluoroscopy, electromagnetic articulography) to explore tongue function and its role in transporting liquids of different consistency in swallowing. Dr. Steele is also a collaborator with Dr. Tom Chau on the development and evaluation of a new, noninvasive device called the Aspirometer, which uses signal processing of dual-axis swallowing accelerometry signals to identify aspiration (the entry of foreign material into the airway during swallowing).  Dr. Steele holds research funding from the National Institutes of Health in the United States, and a Canadian Institutes of Health Research New Investigator Award.

Select Publications

Damouras, S., Steele, C. & Chau, T. (2010). An on-line swallow detection algorithm based on the quadratic variation of dual-axis accelerometry. IEEE Transactions on Signal Processing, 58(6), 3352-3359.

Hanna, F., Molfenter, S. M., Cliffe, R. E., Chau, T. & Steele, C. M.(2010). Anthropometric and demographic correlates of dual-axis swallowing accelerometry signal characteristics: A canonical correlation analysis. Dysphagia, 25(2) 94-103, DOI 10.1007/s00455-009-9229-9

Lee, J., Sejdić, E., Steele, C. M. & Chau, T. (2010). Effects of liquid stimulus differences on dual-axis swallowing accelerometry signals in a healthy population. Biomedical Engineering Online Editorial, 9:7, doi:10.1186/1475-925X-9-7.

Molfenter, S. M. & Steele, C. M. (2010). Physiological Variability in the Deglutition Literature: Hyoid and Laryngeal Kinematics. Dysphagia, Online First, DOI 10.1007/s00455-010-9309-x.

Orovic, I., Stankovic, S., Chau, T., Steele, C. & Sejdić, E. (2010). Time-frequency analysis and Hermite projection method applied to swallowing accelerometry signals. EURASIP Journal on Advances in Signal Processing, 2010, Article ID 323125. DOI: 10.1155/2010/323125.

Sejdić, E. Steele, C. M. & Chau, T. (2010). Scaling analysis of dual-axis cervical accelerometry signals. Computer Methods and Programs in Biomedicine.

Sejdić, E. Steele, C. M. & Chau, T. (2010, in press). Understanding the statistical persistence of dual-axis swallowing accelerometry signals. Computers in Biology and Medicine. Manuscript Number: CBM-D-10-00160R1.

Sejdić, E., Falk, T., Steele, C. M. & Chau, T. (2010). Vocalization Removal for Improved Automatic Segmentation of Dual-axis Swallowing Accelerometry Signals. Medical Engineering & Physics, 32, 668–672. DOI: 10.1016/j.medengphy.2010.04.008.

Sejdić, E., Komisar, V., Steele, C. M. & Chau, T. (2010). Baseline characteristics of dual-axis cervical accelerometry signals. Annals of Biomedical Engineering, 38(3),1048-1059. DOI: 10.1007/s10439-009-9874-z.

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