1. Roy, E. A. Beyond the reflex: Implications of higher cortical control of behaviour for models of motor behaviour and rehabilitation. Invited address to the Quebec Physiotherapy Association, Quebec City, May, 1978.
2. Roy, E. A. Cerebral substrates of action: Implications for models of motor behaviour and rehabilitation. Paper read at the annual meeting of North American Society for the Psychology of Sport and Physical Activity, Toronto, November, 1978.
3. Roy, E. A. Apraxia: Bases and research. Invited lecture, Neurology Section, American Physical Therapy Association, Reno, Nevada, February, 1981.
4. Is ideamotor apraxia the outcome of damage to well-defined regions of the left hemisphere?;Basso;Journal of Neurology, Neurosurgery and Psychiatry,1980
5. The emergence of symbols: Ontogeny and phylogeny;Bates,1979