Human factors engineering and system design are critical elements in the ne
wly developing field of telerehabilitation. Telerehabilitation is the remot
e delivery of rehabilitative services such as monitoring, training, and lon
g-term care of persons with disabilities using telecommunications technolog
y. This paper describes projects at the Rehabilitation Engineering Research
Center (RERC) on Telerehabilitation in the context of three conceptual mod
els: telecounseling and training, telemonitoring and assessment, and teleth
erapy. Issues pertaining to human factors engineering design are identified
, and ongoing challenges are discussed.