A simplified mercury switch head-control biofeedback device

A simplified mercury switch head-control device is reported. It is easily duplicated and amenable to quantitation. Advantages include simplicity and easy use at home, in school, or during therapy. Directionality of the feedback signal and visual feedback do not seem necessary to produce benefit. The results in six patients and two controls are consistent with other studies. This is the second study using mercury switches for feedback.

[1]  J. Goodgold.  Letter: H reflex. , 1976, Archives of physical medicine and rehabilitation.

[2]  D. Nunes,et al.  Multielement designs: an alternative to reversal and multiple baseline evaluation strategies. , 1979, Mental retardation.

[3]  D. Halpern,et al.  Training of Control of Head Posture in Children with Cerebral Palsy , 1970, Developmental medicine and child neurology.

[4]  C P Wooldridge,et al.  Head position training with the cerebral palsied child: an application of biofeedback techniques. , 1976, Archives of physical medicine and rehabilitation.

[5]  F. Harris,et al.  Electronic sensory aids as treatment for cerebral-palsied children. Inapproprioception: Part II. , 1974, Physical therapy.