This study will employ a non-invasive custom-built four-point vertical displacement stimulator. This is used to deliver sinusoidal vibrations at very low amplitudes (0-400 microns) to the tips of the fingers. The forearm of the subject rests on the stimulator, the finger tips are vibrated, and the subject answers questions prompted by a computer monitor about their perception of the stimuli. Research staff may explain questions and prompts in a way that may be better understood by the subjects if the subjects experience any difficulty.
This device will be used to obtain objective psychophysical measurements as subjects undergo treatment. The investigators hope that this study will eventually assist in the long term goal of studying ways to develop diagnostic methods, based on changes in cortical information processing capabilities that occur with neurodevelopmental disorders. This would enable clinicians to more objectively determine prognosis and the best course of intervention for their patients.
This study will consent up to 60 subjects who are have initiated or changed pharmacologic treatment as either a participant in a clinical trial or as a private patient of one of the study doctors. Subjects who are a participant in another clinical trial may be one an active medication or a non-active medication(placebo). Subjects will have 7 visits in this study (w0 prior to initiating new treatment, and 4,8, 26 52,78 and 104 weeks after starting the the new treatment. The latter visits may occur either while the individual is taking the medication or after the individual has stopped treatment (in order to assess persistence of treatment-related changes).
