This article reports on the cases of four medicated Parkinsonian patients who experienced reversal of visuospatial impairments as measured the Clock Drawing Test following treatment with externally applied weak electromagnetic fields of picotesla-range intensity.

R. Sandyk, Reversal of Visuospatial Deficit on the Clock Drawing Test in Parkinson’s Disease Treatment with Weak Electromagnetic Fields, International Journal of Neurosci, 82(3-4), June 1995, p. 255-268.