P. N. Leigh

Visuospatial memory deficits at different stages of Parkinson's disease

A. M. Owen, C. Marsden, T. Robbins, 1993, Neuropsychologia.

Hippocampal and neocortical ubiquitin-immunoreactive inclusions in amyotrophic lateral sclerosis with dementia

D. Neary, M. Swash, P. Leigh, 1992, Neuroscience Letters.

Altered cortical activation during a motor task in ALS

Andrew Simmons, A. Simmons, Steven C. R. Williams, 2000, Journal of Neurology.

The validation of El Escorial criteria for the diagnosis of amyotrophic lateral sclerosis: A clinicopathological study

K. Ray Chaudhuri, J. Cavanagh, S. Al-Sarraj, 1995, Journal of the Neurological Sciences.