| Literature DB >> 3716211 |
M Marx, I Bodis-Wollner, P Bobak, C Harnois, L Mylin, M Yahr.
Abstract
We recorded steady-state (4.19 and 8.41 Hz) VEPs in 17 Parkinson's Disease (PD) patients and 18 control observers using on-off temporal modulation of a 2.3 c/deg sinusoidal grating. With 4.19 Hz, 20 out of 33 PD patient eyes had abnormal VEPs. However, only 8 of 33 eyes were abnormal with 8.41 Hz. "Routine" (counterphase) transient VEPs revealed delayed VEPs for only 7 out of 24 eyes of the patients. These findings suggest an "input" temporal frequency-dependent abnormality in the foveal pathway.Entities:
Mesh:
Year: 1986 PMID: 3716211 DOI: 10.1016/0042-6989(86)90080-5
Source DB: PubMed Journal: Vision Res ISSN: 0042-6989 Impact factor: 1.886