Clinical and electrophysiological study in a patient surviving from locked-in syndrome.

The results of clinical and electrophysiological investigations in a patient with a locked-in syndrome due to a pontine infarction, mainly on the right side, are presented. EEG showed only slight disturbances, while BAER and SSER revealed response alterations as could be expected from physical examination. BAER revealed altered central conduction after stimulation of either side. After median nerve stimulation on the right side SSER was slightly delayed, while no reproducible cortical response was seen after stimulation on the left side. Our patient survived and showed partial recovery.