Lohr J B, Caligiuri M P
Psychiatry Service, Department of Veterans Medical Center, San Diego, CA 92161, USA.
Psychiatry Res. 1995 Aug 28;57(3):279-82. doi: 10.1016/0165-1781(95)02725-c.
A century after Kraepelin, clinical scientists still debate whether the major functional psychoses, schizophrenia and bipolar illness, are separate disease entities or fall on opposite ends of a spectrum of severe psychopathology. In a study of control of hand-muscle force, patients with schizophrenia and bipolar affective disorder exhibited opposite asymmetries, with greater right-hand dyscontrol in schizophrenia, and greater left-hand dyscontrol in bipolar disorder. This suggests that there is greater pathological involvement of the dominant hemisphere in schizophrenia and of the non-dominant hemisphere in bipolar disorder.
