Table 1.

Subject demographics. Subjects were gender, age and handedness matched. Data are expressed as mean (SEM) unless otherwise indicated. Abbreviations: males (M), females (F), right-handed (R), left-handed (L), Caucasian (C), African American (AA), Asian American (AsA), American Indian (AI), Mixed (M), Chlorpromazine (CPZ).

Parameter	Controls (n = 25)*	Patients (n = 26)#
Age (years)	45.68 (1.19)	45.69 (1.32)
Age of onset (years)		24.25 (2.22)
Duration of illness (years)		20.00 (2.28)
Gender	20 M, 5 F	22 M, 4 F
Handedness‡	23 R, 2 L	21 R, 5 L
Race/Ethnicity	22 C, 1 AA, 1 AsA, 1 M	17 C, 8 AA, 1 AI
Psychiatric Rating§
PANSS Positive		13.22 (1.19)
PANSS Negative		17.44 (1.67)
PANSS General		25.22 (1.45)
PANSS Global		55.89 (3.81)
Medications
CPZ Equivalent		608.80 (75.91)
Anticholinergic		1/26
Anti-anxiety		5/26
Anti-depression		9/26
Mood stabilizer		2/26
Other		7/26

^*Four subjects who did not complete the study are excluded from this count.

^#One subject who did not complete the study is excluded from this count.

^‡Measured using the Edinburgh Handedness Inventory.

^§Data available from 18 (16 M, 2F) schizophrenic patients.