Clinical Study

Disrupted Central Inhibition after Transcranial Magnetic Stimulation of Motor Cortex in Schizophrenia with Long-Term Antipsychotic Treatment

Table 2

The results of the TMS measurements and significant ( : probability) differences in the subjects with schizophrenia compared to controls.

Group Controls Total CA AA
Number91165
Site of stim.ADM ADMADMADM
(sd) (sd) (sd) (sd)

Nondominant body side

MCT 21.5 (1.4)21.2 (1.8)20.7 (1.8)21.8 (1.6)
CMCT 6.6 (1.2) 6.5 (1.5)6.1 (1.3)7.0 (1.6)
CSP
 First duration104.2 (59.2)101.8 (5.7)72.0 (57.2)137.60 (85.6)
 Total duration83.1 (57.8)166.9 (76.7)97.3 (81.6)169.4 (102.0)
 Total number1.2 (0.4)2.1 (0.9)2.17 (1.17)2.0 (0.7)
 CSP latency56.0 (7.6)53.2 (6.2)54.5 (6.6)51.6 (6.1)
Site of stim. TA TATATA
MCT28.9 (1.5)29.9 (2.3)29.0 (2.4)31.1 (1.6)
CMCT11.7 (1.5)12.8 (1.6)12.6 (1.2)12.9 (1.5)
CSP
 First duration60.3 (47.8)88.8 (67.2)48.3 (10.6)137.4 (75.7)
 Total duration73.9 (58.0)138.7 (101.8)48.3 (10.6)179.4 (88.6)
 Total number1.3 (0.5)1.4 (0.5)1.0 (0.0)1.8 (0.5)
 CSP latency 63.8 (10.8)67.3 (7.3)64.8 (8.8)70.2 (4.1)

Dominant body side

MCT 21.8 (1.6)21.4 (1.7)20.9 (1.9)21.9 (1.4)
CMCT 6.9 (1.5)6.5 (1.3)6.0 (1.5)7.0 (1.1)
CSP
 First duration83.1 (57.8)140.1 (79.7)137.2 (91.6)143.6 (73.3)
 Total duration106.0 (60.6)130.1 (94.4)166.8 (79.4)167.0 (82.8)
 Total number1.0 (0.0)1.8 (0.6)2.0 (0.6) 1.6 (0.6)
 CSP latency56.6 (7.0)54.9 (9.4)56.2 (10.7)53.4 (8.6)
Site of stim.TATATATA
MCT29.5 (2.1)29.0 (4.2)27.5 (5.0)30.9 (2.1)
CMCT12.2 (1.5)12.0 (3.7)11.0 (4.9)13.2 (1.3)
CSP
 First duration71.2 (51.7)96.3 (59.0)73.2 (37.5)124.0 (72.1)
 Total duration67.1 (53.3)107.9 (88.8)87.8 (59.3)199.8 (113.9)
 Total number1.1 (0.3)1.7 (0.6)1.3 (0.5)2.2 (0.5)
 CSP latency 68.0 (8.0)69.1 (8.8)67.0 (9.5)71.6 (8.2)

Mean: ; sd: standard deviation; MCT: motor conduction time; CMCT: central motor conduction time; CSP: central silent period; ADM: abductor digiti minimi and TA: tibialis anterior muscles; total: all subjects with schizophrenia; CA: users of conventional antipsychotics; AA: users of atypical antipsychotics; time values are means in milliseconds, : number of subjects.