Table 2.
The number of choices participants made for smoked cocaine by three repetitive transcranial magnetic stimulation (rTMS) groups (Sham, low frequency, or high frequency treatment) on cocaine self-administration sessions.
| High frequency | Low frequency | Sham | |
|---|---|---|---|
| Mean (SD) | |||
| Choices for cocaine | |||
| Session 1 | 3.83 (4.0) | 4.7 (3.3) | 4.8 (3.8) |
| Session 2 | 5.0 (2.5) | 6.5 (2.7) | 5.0 (3.9) |
| Session 3 | 1.8 (1.9)* | 5.5 (3.5) | 4.7 (4.0) |
| Break point | |||
| Session 1 | 1,333.33 (1,608.31) | 1,700 (1,275.93) | 1,766.67 (1,477.39) |
| Session 2 | 1,800 (1,011.93) | 2,400 (1,095.45) | 1,833.33 (1,488.17) |
| Session 3 | 600 (704.27) | 2,033.33 (1,341.14) | 1,733.33 (1,521.40) |
Session 1 is the baseline (pre-rTMS session), session 2 followed 4 days of rTMS, and session 3 occurred following 13 days of rTMS. Treatment by session interaction with rTMS group is significant [F(2, 15) = 5.36, p = 0.02].
*Session 2 compared to session 3, p = 0.03.