Table 1.
Stimulation parameters, weight and VTA/NAcc overlap in mm3 over time
| Initial | 12 months | 14 months | 15 months | 18 months | 24 months | |||||||
| Stimulation parameters | ||||||||||||
| Amplitude (mA) | 5.5 | 5.5 | 4.5 | 4.7 | 5 | 0 | ||||||
| Frequency (Hz) |
204 | 204 | 204 | 204 | 204 | 0 | ||||||
| Pulse width (µs) |
350 | 350 | 350 | 350 | 350 | 0 | ||||||
| VTA/NAcc overlap (mm3) | Right | Left | Right | Left | Right | Left | Right | Left | Right | Left | Right | Left |
| 98.1 | 125.7 | 98.1 | 125.7 | 75.1 | 92.2 | 79.6 | 99.1 | 86.5 | 1090 | 0 | 0 | |
| Weight (kg) | 32 | 47 | 47 | 47 | 47 | 42 | ||||||
VTA/NAcc overlap was calculated using the FastField software.7
NAcc, nucleus accumbens; VTA, volumes of tissue activated.