Relationship between excitatory and inhibitory mPFC-evoked responses in VTA dopamine and nondopamine neurons recorded during the active period
| Dopamine | Nondopamine | |||
|---|---|---|---|---|
| Number | Percentage | Number | Percentage | |
| SLE-all | 55 | 27.6% | 12 | 31.6% |
| SLE followed by Inh | 38 | 19.1% | 7 | 18.4% |
| SLI-all | 27 | 13.6% | 10 | 26.3% |
| SLI followed by Exc | 7 | 3.5% | 1 | 2.6% |
| LLE-all | 12 | 6.0% | 0 | 0.0% |
| LLE followed by Inh | 5 | 2.5% | 0 | 0.0% |
| LLI-all | 43 | 21.6% | 5 | 13.2% |
| LLI followed by Exc | 13 | 6.5% | 1 | 2.6% |
These neurons are a subset of the 199 and 38 mPFC-responsive DA and non-DA neurons, respectively, that showed consistent response patterns across multiple stimulation intensities (DA n = 137, non-DA n = 27). Note that the neurons in the “followed by” categories are included in the corresponding “all” categories. Percentages are based on total responsive neurons (199 or 38). Additional neurons (described in text) responded differentially depending on stimulation intensity.