Table 1.
Details of the heterogeneous port entry response profiles of all neurons recorded
| Population | Port entries during |
All rats pooled |
Rew. predictive |
Random |
Resp. contingent |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maintenance | ExtinctionEmpty | n | % oftotal(n = 330) | n | % oftotal(n = 88) | n | % oftotal(n = 93) | n | % oftotal(n = 149) | ||
| Sucrose | Empty | ||||||||||
| Reinforcement omission (n = 32/330; 10%) | ↓ | — | ↓ | 22/32 | 7% | 5/88 | 6% | 6/93 | 6% | 11/149 | 7% |
| ↑ | — | ↓ | 7/32 | 2% | 3/88 | 3% | 2/93 | 2% | 2/149 | 1% | |
| ↓ | — | ↑ | 3/32 | 1% | 1/88 | 1% | 0/93 | 0% | 2/149 | 1% | |
| Extinction only (n = 47/330; 14%) | — | — | ↓ | 41/47 | 9% | 12/88 | 14% | 13/93 | 14% | 16/149 | 11% |
| — | — | ↑ | 6/47 | 2% | 3/88 | 3% | 3/93 | 3% | 0/149 | 0% | |
| Maint. only (n = 4/330; 1%) | ↑ | ↑ | — | 3/4 | 1% | 0/88 | 0% | 3/93 | 3% | 0/149 | 0% |
| ↓ | ↓ | — | 1/4 | 0.30% | 0/88 | 0% | 0/93 | 0% | 1/149 | 0.70% | |
| Empty in Maint. (n = 17/330; 5%) | — | ↓ | — | 15/17 | 4.50% | 5/88 | 6% | 2/93 | 2% | 8/149 | 5% |
| — | ↑ | — | 2/17 | 0.60% | 1/88 | 1% | 0/93 | 0% | 1/149 | 0.70% | |
| Empty port (n = 15/330; 5%) | — | ↓ | ↓ | 10/15 | 3% | 2/88 | 2% | 2/93 | 2% | 6/149 | 4% |
| — | ↑ | ↑ | 3/15 | 1% | 1/88 | 1% | 1/93 | 1% | 1/149 | 0.70% | |
| — | ↑ | ↓ | 1/15 | 0.30% | 0/88 | 0% | 0/93 | 0% | 1/149 | 0.70% | |
| — | ↓ | ↑ | 1/15 | 0.30% | 0/88 | 0% | 0/93 | 0% | 1/149 | 0.70% | |
| Sucrose only (n = 50/330; 15%) | ↓ | — | — | 37/50 | 11% | 12/88 | 14% | 11/93 | 12% | 14/149 | 9% |
| ↑ | — | — | 13/50 | 4% | 6/88 | 7% | 7/93 | 8% | 0/149 | 0% | |
| All port entries (n = 31/330; 9%) | ↓ | ↓ | ↓ | 23/31 | 7% | 5/88 | 6% | 5/93 | 5% | 13/149 | 9% |
| ↑ | ↑ | ↑ | 5/31 | 1.60% | 3/88 | 3% | 1/93 | 1% | 1/149 | 0.70% | |
| ↓ | ↓ | ↑ | 1/31 | 0.30% | 0/88 | 0% | 0/93 | 0% | 1/149 | 0.70% | |
| ↓ | ↑ | ↓ | 1/31 | 0.30% | 0/88 | 0% | 1/93 | 1% | 0/149 | 0% | |
| ↑ | ↓ | ↓ | 1/31 | 0.30% | 1/88 | 1% | 0/93 | 0% | 0/149 | 0% | |
| No response (n = 134/330; 41%) | — | — | — | 134/330 | 41% | 28/88 | 32% | 36/93 | 39% | 70/149 | 47% |
Here, each population and subpopulation is detailed with neuron counts and changes in phasic activity in each port entry scenario. Upward arrows indicate an increase in firing during the response window (0–500 ms following port entry; p < 0.01), downward arrows indicate a decrease in phasic activity, and the flat line indicates no change. Categorization by response profile in terms of cell number and proportions are shown for all rats pooled, the reward-predictive cue group, the random cue group, and the response contingent cue group in separate columns. Maint., Maintenance; Rew., reward; Resp, response.