Summary of odor response classes of PN boutons
| Types of excitatory odor responses | Types of response changes | |||||||
|---|---|---|---|---|---|---|---|---|
| Stimulus | Only ON | Only OFF | ON and OFF | None | Only up | Only down | Both | None |
| CS+ | 39.5 | 3.3 | 9.9 | 47.2 | 14.2 | 33.0 | 7.8 | 45.0 |
| CS- | 40.9 | 2.7 | 12.3 | 43.6 | 18.7 | 31.4 | 5.7 | 44.2 |
| Both | 15.8 | 0.0 | 0.8 | 16.6 | 2.8 | 11.0 | 0.6 | 20.7 |
Types of excitatory odor responses of untrained animals: all 1652 boutons were categorized by their response profiles of (1) only ON responses, (2) only OFF responses, (3) both ON and OFF responses, or (4) no detected responses to CS+ and/or CS- odors. Types of excitatory bouton response changes by learning: all 1652 boutons were categorized by their response profiles of (1) only up-regulated, (2) only down-regulated, (3) both up- and down-regulated, or (4) no detected change to CS+ and/or CS- odors.