Untrained BDA in lateral BPN (animals n = 8) | Pseudoconditioned BDA in lateral BPN (animals n = 5) | Conditioned BDA in medial BPN (animals n = 5) | Conditioned BDA in lateral BPN (animals n = 12) | |
---|---|---|---|---|
Mean ± SEM number of BDA-labeled varicosities in CN | ||||
Bilateral | ||||
CN | 481 ± 138 | 621 ± 158 | 92 ± 36 | 4463 ± 1314 |
Lateral CN | 285 ± 86 | 273 ± 78 | 52 ± 14 | 1980 ± 547 |
Interposed CN | 189 ± 59 | 307 ± 93 | 37 ± 26 | 2000 ± 606 |
PIN | 105 ± 45 | 286 ± 93 | 17 ± 12 | 1040 ± 303 |
AIN | 85 ± 36 | 21 ± 10 | 19 ± 14 | 960 ± 322 |
DLH | 30 ± 18 | 6 ± 3 | 11 ± 8 | 391 ± 149 |
Medial CN | 7 ± 2 | 41 ± 30 | 0 ± 0 | 483 ± 199 |
Left CN | ||||
CN | 343 ± 98 | 502 ± 140 | 71 ± 31 | 1676 ± 362 |
Lateral CN | 185 ± 52 | 218 ± 61 | 42 ± 11 | 678 ± 158 |
Interposed CN | 151 ± 52 | 245 ± 92 | 26 ± 20 | 722 ± 147 |
PIN | 82 ± 36 | 266 ± 94 | 14 ± 13 | 425 ± 107 |
AIN | 70 ± 37 | 19 ± 11 | 12 ± 8 | 297 ± 73 |
DLH | 22 ± 17 | 6 ± 3 | 6 ± 4 | 136 ± 43 |
Medial CN | 7 ± 2 | 40 ± 31 | 0 ± 0 | 266 ± 111 |
Right CN | ||||
CN | 138 ± 52 | 118 ± 33 | 21 ± 9 | 2787 ± 976 |
Lateral CN | 100 ± 46 | 55 ± 18 | 10 ± 8 | 1292 ± 422 |
Interposed CN | 38 ± 14 | 62 ± 31 | 11 ± 6 | 1277 ± 473 |
PIN | 23 ± 11 | 60 ± 29 | 3 ± 2 | 615 ± 220 |
AIN | 15 ± 10 | 2 ± 1 | 8 ± 6 | 663 ± 266 |
DLH | 8 ± 7 | 1 ± 1 | 5 ± 4 | 256 ± 112 |
Medial CN | 0 ± 0 | 1 ± 1 | 0 ± 0 | 218 ± 91 |
Mean ± SEM number of BDA-labeled fibers in MCP | ||||
Bilateral MCP | 120 ± 30 | 81 ± 17 | 54 ± 19 | 224 ± 44 |
Left MCP | 108 ± 27 | 69 ± 15 | 49 ± 17 | 155 ± 29 |
Right MCP | 12 ± 4 | 12 ± 4 | 5 ± 2 | 59 ± 18 |
Mean ± SEM number of labeled varicosities in the specified regions of the cerebellar nuclei (CN) (top) and number of labeled mossy fibers in the MCP (bottom) per experimental group. In all groups, BDA was injected in the right BPN. Note that, in untrained animals (n = 8), pseudoconditioned animals (n = 5), and conditioned animals with BDA injected in the medial BPN (n = 5), most labeled varicosities were found in the LCN and PIN. In these groups, labeled varicosities in the DLH region are extremely sparse. In conditioned animals with BDA injected in the lateral BPN, there is a widespread increase in varicosities.