Young | Aged | P-value | |
---|---|---|---|
Numerical density, NV (synapses ×106/mm3) | |||
All synapses | 598 ± 38 | 467 ± 18 | 0.002 |
Asymmetric | 416 ± 36 | 369 ± 21 | 0.20 |
Axospinous | 280 ± 25 | 231 ± 16 | 0.09 |
Axodendritic | 100 ± 10 | 97 ± 10 | 0.85 |
Symmetric | 186 ± 21 | 106 ± 6 | 0.0003 |
Axospinous | 88 ± 12 | 50 ± 4 | 0.002 |
Axodendritic | 88 ± 14 | 41 ± 4 | 0.001 |
Synapse profile length (µm) | |||
Asymmetric (all) | 0.34 ± 0.01 | 0.36 ± 0.01 | 0.08 |
Axospinous | 0.33 ± 0.01 | 0.36 ± 0.01 | 0.06 |
Axodendritic | 0.34 ± 0.02 | 0.35 ± 0.02 | 0.61 |
Symmetric (all) | 0.29 ± 0.01 | 0.33 ± 0.02 | 0.06 |
Axospinous | 0.28 ± 0.01 | 0.31 ± 0.01 | 0.15 |
Axodendritic | 0.29 ± 0.02 | 0.35 ± 0.02 | 0.03 |
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P-values that are statistically significant (less than 0.05) are indicated in italics.