Table 3.
The degree of convergence or divergence (source cell number/target cell number) along the chain of hippocampal projections from the dentate granule cells to the subiculum. Bold numbers are statistically different from the value observed in the eastern rock sengi (P-values in parenthesis).
| DG → hilus/CA4 | DG → CA3 | CA3 → CA1 | CA1 → subiculum | |
|---|---|---|---|---|
| Eastern rock sengi (Elephantulus myurus) | 19.6 | 18.4 | 0.29 | 5.8 |
| House mouse (Mus musculus)1 | 24.6 (0.985) | 3.84 (<0.001) | 0.73 (<0.001) | 1.4 (<0.001) |
| Brown rat (Rattus norvegicus)2 | 20.9 (1.000) | 4.8 (<0.001) | 0.78 (<0.001) | 1.1 (<0.001) |
| Harvest mouse (Micromys minutus)3 | 45.5 (<0.001) | 4.4 (<0.001) | 1.1 (<0.001) | 1.4 (<0.001) |
| Dog (Canis lupus familiaris)4 | 24.4 (0.788) | 6.1 (<0.001) | 0.33 (1.000) | 1.4 (<0.001) |
| Domestic pig (Sus scrofa)5 | 6.0 (<0.001) | 6.9 (<0.001) | 0.37 (1.000) | 1.9 (<0.001) |
| Tree shrew (Tupaia glis)6 | 0.73 (<0.001) | 2.1 (<0.001) | ||
| Rhesus monkey (Macaca mulatta)7 | 20.7 (1.000) | 16.4 (1.000) | 0.38 (1.000) | 2.4 (<0.001) |
| Human (Homo sapiens)8 | 11.4 (<0.001) | 6.56 (<0.001) | 0.24 (1.000) | 2.6 (<0.001) |
n = 7, Sources: Fabricius etal., 2008
n = 15, Sources: West etal., 1991; Hosseini-Sharifabad and Nyengaard, 2007; Fitting etal., 2010
n = 5, M.J. West and L. Slomianka, unpublished data
n = 10, Sources: Siwak-Tapp etal., 2008
n = 5, Sources: original data kindly provided by the authors, Holm and West, 1994
n = 11, Sources: Keuker etal., 2004
n = 8, Sources: Keuker etal., 2003a
n = 73, Sources: West and Gundersen, 1990; West, 1993; Simic etal., 1997; Harding etal., 1998; Korbo etal., 2003