Table 3.
Brain Weight, Neuron Number in Somatosensory Barrels and Total Neuron Number in Entorhinal Cortex
| Species | Brain size (mg) | Reference | No. of neurons in a layer 4 barrel/finger representation | Reference | EC no. of neurons | Reference |
|---|---|---|---|---|---|---|
| Shrew | 64 | Naumann et al., 2012 | ∼100 | This study | 1.3 × 105 | Naumann et al., 2012 |
| Mouse | 453 | Williams, 2000 | ∼2,000 (1,035–2,624) | Lee and Woolsey, 1975 | 4 × 105 | Irizzary et al., 1997 |
| Rat | ∼2,000 | Donaldson and Hatai, 1931 | 4,447 ± 439 | Meyer et al., 2010 | 6.8 × 105 | Rapp et al., 2002 |
| Egyptian fruit bat | 2,157 ± 100 | This study | ||||
| Human | 1,320,000 | Blinkow and Glezer, 1968 | ∼1,150,000 | Estimate; this study (see text) | 7–8 × 106 | West and Slomianka, 1998 |