TABLE 2.
Volume of the Brain, Amygdala, and Main Amygdala Nuclei in the Rat, Monkey, and Human
| Mean (mm3)
|
Relative2 (%)
|
Ratio
|
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Rat | Monkey | Human1 | R | M | H | M/R | H/M | H/R | |
| Brain3 | 994 | 52,360 | — | — | — | — | 53 | — | — |
| SD | 110 | 4,875 | — | ||||||
| Amygdala | 10.62 | 192.60 | 1,416.20 | 100 | 100 | 100 | 18 | 7 | 133 |
| SD | 1.02 | 6.26 | 132.49 | ||||||
| Lateral | 1.19 | 38.40 | 455.63 | 11 | 20 | 32 | 32 | 12 | 382 |
| SD | 0.10 | 3.57 | 58.62 | ||||||
| Basal | 1.20 | 47.15 | — | 11 | 24 | — | 39 | — | — |
| SD | 0.06 | 2.67 | — | ||||||
| Basal + Paralaminar | — | 55.98 | 362.33 | — | 29 | 26 | — | 6 | 302 |
| SD | — | 3.36 | 29.22 | ||||||
| Accessory Basal | 0.63 | 24.38 | 157.00 | 6 | 13 | 11 | 39 | 6 | 251 |
| SD | 0.07 | 2.14 | 18.77 | ||||||
| Central | 1.00 | 8.15 | 33.73 | 9 | 4 | 2 | 8 | 4 | 34 |
| SD | 0.14 | 1.44 | 2.84 | ||||||
| Medial | 1.28 | 5.42 | — | 12 | 3 | — | 4 | — | — |
| SD | 0.23 | 0.50 | — | ||||||
| Paralaminar | — | 8.84 | — | — | 5 | — | — | — | — |
| SD | — | 0.90 | — | ||||||
| Remaining4 | 6.60 | 65.70 | 407.53 | 62 | 34 | 29 | 10 | 6 | 62 |
| SD | 0.90 | 14.17 | 40.89 | ||||||
H: human ; M: monkey ; R: rat.
1
Data reported from Schumann and Amaral (2005).
2
Refers to the relative percentage of volume occupied by each nucleus in the amygdala. Amygdala volume equals to 100%.
3
Refers to the volume of the telencephalon and diencephalon bilaterally.
4
Remaining contains the medial nucleus, intercalated nuclei, anterior amygdaloid area, nucleus of the lateral olfactory tract, anterior cortical nucleus, periamygdaloid cortex, posterior cortical nucleus, amygdalo-hippocampal area and bed nucleus of the accessory olfactory tract (in rat).