Descriptors
The human brain development timeline is easier to understand when the data is organized into charts and images however there are discrepancies between researchers about the exact time frame of each developmental stage. The images and charts provided on this page are approximate. Multiple charts and images are provided for disambiguation.
| Day | Event | Reference |
|---|---|---|
| 33 | posterior commissure appears | Ashwell et al. (1996) |
| 33 | medial forebrain bundle appears | Ashwell et al. (1996) |
| 44 | mammillothalamic tract appears | Ashwell et al. (1996) |
| 44 | stria medullaris thalami appears | Ashwell et al. (1996) |
| 51 | axons in optic stalk | Dunlop et al. (1997) |
| 56 | external capsule appears | Ashwell et al. (1996) |
| 56 | stria terminalis appears | Ashwell et al. (1996) |
| 60 | optic axons invade visual centers | Dunlop et al. (1997) |
| 63 | internal capsule appears | Ashwell et al. (1996) |
| 63 | fornix appears | Ashwell et al. (1996) |
| 70 | anterior commisure appears | Ashwell et al. (1996) |
| 77 | hippocampal commissure appears | Ashwell et al. (1996) |
| 87.5 | corpus callosum appears | Ashwell et al. (1996) |
| 157.5 | eye opening | Clancy et al. (2007) |
| 175 | ipsi/contra segregation in LGN and SC | Robinson and Dreher (1990) |
Read more about this topic: Human Brain Development Timeline