Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Behaviors observed in simulation.
| Behavior | Description | Time of appearance (min) |
|---|---|---|
| Fetal babbling | General arm movements | 0 |
| Pre-reaching position | Moves hand to the side of the head before reaching | 10 |
| Swiping | Arms make swiping actions in the general direction of visual stimuli | 10 |
| Visually elicited reaching | Reaches toward visual targets with some success | 20 |
| Guided reaching | Successful and smoother reaches toward visual targets | 30 |
| Learning ends | Refined hand-eye coordination | 90 |
