Even though the fetus is now developing areas that will become specific sections of the brain, not until the end of week 5 and into week 6 (usually around forty to forty-three days) does the first electrical brain activity begin to occur. ... Neurons proliferate and begin their migration throughout the brain.

What age does a fetus have brain activity?

The very beginnings of our higher brain structures only start to appear between weeks 12 and 16. Crucially, the co-ordinated brain activity required for consciousness does not occur until 24-25 weeks of pregnancy.

At what age does a fetus develop consciousness?

New research shows that babies display glimmers of consciousness and memory as early as 5 months old. For decades, neuroscientists have been searching for an unmistakable signal of consciousness in electrical brain activity.