Brain evolution

Question 1

Species with a large brain have:

Answer 1

low fat storage

Question 2

To evolve a larger brain:

Answer 2

1. increase net energy intake

2. reduce the allocation of energy to another function

Question 3

Main functions prefrontal cortex (PFC)

Answer 3

1. planning complex cognitive behavior
2. personality expression
3. cognitive decision making
4. moderate social behavior.

Question 4

Bigger brains need more:

Answer 4

White matter than a smaller brain

Question 5

Complex brains have neurons with …. numbers of spines

Answer 5

High

Question 6

low number of spines correlates to

Answer 6

• a simple brain

- low mental health