A scientist working with rats gives the rats a treat every time they press a red button followed by a blue button. By the end of a week, all of the rats have learned to press the buttons in the correct order. How have the brains of the rats changed?
The thalamus has stored the information into short-term memories.
The visual cortex has adapted to see the colors red and blue.
The hippocampus has recorded information into long-term memories.
The hypothalamus has increased the rats' feelings of hunger.
(1 point)