Hordenine, a substance present in beer and malted barley, activates dopamine D2 receptors through G proteins, leading to a possibly prolonged effect on the brain's reward center, researchers report.
A new study links the D2 dopamine receptor to long-term episodic memory.
Using optogenetics to manipulate the brains of opioid addicted mice, researchers discover a neural pathway that appears to be responsible for symptoms of withdrawal.
