D1 and D2 receptors

D1 and D2 receptors are types of dopamine receptors in the brain, acting like locks that dopamine (a chemical messenger) fits into (the key). D1 receptors typically activate or stimulate neurons, enhancing certain brain signals, and play roles in mood, motivation, and learning. D2 receptors generally inhibit or reduce neuron activity, helping regulate movement and behavior. These receptors work together to balance dopamine's effects, influencing how we think, feel, and move. They are crucial for normal brain function, and imbalances can contribute to conditions like Parkinson's disease, schizophrenia, and addiction.