Neurotransmitters that have a role in learning?

[harlequinphoenix]

A question on a prac exam said something like list three neurotransmitters involved in learning and their roles. It's kind of made me worried as Grivas doesn't have a WHOLE heap about about. I know that it would be glutamate, dopamine and acetylcholine as the main ones probably, but I don't actually know exactly what either of these actually DO to enable or enhance learning - I just know that they are important for it. In case there's a question can someone just clear this up for me, maybe with a sentence on each?
Thank you!

[monkeywantsabanana]

"Glutamate stimulates the growth of dendritic spines on the post synaptic neuron, making it more receptive to further bursts of glutamate from the postsynaptic neuron. This leads to the release of dopamine which interacts with the genes in the neuron to generate new proteins in the neuron. Altogether, this process has the effect of producing long-lasting structural changes in the dendrites and increased efficiency of the neural pathways for the learnt behaviour." - Oxford.

I'm not too sure about acetycholine, but I think it has something to do with memory and muscle movement and the controlling of the hippocampus... which is linked to learning new information which will become declarative memory.

[harlequinphoenix]

okay, thanks! Yea acetylcholine would be the last I'd talk about haha... i might have to google it