You will be presented with a citation segment from the section of a research paper. Classify the intent behind this citation by choosing from one of the following categories:

- Method: Cites the paper for its methodology or procedure.
- Background: Cites the paper to provide background information.
- Result: Cites the paper for its findings or results.

Your answer should be a single word from the following list of options: ["Method", "Background", "Result"]. Do not include any other text in your response.

Citation sentence:

…a selective M2/M4 autoreceptor antagonist, that blocks the self-inhibitory mechanism by which acetylcholine
regulates its own release and (iii) by selectively blocking M1 muscarinic receptors, key modulators of both LTD and LTP
(Calabresi et al., 2000; Wang et al., 2006; Bonsi et al., 2008).
Background