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The altered effects of apomorphine and amphetamine could indicate differential changes in dopamine receptor signalling leading to functional desensitisation , or altered modulation of sensory gating in the nucleus accumbens by limbic structures such as the hippocampus .
 Chemical: apomorphine; Chemical: amphetamine; Chemical: dopamine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: apomorphine; Chemical: amphetamine; Chemical: dopamine