946
Several mechanisms are described through which repeated coupling of cognitive training challenges with nAChR stimulation may enhance and accelerate cognitive remediation training effects , advancing such interventions into more effective and practicable treatments of some of the most debilitating symptoms of schizophrenia .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None