30587
RESULTS : The results show that smokers during nicotine withdrawal display increased corticospinal excitability with regard to the I / O curve ( TMS intensity 150 % of resting motor threshold ) compared to non - smokers and furthermore enhanced SAI and diminished ICF at the intracortical circuit level .
 Chemical: nicotine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: nicotine