30586
Corticospinal excitability was explored by motor threshold and input / output curve ( I / O curve ) , and intracortical excitability was explored by means of paired - pulse TMS techniques ( intracortical facilitation ( ICF ) , short - latency intracortical inhibition ( SICI ) , I - wave facilitation and short - latency afferent inhibition ( SAI ) ) .
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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:
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