1382
We found that ( i ) gabapentin reduced the activations in the bilateral operculoinsular cortex , independently of the presence of central sensitization ; ( ii ) gabapentin reduced the activation in the brainstem , only during central sensitization ; ( iii ) gabapentin suppressed stimulus - induced deactivations , only during central sensitization ; this effect was more robust than the effect on brain activation .
 gabapentin, gabapentin, gabapentin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 gabapentin, gabapentin, gabapentin