5908
Simple reaction time ( RT ) to a peripheral visual target ( S2 ) is shortened when a non - informative cue ( S1 ) is flashed at the S2 location 100 - 150 ms before target onset ( early facilitation ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
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