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Table 1. 

Distribution of Trial Conditions


20 Hz “Covert”
100 Hz “Covert”
20 Hz “Overt”
100 Hz “No Task”
200 μm tactile stimulation 40 40 40 80 
100 μm 40 40 40  
20 μm (“threshold” @ 20 Hz) 40 40 40  
No stimulation 40 40  

20 Hz “Covert”
100 Hz “Covert”
20 Hz “Overt”
100 Hz “No Task”
200 μm tactile stimulation 40 40 40 80 
100 μm 40 40 40  
20 μm (“threshold” @ 20 Hz) 40 40 40  
No stimulation 40 40  

The distribution of different trial types administered is shown. “Overt” and “Covert” refer to whether detection was reported by button press or whether the task was performed but no response given, respectively. “No Task” indicates that a stimulus was presented, but no response was required. In each cell, the number of trials of a given type presented during an experiment in a single subject is indicated (of 520 total). Blank cells indicate that no trial of that type was presented.

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