Is the Response Difference due to Visual Familiarity or Motor Planning?
Our familiar targets became familiar when the monkeys learned them during a visual classification task. This task required each monkey to associate a button-press response to each image. Because the most consistent LFP and MUA differences occurred at a time when a motor response could have been observed in the active task, one potential explanation for the observed differences is that they reflect motor response processing or potentially inhibition of a learned response. We show that this is not the explanation by examining 5 additional data sets for Monkey S. Monkey S had participated in a classification task where some images were used as distractors. That is, they were never the basis for deciding which button to press but were there to make detecting a target image more difficult. However, each distractor image was used and seen by the monkey hundreds of times. This provided us with a set of images familiar to the monkey but for which there was no learned motor association to eithe
