Performance (Mean±SEM) on the ANAM reaction time (RT) task at 10 AM and 3 PM the day after SD and NS. Deviation from the mode represents the mean deviation of each score from the modal value. The mean reaction time was significantly greater at 10 AM in the SD vs NS (**p≤0.001) and at 10 AM vs 3 PM in the SD condition (#p≤0.05). Deviation from the Mode was significantly greater at 10 AM following SD compared to the same time after NS (*p≤0.01), and was also significantly greater at 10 AM vs 3 PM in the SD condition (^p≤0.05).