SYNGAP1 and juvenile absence epilepsy: Difficulties in both initiating and maintaining sleep as well as reduced overall sleep duration have been reported in individuals with SYNGAP1 mutations.3,8,9 In our previous work we performed 6 hr recordings EEG recordings and found that Syngap+/Δ−GAP animals displayed absence seizures at a higher rate than controls.17 We have further analysed these recordings, which were made during daylight hours, resulting in rats spending approximately half of the recording time asleep.