bioRxiv (Cold Spring Harbor Laboratory)
Phase of firing does not reflect temporal order in sequence memory of humans and recurrent neural networks
September 2022 • S Liebe, Johannes Niediek, Matthijs Pals, Thomas P. Reber, Jenny Faber, Jan Bostroem, Christian E. Elger, Jakob H. Macke, Florian Mormann
Abstract A prominent theory proposes that the temporal order of a sequence of items held in memory is reflected in ordered firing of neurons at different phases of theta oscillations 1 . We probe this theory by directly measuring single neuron activity (1420 neurons) and local field potentials (LFP, 921 channels) in the medial temporal lobe of 16 epilepsy patients performing a working memory task for temporal order. We observe theta oscillations and preferential firing of single neurons at theta phase during memor…