Environmental novelty elicits a later theta phase of firing in CA1 but not subiculum (2010)
Journal Article
Lever, C., Burton, S., Jeewajee, A., Wills, T., Cacucci, F., Burgess, N., & O'Keefe, J. (2010). Environmental novelty elicits a later theta phase of firing in CA1 but not subiculum. Hippocampus, 20(2), 229-234. https://doi.org/10.1002/hipo.20671

The mechanism supporting the role of the hippocampal formation in novelty detection remains controversial. A comparator function has been variously ascribed to CA1 or subiculum, whereas the theta rhythm has been suggested to separate neural firing in... Read More about Environmental novelty elicits a later theta phase of firing in CA1 but not subiculum.

Changes to open field surfaces typically used to elicit hippocampal remapping elicit graded exploratory responses (2009)
Journal Article
Wells, C., Krikke, B., Saunders, J., Whittington, A., & Lever, C. (2009). Changes to open field surfaces typically used to elicit hippocampal remapping elicit graded exploratory responses. Behavioural Brain Research, 197(1), 234-238. https://doi.org/10.1016/j.bbr.2008.08.013

Hippocampal theta frequency, novelty, and behaviour (2009)
Journal Article
Lever, C., Jeewajee, A., Burton, S., O’Keefe, J., & Burgess, N. (2009). Hippocampal theta frequency, novelty, and behaviour. Hippocampus, 19(4), 409-410. https://doi.org/10.1002/hipo.20557

Boundary vector cells in the subiculum of the hippocampal formation (2009)
Journal Article
Lever, C., Burton, S., Jeewajee, A., O'Keefe, J., & Burgess, N. (2009). Boundary vector cells in the subiculum of the hippocampal formation. Journal of Neuroscience, 29(31), 9771-9777. https://doi.org/10.1523/jneurosci.1319-09.2009

“Boundary vector cells” were predicted to exist by computational models of the environmental inputs underlying the spatial firing patterns of hippocampal place cells (O'Keefe and Burgess, 1996; Burgess et al., 2000; Hartley et al., 2000). Here, we re... Read More about Boundary vector cells in the subiculum of the hippocampal formation.

Environmental novelty is signaled by reduction of the hippocampal theta frequency (2008)
Journal Article
Jeewajee, A., Lever, C., Burton, S., O’Keefe, J., & Burgess, N. (2008). Environmental novelty is signaled by reduction of the hippocampal theta frequency. Hippocampus, 18(4), 340-348. https://doi.org/10.1002/hipo.20394

The hippocampal formation (HF) plays a key role in novelty detection, but the mechanisms remain unknown. Novelty detection aids the encoding of new information into memory—a process thought to depend on the HF and to be modulated by the theta rhythm... Read More about Environmental novelty is signaled by reduction of the hippocampal theta frequency.