Dr Steven Poulter's Outputs (10)

Mice integrate conspecific and contextual information in forming social episodic-like memories under spontaneous recognition task conditions (2024)
Journal Article
Ross, T. W., Poulter, S. L., Lever, C., & Easton, A. (2024). Mice integrate conspecific and contextual information in forming social episodic-like memories under spontaneous recognition task conditions. Scientific Reports, 14(1), Article 16159. https://doi.org/10.1038/s41598-024-66403-4

The ability to remember unique past events (episodic memory) may be an evolutionarily conserved function, with accumulating evidence of episodic-(like) memory processing in rodents. In humans, it likely contributes to successful complex social networ... Read More about Mice integrate conspecific and contextual information in forming social episodic-like memories under spontaneous recognition task conditions.

Frequency matters: how changes in hippocampal theta frequency can influence temporal coding, anxiety-reduction, and memory (2023)
Journal Article
Hines, M., Poulter, S., Douchamps, V., Pibiri, F., McGregor, A., & Lever, C. (2023). Frequency matters: how changes in hippocampal theta frequency can influence temporal coding, anxiety-reduction, and memory. Frontiers in Systems Neuroscience, 16, https://doi.org/10.3389/fnsys.2022.998116

Hippocampal theta frequency is a somewhat neglected topic relative to theta power, phase, coherence, and cross-frequency coupling. Accordingly, here we review and present new data on variation in hippocampal theta frequency, focusing on functional as... Read More about Frequency matters: how changes in hippocampal theta frequency can influence temporal coding, anxiety-reduction, and memory.

Vector trace cells in the subiculum of the hippocampal formation (2020)
Journal Article
Poulter, S., Lee, S. A., Dachtler, J., Wills, T. J., & Lever, C. (2021). Vector trace cells in the subiculum of the hippocampal formation. Nature Neuroscience, 24, 266-275. https://doi.org/10.1038/s41593-020-00761-w

Successfully navigating in physical or semantic space requires a neural representation of allocentric (map-based) vectors to boundaries, objects and goals. Cognitive processes such as path-planning and imagination entail the recall of vector represen... Read More about Vector trace cells in the subiculum of the hippocampal formation.

Spontaneous object-location memory based on environmental geometry is impaired by both hippocampal and dorsolateral striatal lesions (2020)
Journal Article
Poulter, S. L., Kosaki, Y., Sanderson, D. J., & McGregor, A. (2020). Spontaneous object-location memory based on environmental geometry is impaired by both hippocampal and dorsolateral striatal lesions. Brain and Neuroscience Advances, 4, https://doi.org/10.1177/2398212820972599

We examined the role of the hippocampus and the dorsolateral striatum in the representation of environmental geometry using a spontaneous object recognition procedure. Rats were placed in a kite-shaped arena and allowed to explore two distinctive obj... Read More about Spontaneous object-location memory based on environmental geometry is impaired by both hippocampal and dorsolateral striatal lesions.

En route to delineating hippocampal roles in spatial learning (2019)
Journal Article
Poulter, S., Austen, J. M., Kosaki, Y., Dachtler, J., Lever, C., & McGregor, A. (2019). En route to delineating hippocampal roles in spatial learning. Behavioural Brain Research, 369, Article 111936. https://doi.org/10.1016/j.bbr.2019.111936

The precise role played by the hippocampus in spatial learning tasks, such as the Morris Water Maze (MWM), is not fully understood. One theory is that the hippocampus is not required for ‘knowing where’ but rather is crucial in ‘getting there’. To ex... Read More about En route to delineating hippocampal roles in spatial learning.

The within-subject application of diffusion tensor MRI and CLARITY reveals brain structural changes in Nrxn2 deletion mice (2019)
Journal Article
Pervolaraki, E., Tyson, A., Pibiri, F., Poulter, S., Reichelt, A., Rodgers, R., Clapcote, S., Lever, C., Andreae, L., & Dachtler, J. (2019). The within-subject application of diffusion tensor MRI and CLARITY reveals brain structural changes in Nrxn2 deletion mice. Molecular Autism, 10, Article 8. https://doi.org/10.1186/s13229-019-0261-9

Background: Of the many genetic mutations known to increase the risk of autism spectrum disorder, a large proportion cluster upon synaptic proteins. One such family of presynaptic proteins are the neurexins (NRXN), and recent genetic and mouse eviden... Read More about The within-subject application of diffusion tensor MRI and CLARITY reveals brain structural changes in Nrxn2 deletion mice.

The neurobiology of mammalian navigation (2018)
Journal Article
Poulter, S., Hartley, T., & Lever, C. (2018). The neurobiology of mammalian navigation. Current Biology, 28(17), R1023-R1042. https://doi.org/10.1016/j.cub.2018.05.050

Mammals have evolved specialized brain systems to support efficient navigation within diverse habitats and over varied distances, but while navigational strategies and sensory mechanisms vary across species, core spatial components appear to be widel... Read More about The neurobiology of mammalian navigation.

Reconciling the different faces of hippocampal theta: The role of theta oscillations in cognitive, emotional and innate behaviors (2017)
Journal Article
Korotkova, T., Ponomarenko, A., Monaghan, C. K., Poulter, S. L., Cacucci, F., Wills, T., …Lever, C. (2017). Reconciling the different faces of hippocampal theta: The role of theta oscillations in cognitive, emotional and innate behaviors. Neuroscience & Biobehavioral Reviews, 85, 65-80. https://doi.org/10.1016/j.neubiorev.2017.09.004

The theta oscillation (5–10 Hz) is a prominent behavior-specific brain rhythm. This review summarizes studies showing the multifaceted role of theta rhythm in cognitive functions, including spatial coding, time coding and memory, exploratory locomoti... Read More about Reconciling the different faces of hippocampal theta: The role of theta oscillations in cognitive, emotional and innate behaviors.

Dorsolateral striatal lesions impair navigation based on landmark-goal vectors but facilitate spatial learning based on a "cognitive map" (2015)
Journal Article
Kosaki, Y., Poulter, S., Austen, J., & McGregor, A. (2015). Dorsolateral striatal lesions impair navigation based on landmark-goal vectors but facilitate spatial learning based on a "cognitive map". Learning & Memory, 22(3), 179-191. https://doi.org/10.1101/lm.037077.114

In three experiments, the nature of the interaction between multiple memory systems in rats solving a variation of a spatial task in the water maze was investigated. Throughout training rats were able to find a submerged platform at a fixed distance... Read More about Dorsolateral striatal lesions impair navigation based on landmark-goal vectors but facilitate spatial learning based on a "cognitive map".

Spontaneous object recognition memory is maintained following transformation of global geometric properties (2013)
Journal Article
Poulter, S., Kosaki, Y., Easton, A., & McGregor, A. (2013). Spontaneous object recognition memory is maintained following transformation of global geometric properties. Journal of experimental psychology. Animal behavior processes, 39(1), 93-98. https://doi.org/10.1037/a0030698

Studies of spontaneous behavior to assess memory are widespread, but often the relationships of objects to contexts and spatial locations are poorly defined. We examined whether object-location memory was maintained following global, but not local, c... Read More about Spontaneous object recognition memory is maintained following transformation of global geometric properties.