Arne Ekstrom

@adekstreme.bsky.social

how important are space and time to memory? the surprising result from a new paper with graduate student Sameer Sabharwal-Siddiqi is that several measures of space and time show no correlation with the richness of episodic memories! check it out: www.sciencedirect.com/science/arti...

Naturalistic movements enrich episodic memories but not their spatiotemporal structure

It remains unclear how episodic memories, our memories for past events, are generated from the rich sensory details encompassing everyday experience. …

sciencedirect.com

what happens when you spend two weeks learning new navigation or memory skills? as shown in our recent paper below, brain network connectivity changes but not hippocampal or other brain volumes! special thanks to collaborators Li Zheng and Steve Weisberg elifesciences.org/articles/106...

Newly trained navigation and verbal memory skills in humans elicit changes in task-related networks but not brain structure

Learning new navigation or memory skills engages flexible brain network dynamics without altering gray matter, white matter, or hippocampal structure.

elifesciences.org

This is truly amazing. 85% accurate test in 45 minutes. The work was funded by the National Cancer Institute of the National Institutes of Health. Good thinking on the part of Trump/Musk to cut its funding. Make Cancer Great Again.

@kathychasler.bsky.social · last yr.

Goosebump producing news this week out of Oregon Health and Science University in the diagnosis of pancreatic CA. They developed a groundbreaking blood test, called PAC-MANN. This new test can find pancreatic cancer in just 45 minutes, even in its earliest stages.

A pleasure to speak to host Joe Murray of The Human Podcast about my research, career & journey through life Covering: London taxi drivers, dreaming rats, virtual worlds, my navigation test/game: Sea Hero Quest, & navigators of micronesia: youtube.com/watch?v=9eTz...

Life Story of Cognitive Neuroscientist | The Human Podcast Ep 34 (Hugo Spiers)

Dr Hugo Spiers is a professor of cognitive neuroscience at University College London and the director of the Spiers Lab. His work focuses on spatial cognitio...

youtube.com

We're looking for a new postdoc to join my lab group! Please help spread the word. Our project is collaborative study with the Washington State Twin Registry (WSTR) and affords incredible research opportunities related to the behavior genetic study of social relationships and health. Details in link

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Does the hippocampus play a time-limited or perpetual role in spatial memory? In naturalistic tasks, the hippocampus is NOT necessary for gross representations of large-scale environments. But it plays a long-lasting role in memory for local layouts and details. #neuroskyence @PsychSciSky

Impoverished details with preserved gist in remote and recent spatial memory following hippocampal a...

Cognitive Map Theory predicts that the hippocampus (HPC) plays a specialized, time-invariant role in supporting allocentric spatial memory, while Stan…

sciencedirect.com

New paper in #Jneurosci !⭐ doi.org/10.1523/JNEU... Prior work suggests that age-related reductions in neural selectivity are restricted to the scene-responsive cortex. We show that age effects for other visual categories are observed when selectivity is measured at the level of individual stimuli.

Dissociative effects of age on neural differentiation at the category and item level

Increasing age is associated with age-related neural dedifferentiation, a reduction in the selectivity of neural representations, which has been proposed to contribute to cognitive decline in older ag...

doi.org