Postdoc position available at postlab.psych.wisc.edu. Pls send cv to [email protected]
Our interests in human memory and cognition encompass the cognitive and neural basis of working memory, attention, control, and consciousness.News Madison Symposium on Memory & Control. On 30 May 202...
What is the level of abstraction of visual working memories across cortex? We used RSA to look at the encoding of object orientation in a retro-cued WM task, and asked how strongly the neural format would generalize across visually dissimilar objects
New paper with @paulm-k.bsky.social and Mark Stokes on how we switch internal attention between working memory contents. Beta-band oscillations tracked the magnitude and success of these switches.
www.jneurosci.org/content/46/1...
#neuroskyence
Brad Postle
www.jneurosci.org
Flexible prioritization in working memory (WM) is supported by neural oscillations in frontal and sensory brain areas, but the roles of different oscillations remain poorly understood. Recordings in h...
So, was distributed WM all abstract, everywhere? No: The same areas also showed an orthogonal representation of the object’s orientation in a 180° space, i.e. a line-like format. This format was object-dependent, likely reflecting the stimuli's concrete visual appearance.
While we found no gradient of abstraction in terms of generalization, we (like others) did see regional differences in categorization, where cardinal repulsion emerged only in the parietal cortex. Generalization and categorization might be distinct facets of WM abstraction
Together, 'abstract' (object-independent) and 'concrete' (object-specific) WM info appeared multiplexed within the same areas, and this coexistence of formats was widely distributed.
Proud to share new fMRI work by the fabulous Or Yizhar (not on Bsky): on the manifold level(s) of abstraction of visual working memories in visual cortex. With a fantastic team, Fabio Bauer, Inés Pont Sanchis, and @hanzule.bsky.social, supported by @erc.europa.eu
doi.org/10.64898/202...
More in our preprint www.biorxiv.org/content/10.6... A big shout out to the stellar Or Yizhar and the whole team (@inespontsanc.bsky.social also just joined Bsky)!
To our surprise, we found that the neural format of the objects’ orientation in 360° space was fully generalized (object-independent) in all our ROIs, from early visual to parietal cortex.
