Sophia Wilhelm
@sophiawilhelm.bsky.social
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Postdoc at the University of Oslo | Interested in sleep, development, and memory 🧠💤
🎉 My first first-author paper was just accepted in JEP:HPP! We asked what “active” vs “passive” WM states do - do they protect against interference? Across 4 behavioural experiments we find no reliable protection. Updated preprint here:
doi.org/10.1101/2024.02.05.578913
@elkanakyurek.bsky.social
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Feature and space-based interference with functionally active and passive items in working memory
Functionally active and passive states in working memory have been related to different neural mechanisms. Memoranda in active states might be maintained by persistent neural firing, whereas memoranda in passive states might be maintained through short-term synaptic plasticity. We reasoned that this might make these items differentially susceptible to interference during maintenance, in particular that passively maintained items might be more robust. To test this hypothesis, we gave our participants a working memory task in which one item was prioritised (active) by always probing it first, while the other item was deprioritised (passive) by always probing it second. In two experiments, on half the trials, we presented an interfering task during memory maintenance, in which the stimuli matched either the feature dimension of the memory items (colour or orientation), or their spatial location. Whether the interfering task appeared on a given trial was unpredictable. In a third experiment where participants were given prior knowledge of the interference condition, and finally in a fourth experiment we used a reward-based prioritisation cue. Across experiments, we found that both active and passive memory items were affected by interference to a similar extent, with overall performance being closely matched in all experiments. We further investigated precision and probability of target response parameters from the standard mixture model, which also showed no differences between states. We conclude that active and passive items, although potentially stored in different neuronal states, do not show differential susceptibility to interference. ### Competing Interest Statement The authors have declared no competing interest.
https://doi.org/10.1101/2024.02.05.578913
13 days ago
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reposted by
Sophia Wilhelm
Bernhard Staresina
10 months ago
join us at
@oxexppsy.bsky.social
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@ox.ac.uk
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add a skeleton here at some point
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reposted by
Sophia Wilhelm
Elkan Akyurek
over 1 year ago
Does one preprint a review? I did anyway: If you're interested in temporal aspects of perception, attention, and working memory, check out my review on how temporal integration plays an adaptive role in all of those. 👉https://osf.io/preprints/psyarxiv/h5cvx
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reposted by
Sophia Wilhelm
Elkan Akyurek
almost 2 years ago
Güven Kandemir,
@sophiawilhelm.bsky.social
, Nikolai Axmacher & me studied color memoranda in working memory with impulse perturbation and multivariate pattern analysis. We found some interesting disparities with memory for orientations. The paper is now out in iScience:
www.cell.com/iscience/ful...
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