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SUMMARY:Working memory performance is tied to stimulus complexity - Adam T
 riabhall
DTSTART:20231106T140000Z
DTEND:20231106T150000Z
UID:TALK208186@talks.cam.ac.uk
CONTACT:Adam Triabhall
DESCRIPTION:This week we will discuss and debate a very recent paper by Pu
 sch and colleagues\, published in Communications Biology (2023).\n\nAbstra
 ct: “Working memory is the cognitive capability to maintain and process 
 information over short periods. Behavioral and computational studies have 
 shown that visual information is associated with working memory performanc
 e. However\, the underlying neural correlates remain unknown. To identify 
 how visual information affects working memory performance\, we conducted b
 ehavioral experiments in pigeons (Columba livia) and single unit recording
 s in the avian prefrontal analog\, the nidopallium caudolaterale (NCL). Co
 mplex pictures featuring luminance\, spatial and color information\, were 
 associated with higher working memory performance compared to uniform gray
  pictures in conjunction with distinct neural coding patterns. For complex
  pictures\, we found a multiplexed neuronal code displaying visual and val
 ue-related features that switched to a representation of the upcoming choi
 ce during a delay period. When processing gray stimuli\, NCL neurons did n
 ot multiplex and exclusively represented the choice already during stimulu
 s presentation and throughout the delay period. The prolonged representati
 on possibly resulted in a decay of the memory trace ultimately leading to 
 a decrease in performance. In conclusion\, we found that high stimulus com
 plexity is associated with neuronal multiplexing of the working memory rep
 resentation possibly allowing a facilitated read-out of the neural code re
 sulting in enhancement of working memory performance” (Pusch et al.\, 20
 23).\n\nReference: Pusch\, R.\, Packheiser\, J.\, Azizi\, A. H.\, Sevincik
 \, C. S.\, Rose\, J.\, Cheng\, S.\, Stuttgen\, M. C.\, & Gunturkun\, O. (2
 023). Working memory performance is tied to stimulus complexity. Communica
 tions Biology\, 1119(6). https://doi.org/10.1038/s42003-023-05486-7
LOCATION:Zoom link: www.bayslab.org/craikjc
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