Individual differences in spatial working memory strategies differentially reflected in the engagement of control and default brain networks

Purg Suljič, Nina (avtor), Kraljič, Aleksij (avtor), Rahmati, Masih (avtor), Cho, Youngsun T. (avtor), Slana Ozimič, Anka (avtor), Murray, John D. (avtor), Anticevic, Alan (avtor), Repovš, Grega (avtor)

Spatial locations can be encoded and maintained in working memory using different representations and strategies. Fine-grained representations provide detailed stimulus information, but are cognitively demanding and prone to inexactness. The uncertainty in fine-grained representations can be compensated by the use of coarse, but robust categorical representations. In this study, we employed an individual differences approach to identify brain activity correlates of the use of fine-grained and categorical representations in spatial working memory. We combined data from six functional magnetic resonance imaging studies, resulting in a sample of (⁠women, years) healthy participants performing a spatial working memory task. Our results showed that individual differences in the use of spatial representations in working memory were associated with distinct patterns of brain activity. Higher precision of fine-grained representations was related to greater engagement of attentional and control brain systems throughout the task trial, and the stronger deactivation of the default network at the time of stimulus encoding. In contrast, the use of categorical representations was associated with lower default network activity during encoding and higher frontoparietal network activation during maintenance. These results may indicate a greater need for attentional resources and protection against interference for fine-grained compared with categorical representations.

• Jezik: Angleški jezik
• Ključne besede: neurosciences, functional magnetic resonance imaging fMRI, short term memory, spatial memory, brain, mental representations, individual differences
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FF - Filozofska fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 16 str.
• Številčenje: Vol. 34, iss. 8
• PID: 20.500.12556/RUL-161603
• UDK: 159.953.2:612.82
• ISSN pri članku: 1460-2199
• DOI: 10.1093/cercor/bhae350
• COBISS.SI-ID: 207256579
• Datum objave v RUL: 12.09.2024

Gradivo je del revije

• Naslov: Cerebral cortex
• Skrajšan naslov: Cereb Cortex
• Založnik: Oxford University Press.
• ISSN: 1460-2199
• COBISS.SI-ID: 3211028

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: nevroznanost, funkcijsko magnetnoresonančno slikanje fMRI, delovni spomin, prostorski spomin, možgani, miselne predstave, medosebne razlike