VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Pupil size indexes spatial working memory precision [Elektronski vir]
    Starc, Martina ; Repovš, Grega
    Compared to EEG and fMRI, pupillometry provides a relatively accessible option to track working memory (WM) processes with high temporal resolution. While pupil size has been shown to predict WM ... capacity, no such attempts have been made for the quality of WM representations. We aimed to verify whether pupil size can also be used as an index of spatial WM (SWM) precision. 30 participants (15 female, aged 19-31) remembered the position of circular pictures presented at various locations along a hidden radial grid. After a delay they indicated the remembered position with a joystick providing a parametric measure of trial-to-trial accuracy. During the task participants' eye movements and pupil size were recorded. Pupil size predicted SWM precision but only after controlling for angular bias. More effort in early encoding, late retention and early response phases led to more precise responses (r=0.10), indicating the role of early preparation and sustained attention in WM precision. The results also show the need to consider participants' strategy in the interpretation of results, as these findings largely held only for participants who exhibited less angular bias overall. For these participants bias only seems to emerge if their attention slips in the later stages of retention, leading to an increase in task stress and the adoption of alternative strategies. In contrast, early activation at encoding and responding and participants' continued involvement with the task leads to precise responses. In conclusion, pupil size seems to offer new insights into mental effort and strategy use and is useful as an index of SWM precision.
    Vir: Kognitivna znanost [Elektronski vir] : zbornik 17. mednarodne multikonference - IS 2014, 9-10 oktober 2014, [Ljubljana, Slovenia] : zvezek C = Cognitive sciences : proceedings of the 17th International Multiconference Information Society - IS 2014, October 9th-10th, 2014, Ljubljana, Slovenia : volume C (2014, Str. 69-72)
    Vrsta gradiva - prispevek na konferenci ; neleposlovje za odrasle
    Leto - 2014
    Jezik - angleški
    COBISS.SI-ID - 55847010

    Povezava(-e):

    http://is.ijs.si/zborniki/2014_IS_CP_Volume-C_(CS).pdf

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