Time-frequency analysis of auditory working memory

• Autorzy: Duda-Golawska J. , Zygierewicz J.
• Języki publikacji: EN

Abstrakty

EN

Working memory (WM) is defined as a cognitive system with a limited capacity that is responsible for temporarily holding task-relevant information (Sreenivasan et al., 2014). It is hypothesized that WM recruits the same brain areas that process sensory information. Huang et al. (2016) found, in a carefully crafted experiment that enabled the separation of ac‑ tivity related to working memory engaged in remem‑ bering tones from activity related to other mental pro‑ cesses, that there is an enhanced sustained field type activity during a high load task in sources seeded in the auditory cortex. The aim of the current study was to further analyse MEG data obtained from these au‑ ditory WM experiments for possible correlates of high WM load for tones. Specifically, we were interested in markers of auditory WM in the time-frequency do‑ main on the level of individual MEG sensors, especially those with a strong signal from the auditory cortex. We analysed 2 sec long epochs of signal from the delay period between two sounds under two different WM load conditions. We analysed contrast time-frequency maps with cluster-based extreme value statistics. The methodology and results are presented. References: Sreenivasan KK, Curtis CE, DʼEsposito M. Revisiting the role of persistent neural activity during working memory. Trends in Cognitive Sciences. 2014; 18: 82–89. Huang Y, Matysiak A, Heil P, König R, Brosch M. Per‑ sistent neural activity in auditory cortex is related to auditory working memory in humans and nonhuman primates. King AJ, ed. eLife. 2016; 5: e15441.

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2018
• Tom: 78
• Numer: Suppl.1
• Opis fizyczny: p.18-19

Twórcy

autor

Duda-Golawska J.

• Biomedical Physics Division, Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland

autor

Zygierewicz J.

• Biomedical Physics Division, Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland