A Computational Model on Affects of Subcortical Oscillations During Working Memory


Celikok U., Şengör N. S.

23nd Signal Processing and Communications Applications Conference (SIU), Malatya, Türkiye, 16 - 19 Mayıs 2015, ss.1853-1856 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Malatya
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1853-1856

Özet

During working memory tasks, modulation of different frequency band oscillations has been observed; however, a full explanation of this phenomenon is still needed. Background oscillations coming from subcortical structures drive a gating-like mechanism for working memory computations or states. It is also known that different frequency bands are associated with different computations carried out by working memory: the storage of new information correlates positively with oscillations in the beta-gamma band, theta-band oscillations are directly linked to maintenance of information while ignoring irrelevant stimulations, and clearance of memory is associated with alpha-band oscillations. We propose a computational framework for the cerebral cortex that connects individual oscillatory bands to different working memory processes.