Journal of Molecular Neuroscience

, Volume 54, Issue 1, pp 59–70

Brain Network Activation (BNA) Reveals Scopolamine-Induced Impairment of Visual Working Memory

  • Amit Reches
  • Naama Levy-Cooperman
  • Ilan Laufer
  • Revital Shani-Hershkovitch
  • Keren Ziv
  • Dani Kerem
  • Noga Gal
  • Yaki Stern
  • Guy Cukierman
  • Myroslava K. Romach
  • Edward M. Sellers
  • Amir B. Geva
Article

DOI: 10.1007/s12031-014-0250-6

Cite this article as:
Reches, A., Levy-Cooperman, N., Laufer, I. et al. J Mol Neurosci (2014) 54: 59. doi:10.1007/s12031-014-0250-6

Abstract

The overarching goal of this event-related potential (ERP) study was to examine the effects of scopolamine on the dynamics of brain network activation using a novel ERP network analysis method known as Brain Network Activation (BNA). BNA was used for extracting group-common stimulus-activated network patterns elicited to matching probe stimuli in the context of a delayed matching-to-sample task following placebo and scopolamine treatments administered to healthy participants. The BNA extracted networks revealed the existence of two pathophysiological mechanisms following scopolamine, disconnection, and compensation. Specifically, weaker frontal theta and parietal alpha coupling was accompanied with enhanced fronto-centro-parietal theta activation relative to placebo. In addition, using the characteristic BNA network of each treatment as well as corresponding literature-guided selective subnetworks as combined biomarkers managed to differentiate between individual responses to each of the treatments. Behavioral effects associated with scopolamine included delayed response time and impaired response accuracy. These results indicate that the BNA method is sensitive to the effects of scopolamine on working memory and that it may potentially enable diagnosis and treatment assessment of dysfunctions associated with cholinergic deficiency.

Keywords

Brain Network Activation (BNA) Scopolamine Cholinergic hypothesis Working memory (WM) Dementia Event-related potentials (ERPs) 

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Amit Reches
    • 1
  • Naama Levy-Cooperman
    • 2
  • Ilan Laufer
    • 1
  • Revital Shani-Hershkovitch
    • 1
  • Keren Ziv
    • 1
  • Dani Kerem
    • 1
  • Noga Gal
    • 1
  • Yaki Stern
    • 1
  • Guy Cukierman
    • 1
  • Myroslava K. Romach
    • 3
    • 4
  • Edward M. Sellers
    • 3
    • 4
  • Amir B. Geva
    • 1
    • 5
  1. 1.ElMindA LtdHerzliyaIsrael
  2. 2.INC ResearchTorontoCanada
  3. 3.Department of PsychiatryUniversity of TorontoTorontoCanada
  4. 4.DL Global Partners IncTorontoCanada
  5. 5.Electrical and Computer EngineeringBen Gurion University of the NegevBeershebaIsrael

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