Right Anterior Theta Hypersynchrony as a Quantitative Measure Associated with Autistic Traits and K-Cl Cotransporter KCC2 Polymorphism

Aykan S., Puglia M. H., Kalaycioglu C., Pelphrey K. A., Tuncalı T., Nalçacı E.

JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS, vol.52, no.1, pp.61-72, 2022 (SSCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 1
  • Publication Date: 2022
  • Doi Number: 10.1007/s10803-021-04924-x
  • Journal Indexes: Social Sciences Citation Index (SSCI), Scopus, Academic Search Premier, ASSIA, PASCAL, BIOSIS, Child Development & Adolescent Studies, CINAHL, EBSCO Education Source, Education Abstracts, Educational research abstracts (ERA), EMBASE, ERIC (Education Resources Information Center), Linguistics & Language Behavior Abstracts, MEDLINE, Psycinfo, Public Affairs Index
  • Page Numbers: pp.61-72
  • Keywords: Autistic traits, Coherence, Excitation, inhibition imbalance, Quantitative traits, KCC2, Theta oscillations
  • Ankara University Affiliated: Yes


Our aim was to use theta coherence as a quantitative trait to investigate the relation of the polymorphisms in NKCC1 (rs3087889) and KCC2 (rs9074) channel protein genes to autistic traits (AQ) in neurotypicals. Coherence values for candidate connection regions were calculated from eyes-closed resting EEGs in two independent groups. Hypersynchrony within the right anterior region was related to AQ in both groups (p < 0.05), and variability in this hypersynchrony was related to the rs9074 polymorphism in the total group (p < 0.05). In conclusion, theta hypersynchrony within the right anterior region during eyes-closed rest can be considered a quantitative measure for autistic traits. Replicating our findings in two independent populations with different backgrounds strengthens the validity of the current study.