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Browsing by Author "Bjornsdottir, Gyda"

Browsing by Author "Bjornsdottir, Gyda"

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  • Ulfarsson, Magnus; Walters, G B; Gústafsson, O; Steinberg, S; Silva, A; Doyle, O M; Brammer, M; Gudbjartsson, Daniel; Arnarsdóttir, S; Jonsdottir, Gudbjorg; Gísladóttir, R S; Bjornsdottir, Gyda; Helgason, H; Ellingsen, L M; Halldórsson, J G; Sæmundsen, Evald E.; Stefánsdóttir, B; Jónsson, L; Eiríksdóttir, V K; Eiríksdóttir, G R; Jóhannesdóttir, G H; Unnsteinsdóttir, U; Jónsdóttir, B; Magnúsdóttir, B B; sulem, patrick; Þorsteinsdóttir, Unnur; Sigurðsson, E; Brandeis, D; Meyer-Lindenberg, A; Stefánsson, H; Stefansson, Kari (Springer Nature, 2017-04-25)
    Several copy number variants have been associated with neuropsychiatric disorders and these variants have been shown to also influence cognitive abilities in carriers unaffected by psychiatric disorders. Previously, we associated the 15q11.2(BP1–BP2) ...
  • Jónsson, Benedikt Atli; Bjornsdottir, Gyda; Thorgeirsson, Thorgeir; Ellingsen, Lotta María; Walters, G. Bragi; Gudbjartsson, Daniel; Stefansson, Hreinn; Stefansson, Kari; Ulfarsson, Magnus (Springer Science and Business Media LLC, 2019-11-27)
    Machine learning algorithms can be trained to estimate age from brain structural MRI. The difference between an individual’s predicted and chronological age, predicted age difference (PAD), is a phenotype of relevance to aging and brain disease. Here, ...
  • Reginsson, Gunnar W.; Ingason, Andrés; Euesden, Jack; Bjornsdottir, Gyda; Ólafsson, Sigurgeir; Sigurdsson, Engilbert; Óskarsson, Högni; Tyrfingsson, Þórarinn; Rúnarsdóttir, Valgerður; Hansdóttir, Ingunn; Steinberg, Stacy; Stefánsson, Hreinn; Gudbjartsson, Daniel; Thorgeirsson, Thorgeir; Stefansson, Kari (Wiley, 2017-02-23)
    We use polygenic risk scores (PRSs) for schizophrenia (SCZ) and bipolar disorder (BPD) to predict smoking, and addiction to nicotine, alcohol or drugs in individuals not diagnosed with psychotic disorders. Using PRSs for 144 609 subjects, including 10 ...
  • Bjornsdottir, Gyda; Ívarsdóttir, Erna V.; Bjarnadóttir, Kristbjörg; Benonisdottir, Stefania; Gylfadottir, Sandra Sif; Arnadottir, Gudny; Benediktsson, Rafn; Halldorsson, Gisli; Helgadottir, Anna; Jónasdóttir, Aðalbjörg; Jónasdóttir, Áslaug; Jonsdottir, Ingileif; Kristinsdóttir, Anna Margrét; Magnússon, Ólafur T.; Másson, Gísli; Melsted, Páll; Rafnar, Thorunn; Sigurðsson, Ásgeir; Sigurdsson, Gunnar; Skúladóttir, Ástrós; Steinthorsdottir, Valgerdur; Styrkarsdottir, Unnur; Thorgeirsson, Gudmundur; Thorleifsson, Gudmar; Vikingsson, Arnor; Gudbjartsson, Daniel; Holm, Hilma; Stefansson, Hreinn; Thorsteinsdottir, Unnur; Norðdahl, Guðmundur L.; sulem, patrick; Thorgeirsson, Thorgeir; Stefansson, Kari (Springer Science and Business Media LLC, 2019-04-16)
    Nerve conduction (NC) studies generate measures of peripheral nerve function that can reveal underlying pathology due to axonal loss, demyelination or both. We perform a genome-wide association study of sural NC amplitude and velocity in 7045 Icelanders ...
  • Bjornsdottir, Gyda; Benonisdottir, Stefania; Sveinbjornsson, Gardar; Styrkarsdottir, Unnur; Þorleifsson, Guðmar; Walters, G. Bragi; Björnsson, Aron; Ólafsson, Ingvar Hákon; Úlfarsson, Elfar; Víkingsson, Arnór; Hansdóttir, Ragnheiður; Karlsson, Karl O.; Rafnar, Thorunn; Jonsdottir, Ingileif; Frigge, Michael L.; Kong, Augustine; Oddsson, Asmundur; Másson, Gísli; Magnússon, Ólafur T.; Gudbjartsson, Tomas; Stefánsson, Hreinn; sulem, patrick; Gudbjartsson, Daniel; Thorsteinsdottir, Unnur; Thorgeirsson, Thorgeir; Stefansson, Kari (Springer Nature, 2017-02-22)
    Lumbar disc herniation (LDH) is common and often debilitating. Microdiscectomy of herniated lumbar discs (LDHsurg) is performed on the most severe cases to resolve the resulting sciatica. Here we perform a genome-wide association study on 4,748 LDHsurg ...