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Showing 13 to 24 of 29 entries
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Rheumatism, Past and Present, in the Light of Palaeo-Pathology and Social Pre-History.

Canadian Medical Association journal

Snorrason ES.
PMID: 20322486
Can Med Assoc J. 1942 Jun;46(6):589-94.

No abstract available.

Bones in motion: Ontogeny of craniofacial development in sympatric arctic charr morphs.

Developmental dynamics : an official publication of the American Association of Anatomists

Kapralova KH, Jónsson ZO, Palsson A, Franzdóttir SR, le Deuff S, Kristjánsson BK, Snorrason SS.
PMID: 26150089
Dev Dyn. 2015 Sep;244(9):1168-1178. doi: 10.1002/dvdy.24302. Epub 2015 Aug 10.

BACKGROUND: The impressive diversity in the feeding apparatus often seen among related fish species clearly reflects differences in feeding modes and habitat utilization. Such variation can also be found within species. One example of such intraspecific diversity is the...

Higher order compulsivity versus grooming dimensions as treatment targets for the DSM-5 obsessive-compulsive and related disorders.

Depression and anxiety

Snorrason I, Conway CC, Falkenstein MJ, Kelley KN, Kuckertz JM.
PMID: 33793029
Depress Anxiety. 2022 Jan;39(1):49-55. doi: 10.1002/da.23156. Epub 2021 Apr 01.

BACKGROUND: Transdiagnostic definitions of obsessive-compulsive and related disorders (OCRDs) may represent useful treatment targets. The current study sought to characterize higher order dimensions underpinning the OCRDs in the Diagnostic and Statistical Manual of Mental Disorders-Fifth Edition, and examine their...

Do daily mood fluctuations activate ruminative thoughts as a mental habit? Results from an ecological momentary assessment study.

Behaviour research and therapy

Hjartarson KH, Snorrason I, Bringmann LF, Ögmundsson BE, Ólafsson RP.
PMID: 33765651
Behav Res Ther. 2021 May;140:103832. doi: 10.1016/j.brat.2021.103832. Epub 2021 Feb 20.

It has been suggested that mental habits may underpin a heightened disposition to engage in rumination in response to negative mood. The aim of the current study was to assess the role of habit in the dynamic interplay between...

Differential gene expression during early development in recently evolved and sympatric Arctic charr morphs.

PeerJ

Guðbrandsson J, Franzdóttir SR, Kristjánsson BK, Ahi EP, Maier VH, Kapralova KH, Snorrason SS, Jónsson ZO, Pálsson A.
PMID: 29441236
PeerJ. 2018 Feb 07;6:e4345. doi: 10.7717/peerj.4345. eCollection 2018.

Phenotypic differences between closely related taxa or populations can arise through genetic variation or be environmentally induced, leading to altered transcription of genes during development. Comparative developmental studies of closely related species or variable populations within species can help...

Sleep functioning in adults with trichotillomania (hair-pulling disorder), excoriation (skin-picking) disorder, and a non-affected comparison sample.

Journal of obsessive-compulsive and related disorders

Ricketts EJ, Snorrason I, Rozenman M, Colwell CS, McCracken JT, Piacentini J.
PMID: 32467821
J Obsessive Compuls Relat Disord. 2017 Apr;13:49-57. doi: 10.1016/j.jocrd.2017.01.006. Epub 2017 Jan 21.

The present study assessed sleep functioning in Trichotillomania (TTM; Hair-Pulling Disorder) and Excoriation (Skin-Picking) Disorder (ExD), and a non-affected comparison group, and examined the prevalence and correlates of bedtime and sleep-related hair pulling and skin picking. Participants were adult...

[Heart tracings].

Laeknabladid

SNORRASON SP.
PMID: 13503207
Laeknabladid. 1957;41(5):87-96.

No abstract available.

Disentangling Reward Processing in Trichotillomania: 'Wanting' and 'Liking' Hair Pulling Have Distinct Clinical Correlates.

Journal of psychopathology and behavioral assessment

Snorrason I, Ricketts EJ, Olafsson RP, Rozenman M, Colwell CS, Piacentini J.
PMID: 32051656
J Psychopathol Behav Assess. 2019 Jun;41(2):271-279. doi: 10.1007/s10862-018-9712-4. Epub 2018 Dec 10.

Trichotillomania (TTM; hair-pulling disorder) is characterized by an irresistible urge or desire to pull out one's own hair, and a sense of pleasure when hair is pulled out. Evidence from translational neuroscience has shown that 'wanting' (motivation to seek...

Transdiagnostic dimensions in obsessive-compulsive and related disorders: associations with internalizing and externalizing symptoms.

Psychological medicine

Snorrason I, Beard C, Peckham AD, Björgvinsson T.
PMID: 32138800
Psychol Med. 2021 Jul;51(10):1657-1665. doi: 10.1017/S0033291720000380. Epub 2020 Mar 06.

BACKGROUND: Hierarchical structural models of psychopathology rarely extend to obsessive-compulsive spectrum disorders. The current study sought to examine the higher-order structure of the obsessive-compulsive and related disorders (OCRDs) in DSM-5: obsessive-compulsive disorder (OCD), hoarding disorder (HD), body dysmorphic disorder...

The Endocannabinoid System: A New Treatment Target for Obsessive Compulsive Disorder?.

Cannabis and cannabinoid research

Kayser RR, Snorrason I, Haney M, Lee FS, Simpson HB.
PMID: 32656342
Cannabis Cannabinoid Res. 2019 Jun 14;4(2):77-87. doi: 10.1089/can.2018.0049. eCollection 2019.

No abstract available.

Higher order compulsivity versus grooming dimensions as treatment targets for the DSM-5 obsessive-compulsive and related disorders.

Depression and anxiety

Snorrason I, Conway CC, Falkenstein MJ, Kelley KN, Kuckertz JM.
PMID: 33793029
Depress Anxiety. 2022 Jan;39(1):49-55. doi: 10.1002/da.23156. Epub 2021 Apr 01.

BACKGROUND: Transdiagnostic definitions of obsessive-compulsive and related disorders (OCRDs) may represent useful treatment targets. The current study sought to characterize higher order dimensions underpinning the OCRDs in the Diagnostic and Statistical Manual of Mental Disorders-Fifth Edition, and examine their...

Fine-scale parallel patterns in diversity of small benthic Arctic charr (Salvelinus alpinus) in relation to the ecology of lava/groundwater habitats.

Ecology and evolution

Kristjánsson BK, Skúlason S, Snorrason SS, Noakes DL.
PMID: 22833787
Ecol Evol. 2012 Jun;2(6):1099-112. doi: 10.1002/ece3.235.

It is critical to study factors that are important for origin and maintenance of biological diversity. A comparative approach involving a large number of populations is particularly useful. We use this approach to study the relationship between ecological factors...

Showing 13 to 24 of 29 entries