Distribution of Active and Resting Periods in the Motor Activity of Patients with Depression and Schizophrenia

Psychiatry Investigation
Ole Bernt FasmerKetil J Oedegaard

Abstract

Alterations of activity are prominent features of the major functional psychiatric disorders. Motor activity patterns are characterized by bursts of activity separated by periods with inactivity. The purpose of the present study has been to analyze such active and inactive periods in patients with depression and schizophrenia. Actigraph registrations for 12 days from 24 patients with schizophrenia, 23 with depression and 29 healthy controls. Patients with schizophrenia and depression have distinctly different profiles with regard to the characterization and distribution of active and inactive periods. The mean duration of active periods is lowest in the depressed patients, and the duration of inactive periods is highest in the patients with schizophrenia. For active periods the cumulative probability distribution, using lengths from 1 to 35 min, follows a straight line on a log-log plot, suggestive of a power law function, and a similar relationship is found for inactive periods, using lengths from 1 to 20 min. For both active and inactive periods the scaling exponent is higher in the depressed compared to the schizophrenic patients. The present findings add to previously published results, with other mathematical methods, sugg...Continue Reading

References

Apr 1, 1979·The British Journal of Psychiatry : the Journal of Mental Science·S A Montgomery, M Asberg
Oct 1, 1993·Electroencephalography and Clinical Neurophysiology·J J Van HiltenR A Roos
Jun 10, 2000·Journal of the American Academy of Child and Adolescent Psychiatry·A V DaneR Tannock
May 17, 2003·Sleep·Sonia Ancoli-IsraelCharles P Pollak
May 13, 2005·Nature·Albert-László Barabási
Oct 13, 2007·Physical Review Letters·Toru NakamuraYoshiharu Yamamoto
May 1, 2008·PloS One·Toru NakamuraYoshiharu Yamamoto
Sep 16, 2009·Neuropsychobiology·Sebastian WaltherWerner Strik
Oct 12, 2010·Expert Review of Neurotherapeutics·Jan HaavikOle Bernt Fasmer
Aug 8, 2012·Journal of Affective Disorders·Christopher BurtonMaria Wolters
Dec 12, 2012·Acta Psychiatrica Scandinavica. Supplementum·Max Fink
Jan 16, 2013·Progress in Neuro-psychopharmacology & Biological Psychiatry·Jaime M MontiGregory M Brown
Jan 31, 2014·Frontiers in Public Health·Philip M HurvitzGlen E Duncan
Mar 4, 2014·PloS One·Karoline Krane-GartiserOle Bernt Fasmer

❮ Previous
Next ❯

Citations

Jun 3, 2016·Journal of Affective Disorders·Karoline Krane-GartiserGunnar Morken
Apr 20, 2018·Physiological Measurement·Erik Reinertsen, Gari D Clifford
Dec 3, 2016·Behavioral and Brain Functions : BBF·Ole Bernt Fasmer, Espen Borgå Johansen
Jan 11, 2020·Frontiers in Psychiatry·Jeanette Brun LarsenSolveig Klæbo Reitan
Jul 7, 2018·Psychiatry Research·Ishraq SiddiquiGeorge Foussias

❮ Previous
Next ❯

Software Mentioned

SPSS

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.