Journal Article

PreJuSER-18375

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Internally vs. externally triggered movements in patients with major depression

Hoffstaedter, F.FZJ* ; Sarlon, J. ; Grefkes, C. ; Eickhoff, S. B.FZJ*

2012
Elsevier Amsterdam

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Please use a persistent id in citations: doi:10.1016/j.bbr.2011.11.024

Abstract: Psychomotor retardation is a prominent clinical feature of major depression. While several studies investigated these deficits, differences between internally and externally triggered response selection and initiation are less well understood. In the current study, we delineate internally vs. externally driven response selection and initiation in depression and their relation to basic psychomotor functioning.20 inpatients diagnosed with a (unipolar) major depression and 20 closely matched healthy controls performed a computerized motor paradigm assessing differences between internally and externally cued movements. Psychomotor performance and basic memory functions were assessed using a neuropsychological test-battery. To examine within group homogeneity a multivariate clustering approach was applied.Patients featured a global slowing of internally and externally cued response selection compared to controls, as well as impairments in basic psychomotor functioning. Yet, basic motor speed was preserved. Furthermore, patients were more severely impaired when movements involved internal response selection. The data-driven clustering revealed two patient subgroups, which both showed psychomotor disturbances, while only one featured slowing of response selection.The results suggest a differential rather than a global psychomotor slowing in major depression with specific impairments of visuospatial and attentional processing as cognitive aspects of psychomotor functioning. As found for depression, in Parkinson's disease internally cued movements are more severely affected than externally cued reactions. Both may therefore be caused by dopaminergic deregulation due to frontostriatal deficits. Finally, multivariate clustering of behavioral data may be a promising future approach to identify subtypes of psychomotor or cognitive disturbances in different patient populations.

Keyword(s): Adolescent (MeSH) ; Adult (MeSH) ; Aged (MeSH) ; Antidepressive Agents: pharmacology (MeSH) ; Antidepressive Agents: therapeutic use (MeSH) ; Aptitude Tests: statistics & numerical data (MeSH) ; Case-Control Studies (MeSH) ; Cues (MeSH) ; Depressive Disorder, Major: diagnosis (MeSH) ; Depressive Disorder, Major: drug therapy (MeSH) ; Depressive Disorder, Major: physiopathology (MeSH) ; Female (MeSH) ; Humans (MeSH) ; Male (MeSH) ; Middle Aged (MeSH) ; Movement: drug effects (MeSH) ; Movement: physiology (MeSH) ; Neuropsychological Tests: statistics & numerical data (MeSH) ; Psychomotor Performance: drug effects (MeSH) ; Psychomotor Performance: physiology (MeSH) ; Severity of Illness Index (MeSH) ; Antidepressive Agents ; J ; Response selection (auto) ; Depression (auto) ; Psychomotor deficits (auto) ; Cognitive deficits (auto) ; Multivariate clustering (auto)

Note: This work was partly funded by the Human Brain Project (R01-MH074457-01A1; S.B.E.), the Initiative and Networking Fund of the Helmholtz Association within the Helmholtz Alliance on Systems Biology (Human Brain Model; S.B.E.) and the DFG (IRTG 1328, S.B.E.).

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Contributing Institute(s):

1. Molekulare Organisation des Gehirns (INM-2)
2. Strukturelle und funktionelle Organisation des Gehirns (INM-1)

Research Program(s):

1. Funktion und Dysfunktion des Nervensystems (FUEK409) (FUEK409)
2. 89571 - Connectivity and Activity (POF2-89571) (POF2-89571)

Appears in the scientific report 2012

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Database coverage:
; BIOSIS Previews ; Current Contents - Life Sciences ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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