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Rosengarth, Katharina ; Keck, Ingo ; Brandl-Rühle, Sabine ; Frolo, Jozef ; Hufendiek, Karsten ; Greenlee, Mark W. ; Plank, Tina

Functional and structural brain modifications induced by oculomotor training in patients with age-related macular degeneration

Rosengarth, Katharina, Keck, Ingo , Brandl-Rühle, Sabine, Frolo, Jozef, Hufendiek, Karsten, Greenlee, Mark W. und Plank, Tina (2013) Functional and structural brain modifications induced by oculomotor training in patients with age-related macular degeneration. Frontiers in psychology : Perception Sience 4, S. 428.

Veröffentlichungsdatum dieses Volltextes: 03 Sep 2013 08:29
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.28776


Zusammenfassung

Patients with age-related macular degeneration (AMD) are reliant on their peripheral visual field. Oculomotor training can help them to find the best area on intact peripheral retina and to efficiently stabilize eccentric fixation. In this study, nine patients with AMD were trained over a period of 6 months using oculomotor training protocols to improve fixation stability. They were followed over ...

Patients with age-related macular degeneration (AMD) are reliant on their peripheral visual field. Oculomotor training can help them to find the best area on intact peripheral retina and to efficiently stabilize eccentric fixation. In this study, nine patients with AMD were trained over a period of 6 months using oculomotor training protocols to improve fixation stability. They were followed over an additional period of 6 months, where they completed an auditory memory training as a sham training. In this cross-over design five patients started with the sham training and four with the oculomotor training. Seven healthy age-matched subjects, who did not take part in any training procedure, served as controls. During the 6 months of training the AMD subjects and the control group took part in three functional and structural magnetic resonance imaging (MRI) sessions to assess training-related changes in the brain function and structure. The sham-training phase was accompanied by two more fMRI measurements, resulting in five MRI sessions at intervals of 3 months for all participants. Despite substantial variability in the training effects, on average, AMD patients benefited from the training measurements as indexed by significant improvements in their fixation stability, visual acuity, and reading speed. The patients showed a significant positive correlation between brain activation changes and improvements in fixation stability in the visual cortex during training. These correlations were less pronounced on the long-term after training had ceased. We also found a significant increase in gray and white matter in the posterior cerebellum after training in the patient group. Our results show that functional and structural brain changes can be associated, at least on the short-term, with benefits of oculomotor and/or reading training in patients with central scotomata resulting from AMD.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftFrontiers in psychology : Perception Sience
Verlag:FRONTIERS RESEARCH FOUNDATION
Ort der Veröffentlichung:LAUSANNE
Band:4
Seitenbereich:S. 428
Datum17 Juli 2013
InstitutionenMedizin > Lehrstuhl für Augenheilkunde
Humanwissenschaften > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee
Identifikationsnummer
WertTyp
23882237PubMed-ID
10.3389/fpsyg.2013.00428DOI
Stichwörter / KeywordsHUMAN CEREBRAL-CORTEX; SURFACE-BASED ANALYSIS; CENTRAL SCOTOMA; CORTICAL SURFACE; GEOMETRICALLY ACCURATE; IMAGE REGISTRATION; COORDINATE SYSTEM; RETINAL LOCUS; VISUAL-CORTEX; READING SPEED; age-related macular degeneration; fMRI BOLD; voxel-based morphometry; cortical plasticity; aging
Dewey-Dezimal-Klassifikation100 Philosophie und Psychologie > 150 Psychologie
600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenJa
URN der UB Regensburgurn:nbn:de:bvb:355-epub-287761
Dokumenten-ID28776

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