This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1177/0269881109105397 in citations.
The effect of nicotine on visuospatial attention in patients with chronic spatial neglect depends upon lesion location
The effect of nicotine on visuospatial attention in patients with chronic spatial neglect depends upon lesion location
The deficit to reorient attention from ipsilesional to contralesional space is one key feature of the spatial neglect syndrome. As previous studies suggest that reorienting of visuospatial attention is modulated by cholinergic neurotransmission, we investigated whether cholinergic stimulation with n...
Saved in:
Personal Name(s): | Vossel, S. |
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Kukolja, J. / Thimm, M. / Thiel, C.M. / Fink, G. R. | |
Contributing Institute: |
Kognitive Neurowissenschaften; INM-3 |
Published in: | Journal of psychopharmacology, 24 (2010) S. 1357 - 1365 |
Imprint: |
London [u.a.]
Sage
2010
|
Physical Description: |
1357 - 1365 |
DOI: |
10.1177/0269881109105397 |
PubMed ID: |
19477881 |
Document Type: |
Journal Article |
Research Program: |
(Dys-)function and Plasticity Funktion und Dysfunktion des Nervensystems |
Series Title: |
Journal of Psychopharmacology
24 |
Subject (ZB): | |
Publikationsportal JuSER |
The deficit to reorient attention from ipsilesional to contralesional space is one key feature of the spatial neglect syndrome. As previous studies suggest that reorienting of visuospatial attention is modulated by cholinergic neurotransmission, we investigated whether cholinergic stimulation with nicotine (Nicorette 2 mg, Pharmacia/Pfizer, Helsingborg, Sweden) facilitates attentional reorienting in spatial neglect patients. Nine nonsmoking patients with stable neglect symptoms were investigated in a within-subject cross-over design. We used a location-cueing paradigm and analysed reaction time (RT) differences between validly and invalidly cued, as well as between neutrally cued and uncued targets as a function of hemifield and drug. Moreover, since the nicotine effect is mediated by parietal brain areas in healthy subjects, we tested whether lesion location influences the pharmacological effect. Nicotine speeded RTs in valid and invalid trials nonspecifically, without modulating the validity effect in the location-cueing task in the whole group of patients. Lesion-symptom mapping revealed a relationship between lesion site and the pharmacological effect on reorienting to contralesional space in right parietal and temporal brain regions. We conclude that in patients with chronic spatial neglect the performance in the location-cueing paradigm can be modulated by a cholinergic stimulant provided that the lesion spares right parietal and temporal cortex. |