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dc.contributor.authorWeber, B.-
dc.contributor.authorTreyer, V.-
dc.contributor.authorOberholzer, N.-
dc.contributor.authorJärmann, Thomas-
dc.contributor.authorBoesiger, P.-
dc.contributor.authorBrugger, P.-
dc.contributor.authorRegard, M.-
dc.contributor.authorBuck, A.-
dc.contributor.authorSavazzi, S.-
dc.contributor.authorMarzi, C. A.-
dc.date.accessioned2018-04-10T14:24:58Z-
dc.date.available2018-04-10T14:24:58Z-
dc.date.issued2005-
dc.identifier.issn0898-929Xde_CH
dc.identifier.issn1530-8898de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/5006-
dc.description.abstractWhen both detections and responses to visual stimuli are performed within one and the same hemisphere, manual reaction times (RTs) are faster than when the two operations are carried out in different hemispheres. A widely accepted explanation for this difference is that it reflects the time lost in callosal transmission. Interhemispheric transfer time can be estimated by subtracting RTs for uncrossed from RTs for crossed responses (crossed-uncrossed difference, or CUD). In the present study, we wanted to ascertain the role of spatial attention in affecting the CUD and to chart the brain areas whose activity is related to these attentional effects on interhemispheric transfer. To accomplish this, we varied the proportion of crossed and uncrossed trials in different blocks. With this paradigm subjects are likely to focus attention either on the hemifield contralateral to the responding hand (blocks with 80% crossed trials) or on the ipsilateral hemifield (blocks with 80% uncrossed trials). We found an inverse correlation between the proportion of crossed trials in a block and the CUD and this effect can be attributed to spatial attention. As to the imaging results, we found that in the crossed minus uncrossed subtraction, an operation that highlights the neural processes underlying interhemispheric transfer, there was an activation of the genu of the corpus callosum as well as of a series of cortical areas. In a further commonality analysis, we assessed those areas which were activated specifically during focusing of attention onto one hemifield either contra- or ipsilateral to the responding hand. We found an activation of a number of cortical and subcortical areas, notably, parietal area BA 7 and the superior colliculi. We believe that the main thrust of the present study is to have teased apart areas important in interhemispheric transmission from those involved in spatial attention.de_CH
dc.language.isoende_CH
dc.publisherMIT Pressde_CH
dc.relation.ispartofJournal of Cognitive Neurosciencede_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectAdultde_CH
dc.subjectAnalysis of variancede_CH
dc.subjectAttentionde_CH
dc.subjectBrainde_CH
dc.subjectDominance, verebralde_CH
dc.subjectFemalede_CH
dc.subjectHumansde_CH
dc.subjectImage processing, computeraAssistedde_CH
dc.subjectMagnetic Resonance Imagingde_CH
dc.subjectMalede_CH
dc.subjectOxygende_CH
dc.subjectPhotic stimulationde_CH
dc.subjectPsychomotor performancede_CH
dc.subjectReaction timede_CH
dc.subjectSpatial behaviorde_CH
dc.subjectTransfer (psychology)de_CH
dc.subjectVisual perceptionde_CH
dc.subject.ddc616.8: Neurologie und Krankheiten des Nervensystemsde_CH
dc.titleAttention and interhemispheric transfer : a behavioral and fMRI studyde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
dc.identifier.doi10.1162/0898929052880002de_CH
dc.identifier.pmid15701243de_CH
zhaw.funding.euNode_CH
zhaw.issue1de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end123de_CH
zhaw.pages.start113de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume17de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
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Weber, B., Treyer, V., Oberholzer, N., Järmann, T., Boesiger, P., Brugger, P., Regard, M., Buck, A., Savazzi, S., & Marzi, C. A. (2005). Attention and interhemispheric transfer : a behavioral and fMRI study. Journal of Cognitive Neuroscience, 17(1), 113–123. https://doi.org/10.1162/0898929052880002
Weber, B. et al. (2005) ‘Attention and interhemispheric transfer : a behavioral and fMRI study’, Journal of Cognitive Neuroscience, 17(1), pp. 113–123. Available at: https://doi.org/10.1162/0898929052880002.
B. Weber et al., “Attention and interhemispheric transfer : a behavioral and fMRI study,” Journal of Cognitive Neuroscience, vol. 17, no. 1, pp. 113–123, 2005, doi: 10.1162/0898929052880002.
WEBER, B., V. TREYER, N. OBERHOLZER, Thomas JÄRMANN, P. BOESIGER, P. BRUGGER, M. REGARD, A. BUCK, S. SAVAZZI und C. A. MARZI, 2005. Attention and interhemispheric transfer : a behavioral and fMRI study. Journal of Cognitive Neuroscience. 2005. Bd. 17, Nr. 1, S. 113–123. DOI 10.1162/0898929052880002
Weber, B., V. Treyer, N. Oberholzer, Thomas Järmann, P. Boesiger, P. Brugger, M. Regard, A. Buck, S. Savazzi, and C. A. Marzi. 2005. “Attention and Interhemispheric Transfer : A Behavioral and fMRI Study.” Journal of Cognitive Neuroscience 17 (1): 113–23. https://doi.org/10.1162/0898929052880002.
Weber, B., et al. “Attention and Interhemispheric Transfer : A Behavioral and fMRI Study.” Journal of Cognitive Neuroscience, vol. 17, no. 1, 2005, pp. 113–23, https://doi.org/10.1162/0898929052880002.


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