TY - JOUR
T1 - Spatial re-orienting of visual attention along the horizontal or the vertical axis
AU - Macaluso, E.
AU - Patria, F.
PY - 2007/6
Y1 - 2007/6
N2 - Neuroimaging data indicate functional segregation between voluntary and stimulus-driven control of spatial attention in dorsal and ventral fronto-parietal regions, respectively. While recent evidences demonstrated location-specific attentional effects in dorsal regions, little is known about any location or direction selectivity within the ventral network. Here, we used a spatial cueing paradigm to investigate stimulus-driven spatial re-orienting along different axes (horizontal or vertical). We found that re-orienting of attention activated the ventral attentional network, irrespective of axis-orientation. Statistical comparisons between homologous regions in the two hemispheres revealed significant main effects of attention re-orienting (common activation for the two hemispheres), irrespective of leftward or rightward re-orienting along the horizontal axis, or re-orienting along the vertical axis. We conclude that in healthy volunteers, a bilateral ventral network controls spatial covert re-orienting, and that this system is multidirectional.
AB - Neuroimaging data indicate functional segregation between voluntary and stimulus-driven control of spatial attention in dorsal and ventral fronto-parietal regions, respectively. While recent evidences demonstrated location-specific attentional effects in dorsal regions, little is known about any location or direction selectivity within the ventral network. Here, we used a spatial cueing paradigm to investigate stimulus-driven spatial re-orienting along different axes (horizontal or vertical). We found that re-orienting of attention activated the ventral attentional network, irrespective of axis-orientation. Statistical comparisons between homologous regions in the two hemispheres revealed significant main effects of attention re-orienting (common activation for the two hemispheres), irrespective of leftward or rightward re-orienting along the horizontal axis, or re-orienting along the vertical axis. We conclude that in healthy volunteers, a bilateral ventral network controls spatial covert re-orienting, and that this system is multidirectional.
KW - Attention
KW - fMRI
KW - Lateralisation
KW - Space
KW - Vision
UR - http://www.scopus.com/inward/record.url?scp=34249897743&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34249897743&partnerID=8YFLogxK
U2 - 10.1007/s00221-006-0841-8
DO - 10.1007/s00221-006-0841-8
M3 - Article
C2 - 17262217
AN - SCOPUS:34249897743
VL - 180
SP - 23
EP - 34
JO - Experimental Brain Research
JF - Experimental Brain Research
SN - 0014-4819
IS - 1
ER -