Orienting of visual attention in dyslexia: evidence for asymmetric hemispheric control of attention

Andrea Facoetti; Massimo Turatto; Maria Luisa Lorusso; Gian Gastone Mascetti

doi:10.1007/s002210100700

Orienting of visual attention in dyslexia: evidence for asymmetric hemispheric control of attention

Experimental Brain Research ◽

10.1007/s002210100700 ◽

2001 ◽

Vol 138 (1) ◽

pp. 46-53 ◽

Cited By ~ 89

Author(s):

Andrea Facoetti ◽

Massimo Turatto ◽

Maria Luisa Lorusso ◽

Gian Gastone Mascetti

Keyword(s):

Visual Attention ◽

Hemispheric Control

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Visual Spatial Attention in Migraine Sufferers in Postictal and Interictal Phases: An Event-Related Potential Study

Journal of Psychophysiology ◽

10.1027//0269-8803.15.1.22 ◽

2001 ◽

Vol 15 (1) ◽

pp. 22-34 ◽

Cited By ~ 2

Author(s):

D.H. de Koning ◽

J.C. Woestenburg ◽

M. Elton

Keyword(s):

Cerebral Cortex ◽

Visual Attention ◽

Migraine Attack ◽

Spatial Attention ◽

Event Related Potential ◽

Significant Enhancement ◽

Pathophysiological Mechanism ◽

Attention Task ◽

Visual Spatial Attention ◽

Visual Spatial

Migraineurs with and without aura (MWAs and MWOAs) as well as controls were measured twice with an interval of 7 days. The first session of recordings and tests for migraineurs was held about 7 hours after a migraine attack. We hypothesized that electrophysiological changes in the posterior cerebral cortex related to visual spatial attention are influenced by the level of arousal in migraineurs with aura, and that this varies over the course of time. ERPs related to the active visual attention task manifested significant differences between controls and both types of migraine sufferers for the N200, suggesting a common pathophysiological mechanism for migraineurs. Furthermore, migraineurs without aura (MWOAs) showed a significant enhancement for the N200 at the second session, indicating the relevance of time of measurement within migraine studies. Finally, migraineurs with aura (MWAs) showed significantly enhanced P240 and P300 components at central and parietal cortical sites compared to MWOAs and controls, which seemed to be maintained over both sessions and could be indicative of increased noradrenergic activity in MWAs.

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