Activation during endogenous orienting of visual attention using symbolic pointers in the human parietal and frontal cortices: a functional magnetic resonance imaging study
| Autor: | Masako Matsuzawa, Tetsuo Moriya, Chikako Kato, Gary H. Glover, Kayako Matsuo, Toshiharu Nakai |
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| Rok vydání: | 2001 |
| Předmět: |
Adult
Male Symbolism Attentional shift Eye Movements genetic structures Central nervous system Posterior parietal cortex Endogeny Functional Laterality Premotor cortex Orientation Parietal Lobe medicine Humans Visual attention Attention Brain Mapping medicine.diagnostic_test General Neuroscience Magnetic Resonance Imaging Frontal Lobe Functional imaging medicine.anatomical_structure Space Perception Female Cues Nerve Net Psychology Functional magnetic resonance imaging Neuroscience Photic Stimulation Psychomotor Performance |
| Zdroj: | Neuroscience Letters. 314:5-8 |
| ISSN: | 0304-3940 |
| DOI: | 10.1016/s0304-3940(01)02207-8 |
| Popis: | Brain activation induced by endogenous orienting with a motor response was investigated by functional magnetic resonance imaging. We conducted four cued-attention experiments in which peripheral attention was caused by one of three symbolic pointers (eyes, squares as artificial eyes, or an arrow) that was predictive or not predictive of the target location. Attentional shift caused by the predictive and non-predictive cues induced right and left parietal activation across cue modalities, respectively. Regardless of the predictability of the target location, the eyes and arrow induced left parietal and frontal activation, and the arrow induced left parietal activation more than the squares. These results suggested that the left parieto-frontal network was involved in motor attention caused by natural or familiar pointers, whereas the right parietal cortex was involved in endogenous orienting. |
| Databáze: | OpenAIRE |
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