Top-Down Versus Bottom-Up Control of Attention in the Prefrontal and Posterior Parietal Cortices

@article{citeulike:1197981, abstract = {Attention can be focused volitionally by "top-down" signals derived from task demands and automatically by "bottom-up" signals from salient stimuli. The frontal and parietal cortices are involved, but their neural activity has not been directly compared. Therefore, we recorded from them simultaneously in monkeys. Prefrontal neurons reflected the target location first during top-down attention, whereas parietal neurons signaled it earlier during bottom-up attention. Synchrony between frontal and parietal areas was stronger in lower frequencies during top-down attention and in higher frequencies during bottom-up attention. This result indicates that top-down and bottom-up signals arise from the frontal and sensory cortex, respectively, and different modes of attention may emphasize synchrony at different frequencies. 10.1126/science.1138071}, author = {Buschman, Timothy J. and Miller, Earl K. }, citeulike-article-id = {1197981}, doi = {10.1126/science.1138071}, journal = {Science}, keywords = {cogneuro}, month = {March}, number = {5820}, pages = {1860--1862}, posted-at = {2008-02-01 06:18:51}, priority = {3}, title = {Top-Down Versus Bottom-Up Control of Attention in the Prefrontal and Posterior Parietal Cortices}, url = {http://dx.doi.org/10.1126/science.1138071}, volume = {315}, year = {2007} }

TY - JOUR ID - citeulike:1197981 L3 - citeulike-article-id:1197981 TI - Top-Down Versus Bottom-Up Control of Attention in the Prefrontal and Posterior Parietal Cortices JF - Science VL - 315 IS - 5820 SP - 1860 EP - 1862 N2 - Attention can be focused volitionally by "top-down" signals derived from task demands and automatically by "bottom-up" signals from salient stimuli. The frontal and parietal cortices are involved, but their neural activity has not been directly compared. Therefore, we recorded from them simultaneously in monkeys. Prefrontal neurons reflected the target location first during top-down attention, whereas parietal neurons signaled it earlier during bottom-up attention. Synchrony between frontal and parietal areas was stronger in lower frequencies during top-down attention and in higher frequencies during bottom-up attention. This result indicates that top-down and bottom-up signals arise from the frontal and sensory cortex, respectively, and different modes of attention may emphasize synchrony at different frequencies. 10.1126/science.1138071 KW - cogneuro AU - Buschman, Timothy AU - Miller, Earl PY - 2007/03/30/ UR - http://dx.doi.org/10.1126/science.1138071 ER -