Publication Date:
2014-04-26
Description:
How we attend to objects and their features that cannot be separated by location is not understood. We presented two temporally and spatially overlapping streams of objects, faces versus houses, and used magnetoencephalography and functional magnetic resonance imaging to separate neuronal responses to attended and unattended objects. Attention to faces versus houses enhanced the sensory responses in the fusiform face area (FFA) and parahippocampal place area (PPA), respectively. The increases in sensory responses were accompanied by induced gamma synchrony between the inferior frontal junction, IFJ, and either FFA or PPA, depending on which object was attended. The IFJ appeared to be the driver of the synchrony, as gamma phases were advanced by 20 ms in IFJ compared to FFA or PPA. Thus, the IFJ may direct the flow of visual processing during object-based attention, at least in part through coupled oscillations with specialized areas such as FFA and PPA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baldauf, Daniel -- Desimone, Robert -- P30EY2621/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 2014 Apr 25;344(6182):424-7. doi: 10.1126/science.1247003. Epub 2014 Apr 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, 02139 MA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24763592" target="_blank"〉PubMed〈/a〉
Keywords:
Adult
;
*Attention
;
Brain/*physiology
;
Brain Mapping
;
Diffusion Tensor Imaging
;
Female
;
Frontal Lobe/*physiology
;
Functional Laterality
;
Humans
;
Magnetic Resonance Imaging
;
Magnetoencephalography
;
Male
;
Temporal Lobe/*physiology
;
Visual Cortex/physiology
;
Visual Perception
;
Young Adult
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
