Effects of nonspatial selective and divided visual attention on fMRI BOLD responses

Experimental Brain Research
Riklef WeerdaMark W Greenlee

Abstract

Using an uncertainty paradigm and functional magnetic resonance imaging (fMRI) we studied the effect of nonspatial selective and divided visual attention on the activity of specific areas of human extrastriate visual cortex. The stimuli were single ovals that differed from an implicit standard oval in either colour or width. The subjects' task was to classify the current stimulus as one of two possible alternatives per stimulus dimension. Three different experimental conditions were conducted: "colour-certainty", "shape-certainty" and "uncertainty". In all experimental conditions, the stimulus differed in only one stimulus dimension per trial. In the two certainty conditions, the subjects knew in advance which dimension this would be. During the uncertainty condition they had no such previous knowledge and had to monitor both dimensions simultaneously. Statistical analysis of the fMRI data (with SPM2) revealed a modest effect of the attended stimulus dimension on the neural activity in colour sensitive area V4 (more activity during attention to colour) and in shape sensitive area LOC (more activity during attention to shape). Furthermore, cortical areas known to be related to attention and working memory processes (e.g., latera...Continue Reading

References

Oct 1, 1989·Documenta Ophthalmologica. Advances in Ophthalmology·G E Holder, J R Condon
Jan 1, 1988·Perception·R VogelsG A Orban
Sep 1, 1985·Journal of the Optical Society of America. A, Optics and Image Science·D G Pelli
Aug 29, 1995·Proceedings of the National Academy of Sciences of the United States of America·R MalachR B Tootell
Apr 1, 1996·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·J P Thomas, L A Olzak
Jan 13, 1998·Journal of Experimental Psychology. Human Perception and Performance·S Magnussen, M W Greenlee
Aug 26, 1998·Brain Research. Cognitive Brain Research·M D'EspositoJ Lease
Jan 29, 2000·The European Journal of Neuroscience·A Bartels, S Zeki
Jun 10, 2000·Journal of Neurophysiology·A C Huk, D J Heeger
Jul 19, 2000·Proceedings of the National Academy of Sciences of the United States of America·B J CaseyE A Crone
Aug 6, 2000·Vision Research·M J MorganS P McKee
Sep 29, 2000·Vision Research·J P ThomasM W Greenlee
Nov 9, 2000·Proceedings of the National Academy of Sciences of the United States of America·M H SohnC S Carter
Mar 17, 2001·Nature Reviews. Neuroscience·N Kanwisher, E Wojciulik
Apr 27, 2001·Vision Research·K Grill-SpectorN Kanwisher
Feb 1, 2002·Acta Psychologica·Manuel J Blanco, David Soto
Feb 13, 2002·Cerebral Cortex·R WeidnerD Y von Cramon
Jul 26, 2003·Brain Research. Cognitive Brain Research·Jennifer T CoullAnna C Nobre
Nov 20, 2003·Neuroreport·Tobias H DonnerStephan A Brandt

❮ Previous
Next ❯

Citations

May 16, 2008·Brain Research·Britta HahnElliot A Stein
Feb 26, 2015·The Journal of Laryngology and Otology·D Veivers

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.