Show Reference: "Spatial Attention and Audiovisual Processing"

See the CiteULike entry for more info, PDF links, BibTex etc.

There are voluntary (endogenous) and reflexive (exogenous) mechanisms of guiding selective attention.

Santangelo and Macaluso describe typical experiments for studying visual attention.

Frontal eye fields (FEF) and intraparietal sulcus (IPS) have been associated with voluntary orienting of visual attention.

Santangelo and Macaluso provide a rewiew on the recent literature on visual and auditory attention.

Frontoparietal regions play a key role in spatial orienting in unisensory studies of visual and auditory attention.

There seems to be also modality-specific attention which globally de-activates attention in one modality and activates it in the other.

Localized auditory cues can exogenously orient visual attention.

Santangelo and Macaluso state that multisensory integration and attention are probably separate processes.

Task-irrelevant visual cues do not affect visual orienting (visual spatial attention). Task-irrelevant auditory cues, however, seem to do so.

Santangelo and Macaluso suggest that whether or not the effects of endogenous attention dominate the ones of bottom-up processing (automatic processing) depends on semantic association, be it linguistic or learned association (like dogs and barking, cows and mooing).

Santangelo and Macaluso state that "the same frontoparietal attention control systems are ... activated in spatial orienting tasks for both the visual and auditory modality..."

Cognitive factors can influence multisensory processing.

One function, or, what Santangelo and macaluso call `the key element', of selective attention is filtering out distracters—ie. noise filtering.

Stimuli which are non-predictive in a task—like localized stimuli in one modality which are non-predictive of the position of the target in another modality—can enhance performance in valid instances of that task—like detecting targets which by coincidence are where the non-predictive stimulus was.

This demonstrates the existence of exogenous attention.

When asked to ignore stimuli in the visual modality and attend to the auditory modality, increased activity in the auditory temporal cortex and decreased activity in the visual occipital cortex can be observed (and vice versa).