Temporal Dynamics of Reflexive Attention Shifts: A Dual-Stream Rapid Serial Visual Presentation Exploration

2002 ◽  
Vol 13 (2) ◽  
pp. 176-179 ◽  
Author(s):  
Raymond M. Klein ◽  
Bruce Dick
Keyword(s):  
Rapid Serial Visual Presentation ◽  
Inhibition Of Return ◽  
Temporal Dynamics ◽  
Visual Presentation ◽  
Uncued Location ◽  
Temporal Precision ◽  
Reflexive Attention ◽  
Unique Event ◽  
Exogenous Cuing ◽  
Attention Shifts

We combined a prototypical exogenous cuing procedure with rapid serial visual presentation (RSVP) to provide a precise characterization of the temporal dynamics of reflexive attention shifts. The novel paradigm thus created has several useful properties, most notably that the physical presentation of the target is neither an onset nor a unique event and that temporal precision is provided without the requirement for a speeded response. A biphasic pattern was observed, with early benefits followed by later costs (inhibition of return) at the cued location relative to the uncued location. The finding of inhibition of return in this paradigm disproves the assertion that inhibition of return is merely a reluctance to respond in the target's direction. It may be partly that, but encoding mechanisms linked to attention must also be involved.

scholarly journals 'Pseudoextinction': Asymmetries in simultaneous attentional selection

2016 ◽  
Author(s):  
Patrick T. Goodbourn ◽  
Alex O. Holcombe ◽  
Charlie Ludowici
Keyword(s):  
Visual Field ◽  
Rapid Serial Visual Presentation ◽  
Visual Presentation ◽  
Mixture Modeling ◽  
Attentional Selection ◽  
Right Visual Field ◽  
Temporal Precision ◽  
The Right

We report robust visual field asymmetries associated with selectingsimultaneous targets. One letter embedded in a rapid serial visual presentation(RSVP) of letters was encircled by a white ring, cueing it as the target to report. In some conditions, 2 RSVP streams were presented concurrently, and targets appearedsimultaneously in both. When only 1 stream was cued, performance was similarregardless of whether it was in the left or right visual field. Cueing 2 streams barelyaffected performance in the left stream, but performance in the right stream sufferedmarkedly. We term this phenomenon pseudoextinction, by analogy to pseudoneglectwhereby observers bisect lines to the left of center. Such attentional asymmetries areoften believed to originate from a processing imbalance between the 2 cerebralhemispheres. But pseudoextinction also occurred with vertically arrayed streams, withhigher efficacy in the superior than in the inferior stream. Mixture modeling of errorsindicated that pseudoextinction did not affect the temporal precision or latency ofselection episodes; rather, only the efficacy of selection suffered. These findings leadus to suggest that pseudoextinction arises because perceptual traces are activatedsimultaneously in a visual buffer but must be tokenized serially. Observers succeed inselecting simultaneous targets because trace activation occurs in parallel. However,observers often fail to report both targets because tokenization proceeds serially:While 1 target is being tokenized, the other’s trace may decay below the activationlevel necessary for tokenization.

Temporal Allocation of Visual Attention in Adult Attention Deficit Hyperactivity Disorder.

2001 ◽  
Vol 13 (3) ◽  
pp. 298-305 ◽  
Author(s):  
Deidre E. Hollingsworth ◽  
Sean P. McAuliffe ◽  
Barbara J. Knowlton
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Visual Attention ◽  
Rapid Serial Visual Presentation ◽  
Attention Deficit ◽  
Visual Presentation ◽  
Adhd Group ◽  
Reflexive Attention ◽  
Hyperactivity Disorder ◽  
Controlled Attention ◽  
Close Temporal Proximity

In two experiments, we examined the ability of adults with attention deficit hyperactivity disorder (ADHD) to preocess multiple targets appearing in a rapid serial visual presentation (RSVP) stream. Using a standard attentional blink (AB) task, subjects were required to both identify a target in the RSVP stream and detect a probe appearing in one of several posttarget serial positions. In Experiment 1, ADHD adults exhibited a protracted AB compared to controls, in that their probe detection did not improve as a function of increasing probe-to-target intervals (450-720 msec). In Experiment 2, the ADHD group performed as well as controls in detectin probes appearing immediately (i.e., 90 msec) after the target. Taken together, the results demonstrate that adults with ADHD exhibit a selective deficit in rapidly shifting attention between the target and the probe, when two appear several hundred milliseconds apart. These results suggest that adults with ADHD can use automatic (reflexive) attention to detect items in close temporal proximity in the RSVP stream, but have difficulty allocating controlled attention to multiple stimuli separated by several hundred milliseconds.

Conceptual short-term memory (CSTM) supports core claims of Christiansen and Chater

2016 ◽  
Vol 39 ◽  
Author(s):  
Mary C. Potter
Keyword(s):  
Working Memory ◽  
Rapid Serial Visual Presentation ◽  
Language Comprehension ◽  
Short Term Memory ◽  
Visual Presentation ◽  
Long Term Memory ◽  
Short Term ◽  
Term Memory ◽  
Use Of Knowledge

AbstractRapid serial visual presentation (RSVP) of words or pictured scenes provides evidence for a large-capacity conceptual short-term memory (CSTM) that momentarily provides rich associated material from long-term memory, permitting rapid chunking (Potter 1993; 2009; 2012). In perception of scenes as well as language comprehension, we make use of knowledge that briefly exceeds the supposed limits of working memory.

Sign in / Sign up

Export Citation Format

Share Document