scispace - formally typeset
Search or ask a question
Topic

Attentional blink

About: Attentional blink is a research topic. Over the lifetime, 1346 publications have been published within this topic receiving 53064 citations. The topic is also known as: Attentional blinks.


Papers
More filters
Journal ArticleDOI
TL;DR: This work distinguished direct top-down effects of blink-associated motor signals on cortical activity from purely mechanical or optical effects of blinking on visual input by combining pupil-independent retinal stimulation with functional MRI (fMRI) in humans.

118 citations

Journal ArticleDOI
01 May 2003-Brain
TL;DR: Evaluated attentional, perceptual and neuropsychological capacities in Alzheimer's disease patients suggested that the working memory mechanisms in the second stage provide feedback control of input to category-specific perceptual processors in the first stage, consistent with two-stage models of visual perception.
Abstract: Visuospatial disorientation forces Alzheimer's disease patients to abandon independent activities. We found previously that limitations of ambulatory and vehicular navigation are linked to impaired visual motion processing in Alzheimer's disease. We now hypothesize that these perceptual impairments reflect temporal constraints on visual attention. We evaluated attentional, perceptual and neuropsychological capacities in 14 Alzheimer's disease patients and 12 age-matched older normal controls. The temporal dynamics of visual attention were measured using rapid serial visual presentation (RSVP) to assess the attentional blink. Visual processing for spatial orientation was assessed using perceptual thresholds for optic flow, the visual motion seen during observer self-movement. Alzheimer's disease patients show an exaggerated attentional blink during RSVP, identifying the first of two targets but missing the second target depending on the number of intervening distractors. They also show a unique form of attentional masking in which they miss the first target but identify the second, again depending on the number of intervening distractors. Both types of RSVP errors are correlated with selectively elevated optic flow thresholds in Alzheimer's disease patients. This suggests that temporal constraints on visual perception might impair optic flow analysis and contribute to spatial disorientation in Alzheimer's disease. These findings are consistent with two-stage models of visual perception, suggesting that the working memory mechanisms in the second stage provide feedback control of input to category-specific perceptual processors in the first stage.

117 citations

Journal ArticleDOI
TL;DR: This study introduces a new signal detection measure termed subjective discriminability of invisibility (SDI) that allows one to distinguish between subjective blindness due to reduction of sensory signals or to lack of attentional access to sensory signals.

115 citations

Journal ArticleDOI
TL;DR: The present study examined if the occurrence of an AB depends on T1 exposure duration, the requirement to perform a task for T1, and awareness of T1 and concluded that the minimum requirement for an AB deficit is T1 awareness.
Abstract: The attentional blink (AB) refers to the finding that observers often miss the second of two masked visual targets (T1 and T2, e.g., letters) appearing within 200-500 ms. Although the presence of a T1 mask is thought to be required for this effect, we recently found that an AB deficit can be observed even in the absence of a T1 mask if T2 is shown very briefly and followed by a pattern mask (M. R. Nieuwenstein, M. C. Potter, & J. Theeuwes, 2009). Using such a sensitive T2 task, the present study sought to determine the minimum requirements for eliciting an AB deficit. To this end, we examined if the occurrence of an AB depends on T1 exposure duration, the requirement to perform a task for T1, and awareness of T1. The results showed that an AB deficit occurs regardless of the presentation duration of T1, and regardless of whether there is a T1 task. A boundary condition for the occurrence of an AB was found in conscious awareness of T1. With a near-threshold detection task for T1, attention blinked when T1 was seen, but not when T1 was missed. Accordingly, we conclude that the minimum requirement for an AB deficit is T1 awareness.

115 citations

Journal ArticleDOI
TL;DR: The hypothesis that meditation practice can alter the efficiency with which attentional resources are distributed and help to overcome age-related attentional deficits in the temporal domain is supported.

113 citations


Network Information
Related Topics (5)
Visual perception
20.8K papers, 997.2K citations
89% related
Working memory
26.5K papers, 1.6M citations
87% related
Visual cortex
18.8K papers, 1.2M citations
83% related
Functional magnetic resonance imaging
15.4K papers, 1.1M citations
81% related
Prefrontal cortex
24K papers, 1.9M citations
80% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202312
202266
202148
202043
201945
201840