scholarly journals Accommodative dynamics and attention: the influence of manipulating attentional capacity on accommodative lag and variability

2020 ◽  
Vol 40 (4) ◽  
pp. 510-518
Author(s):  
Beatriz Redondo ◽  
Jesús Vera ◽  
Rubén Molina ◽  
Leon N Davies ◽  
Raimundo Jiménez
Keyword(s):  
Attentional Capacity ◽  
Accommodative Lag

scholarly journals How do we measure attention? Using factor analysis to establish construct validity of neuropsychological tests

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Melissa Treviño ◽  
Xiaoshu Zhu ◽  
Yi Yi Lu ◽  
Luke S. Scheuer ◽  
Eliza Passell ◽  
...  
Keyword(s):  
Working Memory ◽  
Factor Analysis ◽  
Visual Search ◽  
Object Tracking ◽  
Visual Working Memory ◽  
Neuropsychological Tests ◽  
Digit Span ◽  
Digit Symbol ◽  
Attentional Capacity ◽  
Spatial Span

AbstractWe investigated whether standardized neuropsychological tests and experimental cognitive paradigms measure the same cognitive faculties. Specifically, do neuropsychological tests commonly used to assess attention measure the same construct as attention paradigms used in cognitive psychology and neuroscience? We built on the “general attention factor”, comprising several widely used experimental paradigms (Huang et al., 2012). Participants (n = 636) completed an on-line battery (TestMyBrain.org) of six experimental tests [Multiple Object Tracking, Flanker Interference, Visual Working Memory, Approximate Number Sense, Spatial Configuration Visual Search, and Gradual Onset Continuous Performance Task (Grad CPT)] and eight neuropsychological tests [Trail Making Test versions A & B (TMT-A, TMT-B), Digit Symbol Coding, Forward and Backward Digit Span, Letter Cancellation, Spatial Span, and Arithmetic]. Exploratory factor analysis in a subset of 357 participants identified a five-factor structure: (1) attentional capacity (Multiple Object Tracking, Visual Working Memory, Digit Symbol Coding, Spatial Span), (2) search (Visual Search, TMT-A, TMT-B, Letter Cancellation); (3) Digit Span; (4) Arithmetic; and (5) Sustained Attention (GradCPT). Confirmatory analysis in 279 held-out participants showed that this model fit better than competing models. A hierarchical model where a general cognitive factor was imposed above the five specific factors fit as well as the model without the general factor. We conclude that Digit Span and Arithmetic tests should not be classified as attention tests. Digit Symbol Coding and Spatial Span tap attentional capacity, while TMT-A, TMT-B, and Letter Cancellation tap search (or attention-shifting) ability. These five tests can be classified as attention tests.

scholarly journals Sustained attention, attentional selectivity, and attentional capacity across the lifespan

2012 ◽  
Vol 74 (8) ◽  
pp. 1570-1582 ◽  
Author(s):  
Laura P. McAvinue ◽  
Thomas Habekost ◽  
Katherine A. Johnson ◽  
Søren Kyllingsbæk ◽  
Signe Vangkilde ◽  
...  
Keyword(s):  
Sustained Attention ◽  
Attentional Capacity ◽  
Attentional Selectivity

Cognition and Communication

1997 ◽  
Vol 40 (5) ◽  
pp. 964-974 ◽  
Author(s):  
Judith R. Johnston ◽  
Linda B. Smith ◽  
Peggy Box
Keyword(s):  
Content Analysis ◽  
Language Development ◽  
Language Impairment ◽  
Specific Language Impairment ◽  
Object Type ◽  
Attentional Capacity ◽  
Specific Language ◽  
Normal Language

Ten children with specific language impairment and 10 children with normal language development were asked to describe objects so that a listener could select them. Each trial targeted two out of a group of three toys. The targeted objects were identical or were similar in size or color. Children in the two groups did not differ in referential success, although children in both groups found the size items more difficult. Content analysis of the messages did reveal differences in the referential strategies used most frequently. Children with specific language impairment were more likely to mention the attributes of each object separately, rather than to describe the characteristics common to a pair of objects. Children in both groups talked about separate objects more often when talking about size than about color or object type. Use of this strategy could indicate the effects of attentional capacity on children's solutions to communication tasks.

scholarly journals Influence of Virtual Reality on Visual Fuctions: Immersive Versus Non-Immersive Mode

2019 ◽  
Author(s):  
Hyeon Jeong Yoon ◽  
Jonghwa Kim ◽  
Sang Woo Park ◽  
Hwan Heo
Keyword(s):  
Virtual Reality ◽  
Correlation Analysis ◽  
Subjective Symptom ◽  
Subjective Symptoms ◽  
Dynamic Methods ◽  
Symptom Scores ◽  
Before And After ◽  
Accommodative Lag

Abstract Background To investigate differences in refraction, accommodative factors, ocular parameters, and subjective symptoms after using two types of virtual reality (VR) content with different perception depths. Methods Twenty-three volunteers, who played VR games in two modes (immersive and non-immersive) for 30 min, were enrolled. Ocular parameters were examined before and after using VR. Accommodative factors were measured using static and dynamic methods, and subjective symptoms were assessed using a questionnaire. Differences according to VR content and correlations between each ocular parameter were analyzed. Results There were no changes in refraction and accommodative factors after use of the VR. However, there was a significant increase in near point accommodation (NPA), near point convergence (NPC), and subjective symptom scores after using the immersive mode. Correlation analysis revealed that NPA and accommodative lag were increased in subjects with exophoria, and that subjects with high NPA or NPC were more likely to exhibit an increase in mean accommodative lag. Conclusions The use of VR for 30 min reduced NPA and NPC especially after the immersive mode was used. In addition, using VR could further increase accommodation lag and reduce the amplitude of accommodation and convergence in subjects with exophoria.

scholarly journals Expanding Attentional Capacity with Adaptive Training on a Multiple Object Tracking Task

2011 ◽  
Vol 11 (11) ◽  
pp. 292-292
Author(s):  
T. W. Thompson ◽  
M. L. Waskom ◽  
J. D. E. Gabrieli ◽  
G. A. Alvarez
Keyword(s):  
Object Tracking ◽  
Multiple Object Tracking ◽  
Tracking Task ◽  
Attentional Capacity ◽  
Adaptive Training ◽  
Multiple Object

Accommodative lag versus different stimuli

2007 ◽  
Vol 54 (9) ◽  
pp. 1299-1305 ◽  
Author(s):  
Ravi Chandra Bakaraju ◽  
Nisha S. Yeotikar ◽  
Vallam Srinivas Rao
Keyword(s):  
Accommodative Lag

scholarly journals Restricted attentional capacity within but not between sensory modalities

Nature ◽  
10.1038/42947 ◽  
1997 ◽  
Vol 387 (6635) ◽  
pp. 808-810 ◽  
Author(s):  
John Duncan ◽  
Sander Martens ◽  
Robert Ward
Keyword(s):  
Attentional Capacity ◽  
Sensory Modalities
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