Modeling the Cognitive Complexity of Visual Displays

1986 ◽  
Vol 30 (7) ◽  
pp. 675-678 ◽  
Author(s):  
Robert G. Eggleston ◽  
Richard A. Chechile ◽  
Rebecca N. Fleischman
Keyword(s):  
Cognitive Complexity ◽  
Task Difficulty ◽  
Semantic Network ◽  
Visual Display ◽  
Visual Displays

An approach for measuring the cognitive complexity of visual display formats is presented. The approach involves modeling both the knowledge that can be extracted from a format and the knowledge an operator brings to a task. A semantic network formalism is developed to capture task-relevant knowledge, from which four orthogonal predictor measures of cognitive complexity are derived. In an experiment, seven different avionic missions, performed with the aid of a horizontal situation display, were studied, and three of the predictor measures were found to correlate significantly with observed task difficulty. The results indicate that a semantic network formalism can be used to produce an objective metric of format quality in terms of cognitive complexity.

Visual Display Format Affects the Ability of Anesthesiologists to Detect Acute Physiologic Changes: A Laboratory Study Employing a Clinical Display Simulator

1995 ◽  
Vol 83 (6) ◽  
pp. 1184-1193 ◽  
Author(s):  
Keerti Gurushanthaiah ◽  
Matthew B. Weinger ◽  
Carl E. Englund
Keyword(s):  
Laboratory Study ◽  
Visual Display ◽  
Visual Displays ◽  
Display Format ◽  
Differential Effects ◽  
Monitoring Performance

Abstract Background Anesthesiologists use data presented on visual displays to monitor patients' physiologic status. Although studies in nonmedical fields have suggested differential effects on performance among display formats, few studies have examined the effect of display format on anesthesiologist monitoring performance.

Evaluation of Auditory, Visual, and Dual-Mode Displays for Prolonged Sonar Monitoring in Repeated Sessions

1975 ◽  
Vol 17 (5) ◽  
pp. 425-437 ◽  
Author(s):  
W. Peter Colquhoun
Keyword(s):  
Common Factor ◽  
Visual Display ◽  
Warning Stimulus ◽  
Visual Displays ◽  
Dual Mode ◽  
Auditory Displays ◽  
Sensory Mode ◽  
Within Subjects ◽  
Signal Detectability

Using a task which closely simulated the actual output from a sonar device, the performance of 12 subjects was observed for a total of 115 hr in repeated prolonged monitoring sessions under auditory, visual, and dual-mode display conditions. Despite an underlying basic superiority of signal discriminability on the visual display, and the occurrence of long-term practice effects, detection rate was consistently and substantially higher under the auditory condition, and higher again with the dual-mode display. These results are similar to those obtained by earlier workers using artificial laboratory tasks for shorter periods, and are consistent with the notion that auditory displays have greater attention-gaining capacity in a “vigilance” situation. A further comparison of the auditory and visual displays was then made in an “alerted” situation, where the possible occurrence of a signal was indicated by a warning stimulus in the alternative sensory mode. Ten subjects were observed for a total of 57 hr in these conditions, under which performance was found to be clearly superior with the visual display. Cross-modal correlations of performance indicated the presence of a common factor of signal detectability within subjects. It was concluded that where efficiency both in the initial detection of targets and their subsequent identification and tracking are equally important, the best solution would seem to be to retain both auditory and visual displays and to ensure that these are monitored concurrently.

scholarly journals Distinct Neural Correlates of Linguistic and Non-Linguistic Demand

2021 ◽  
pp. 1-24
Author(s):  
Ian A. Quillen ◽  
Melodie Yen ◽  
Stephen M. Wilson
Keyword(s):  
Task Difficulty ◽  
Right Hemisphere ◽  
Semantic Network ◽  
Inferior Frontal Gyrus ◽  
Neural Correlates ◽  
Normal Individuals ◽  
Linguistic Demand ◽  
Neurologically Normal ◽  
The Right ◽  
Temporal Language

In this study, we investigated how the brain responds to task difficulty in linguistic and non-linguistic contexts. This is important for the interpretation of functional imaging studies of neuroplasticity in post-stroke aphasia, because of the inherent difficulty of matching or controlling task difficulty in studies with neurological populations. Twenty neurologically normal individuals were scanned with fMRI as they performed a linguistic task and a non-linguistic task, each of which had two levels of difficulty. Critically, the tasks were matched across domains (linguistic, non-linguistic) for accuracy and reaction time, such that the differences between the easy and difficult conditions were equivalent across domains. We found that non-linguistic demand modulated the same set of multiple demand (MD) regions that have been identified in many prior studies. In contrast, linguistic demand modulated MD regions to a much lesser extent, especially nodes belonging to the dorsal attention network. Linguistic demand modulated a subset of language regions, with the left inferior frontal gyrus most strongly modulated. The right hemisphere region homotopic to Broca’s area was also modulated by linguistic but not non-linguistic demand. When linguistic demand was mapped relative to non-linguistic demand, we also observed domain by difficulty interactions in temporal language regions as well as a widespread bilateral semantic network. In sum, linguistic and non-linguistic demand have strikingly different neural correlates. These findings can be used to better interpret studies of patients recovering from aphasia. Some reported activations in these studies may reflect task performance differences, while others can be more confidently attributed to neuroplasticity.

Representation and Display of Digital Images of Cultural Heritage: A Semantic Enrichment Approach

2021 ◽  
Vol 48 (3) ◽  
pp. 231-247
Author(s):  
Xu Tan ◽  
Xiaoxi Luo ◽  
Xiaoguang Wang ◽  
Hongyu Wang ◽  
Xilong Hou
Keyword(s):  
Cultural Heritage ◽  
Digital Images ◽  
Semantic Network ◽  
Semantic Representation ◽  
Semantic Annotation ◽  
Visual Display ◽  
Semantic Content ◽  
Entity Recognition ◽  
Semantic Enrichment ◽  
Fine Grained

Digital images of cultural heritage (CH) contain rich semantic information. However, today’s semantic representations of CH images fail to fully reveal the content entities and context within these vital surrogates. This paper draws on the fields of image research and digital humanities to propose a systematic methodology and a technical route for semantic enrichment of CH digital images. This new methodology systematically applies a series of procedures including: semantic annotation, entity-based enrichment, establishing internal relations, event-centric enrichment, defining hierarchy relations between properties text annotation, and finally, named entity recognition in order to ultimately provide fine-grained contextual semantic content disclosure. The feasibility and advantages of the proposed semantic enrichment methods for semantic representation are demonstrated via a visual display platform for digital images of CH built to represent the Wutai Mountain Map, a typical Dunhuang mural. This study proves that semantic enrichment offers a promising new model for exposing content at a fine-grained level, and establishing a rich semantic network centered on the content of digital images of CH.

scholarly journals Deceptive vocal duets and multimodal display in a songbird

2017 ◽  
Vol 284 (1864) ◽  
pp. 20171774 ◽  
Author(s):  
Paweł Ręk ◽  
Robert D. Magrath
Keyword(s):  
Group Living ◽  
Visual Display ◽  
Reliable Information ◽  
Song Type ◽  
Visual Displays ◽  
Visual Component ◽  
Song Types ◽  
Multimodal Signalling ◽  
Australian Magpie ◽  
Vocal Duets

Many group-living animals cooperatively signal to defend resources, but what stops deceptive signalling to competitors about coalition strength? Cooperative-signalling species include mated pairs of birds that sing duets to defend their territory. Individuals of these species sometimes sing ‘pseudo-duets’ by mimicking their partner's contribution, but it is unknown if these songs are deceptive, or why duets are normally reliable. We studied pseudo-duets in Australian magpie-larks, Grallina cyanoleuca , and tested whether multimodal signalling constrains deception. Magpie-larks give antiphonal duets coordinated with a visual display, with each sex typically choosing a different song type within the duet. Individuals produced pseudo-duets almost exclusively during nesting when partners were apart, but the two song types were used in sequence rather than antiphonally. Strikingly, birds hid and gave no visual displays, implying deceptive suppression of information. Acoustic playbacks showed that pseudo-duets provoked the same response from residents as true duets, regardless of whether they were sequential or antiphonal, and stronger response than that to true duets consisting of a single song type. By contrast, experiments with robot models showed that songs accompanied by movements of two birds prompted stronger responses than songs accompanied by movements of one bird, irrespective of the number of song types or singers. We conclude that magpie-larks used deceptive pseudo-duets when partners were apart, and suppressed the visual display to maintain the subterfuge. We suggest that the visual component of many species' duets provides the most reliable information about the number of signallers and may have evolved to maintain honesty in duet communication.

scholarly journals Assessing the cognitive complexity of cyber range environments

2019 ◽  
Vol 17 (1) ◽  
pp. 39-46
Author(s):  
Antonio Roque ◽  
Douglas Stetson ◽  
Daniel J Hannon
Keyword(s):  
Cognitive Complexity ◽  
Task Difficulty ◽  
Human Factor ◽  
Assessment Method ◽  
Operating Environment ◽  
Conceptual Foundation ◽  
Human Factor Engineering ◽  
Operating Environments ◽  
Key Concepts ◽  
Cyber Range

We present a conceptual foundation and empirical framework for modeling cognitive complexity in cyber range event operating environments. Definitions of key concepts, such as cognitive complexity, task difficulty, and Blue Team cognitive workload, are informed by the literature of human factor engineering. This is followed by an approach to assessing cognitive complexity as experienced by a Blue Team in a given cyber range event operating environment, and a validation of that assessment method.

Convergence to the tiniest detail: vocal sac structure in torrent-dwelling frogs

2019 ◽  
Author(s):  
Agustín J Elias-Costa ◽  
Julián Faivovich
Keyword(s):  
Background Noise ◽  
Evolutionary History ◽  
Visual Display ◽  
Character State ◽  
Visual Displays ◽  
State Reconstruction ◽  
Ancestral Character State ◽  
History Of ◽  
Ancestral Character State Reconstruction ◽  
Detection And Recognition

Abstract Cascades and fast-flowing streams impose severe restrictions on acoustic communication, with loud broadband background noise hampering signal detection and recognition. In this context, diverse behavioural features, such as ultrasound production and visual displays, have arisen in the evolutionary history of torrent-dwelling amphibians. The importance of the vocal sac in multimodal communication is being increasingly recognized, and recently a new vocal sac visual display has been discovered: unilateral inflation of paired vocal sacs. In the diurnal stream-breeding Hylodidae from the Atlantic forest, where it was first described, this behaviour is likely to be enabled by a unique anatomical configuration of the vocal sacs. To assess whether other taxa share this exceptional structure, we surveyed torrent-dwelling species with paired vocal sacs across the anuran tree of life and examined the vocal sac anatomy of exemplar species across 18 families. We found striking anatomical convergence among hylodids and species of the distantly related basal ranid genera Staurois, Huia, Meristogenys and Amolops. Ancestral character state reconstruction identified three new synapomorphies for Ranidae. Furthermore, we surveyed the vocal sac configuration of other anuran species that perform visual displays and report observations on what appears to be unilateral inflation of paired vocal sacs, in Staurois guttatus – an extremely rare behaviour in anurans.

Visual Masking of Targets Displayed against Two-And Three-Dimensional Backgrounds

1977 ◽  
Vol 45 (3_suppl) ◽  
pp. 1171-1178
Author(s):  
R. B. Lawson ◽  
Cynthia Whitmore ◽  
Dawn Lawrence
Keyword(s):  
Visual Masking ◽  
Three Dimensional ◽  
Visual Display ◽  
Two Dimensional ◽  
Backward Masking ◽  
Visual Displays ◽  
Detection Thresholds

Detection thresholds for targets displayed against two- and three-dimensional backgrounds were measured under backward masking and non-masking conditions. The results indicate that planar ring targets displayed against a two-dimensional ground are easier to mask than identical targets portrayed against a three-dimensional background. Also, the detectability of a planar ring target is enhanced when it is included within a three-dimensional rather than an identical but two-dimensional visual display. These results confirm and extend previous findings and suggest a processing asymmetry biased toward three-dimensional visual displays.

Development of A Standard Methodology for Optimizing Remote Visual Displays for Nuclear Maintenance Tasks

1981 ◽  
Vol 25 (1) ◽  
pp. 454-456
Author(s):  
Margaret M. Clarke ◽  
John Garin ◽  
Andrea Preston-Anderson
Keyword(s):  
Television Viewing ◽  
Visual Display ◽  
Learning Effects ◽  
Visual Displays ◽  
High Radiation ◽  
Work History ◽  
Future Studies ◽  
Independent Variables ◽  
Visual Motor ◽  
Motor Dexterity

Optimal closed-circuit television viewing is a critical component in the development of remote teleoperator systems for the performance of complex work in high radiation environments. This paper describes the development of a methodology whereby the visual display components of such a system can be optimized from a human factors viewpoint. The following steps were taken: (1) Identification of generic remote tasks using chronology of typical operations, equipment specifications, and projections of maintenance and repair requirements. (2) Specification of task remote visual cue requirements on which experimental remote visual displays (independent variables) were designed. (3) Measurement of subjects’ task-related characteristics: general aptitude, work history, television habits, vision, and visual motor dexterity. (4) Design and implementation of an experiment to identify optimal remote visual displays as related to remote task performance (dependent variable). (5) Treatment of learning effects. The paper concludes with a discussion of the advantages of this method, the incorporation of subjects and experimental observations into future studies, and suggestions for the applicability of this methodology to other related remote visual display areas.

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