scholarly journals Experimental Study on Subjective Evaluation for Visual Information by Event-Related Potential: Evaluation of Food and its Appearance

i-Perception ◽  
10.1068/ic946 ◽  
2011 ◽  
Vol 2 (8) ◽  
pp. 946-946
Author(s):  
Motoshi Tanaka ◽  
Hiroshi Inoue ◽  
Yoshitsugu Niiyama
Keyword(s):  
Experimental Study ◽  
Visual Information ◽  
Subjective Evaluation ◽  
Event Related Potential ◽  
Potential Evaluation

Experimental Study on Event-Related Potential for Objective Evaluation of Food

2011 ◽  
Vol 131 (1) ◽  
pp. 96-101 ◽  
Author(s):  
Motoshi Tanaka ◽  
Tomohiro Honma ◽  
Hiroshi Inoue ◽  
Yoshitsugu Niiyama ◽  
Toru Takahashi ◽  
...  
Keyword(s):  
Experimental Study ◽  
Objective Evaluation ◽  
Event Related Potential

Tuning Perceptual Competition

2010 ◽  
Vol 103 (2) ◽  
pp. 1057-1065 ◽  
Author(s):  
Edmund Wascher ◽  
Christian Beste
Keyword(s):  
Visual Information ◽  
Relevant Information ◽  
Event Related Potential ◽  
Luminance Change ◽  
Orientation Change ◽  
Conflicting Information ◽  
Task Irrelevant ◽  
Study Participants ◽  
Dynamic Interplay ◽  
Relative Salience

The ability to notice relevant visual information has been assumed to be determined both by the relative salience of relevant information compared with distracters within a given display and by voluntary allocation of attention toward intended goals. A dominance of either of these two mechanisms in stimulus processing has been claimed by different theories. A central question in this context is to what degree and how task irrelevant signals can influence processing of target information. In the present study, participants had to detect a luminance change in various conditions among others against an irrelevant orientation change. The saliency of the latter was systematically varied and was found to be predictive for the proportion of detected information when relevant and irrelevant information were spatially separated but not when they overlapped. Weighting and competition of incoming signals was reflected in the amplitude of the N1pc component of the event-related potential. Initial orientation of attention toward the irrelevant element had to be followed by a reallocation process, reflected in an N2pc. The control of conflicting information additionally evoked a fronto-central N2 that varied with the amount of competition induced. Thus the data support models that assume that attention is a dynamic interplay of bottom-up and top-down processes that may be mediated via a common dynamic neural network.

scholarly journals Long-Latency ERPs and Recognition of Facial Identity

2003 ◽  
Vol 15 (1) ◽  
pp. 136-151 ◽  
Author(s):  
Ela I. Olivares ◽  
Jaime Iglesias ◽  
Socorro Rodríguez-Holguín
Keyword(s):  
Mismatch Negativity ◽  
Visual Information ◽  
Semantic Information ◽  
Event Related Potential ◽  
Verbal Information ◽  
Facial Identity ◽  
Cross Domain ◽  
Facial Processing ◽  
Long Latency ◽  
Temporal Localization

N400 brain event-related potential (ERP) is a mismatch negativity originally found in response to semantic incongruences of a linguistic nature and is used paradigmatically to investigate memory organization in various domains of information, including that of faces. In the present study, we analyzed different mismatch negativities evoked in N400-like paradigms related to recognition of newly learned faces with or without associated verbal information. ERPs were compared in the following conditions: (1) mismatching features (eyes-eyebrows) using a facial context corresponding to the faces learned without associated verbal information (“pure” intradomain facial processing); (2) mismatching features using a facial context corresponding to the faces learned with associated occupations and proper names (“nonpure” intradomain facial processing); (3) mismatching occupations using a facial context (cross-domain processing); and (4) mismatching names using an occupation context (intra-domain verbal processing). Results revealed that mismatching stimuli in the four conditions elicited a mismatch negativity analogous to N400 but with different timing and topo-graphical patterns. The onset of the mismatch negativity occurred earliest in Conditions 1 and 2, followed by Condition 4, and latest in Condition 3. The negativity had the shortest duration in Task 1 and the longest duration in Task 3. Bilateral parietal activity was confirmed in all conditions, in addition to a predominant right posterior temporal localization in Condition 1, a predominant right frontal localization in Condition 2, an occipital localization in Condition 3, and a more widely distributed (although with posterior predominance) localization in Condition 4. These results support the existence of multiple N400, and particularly of a nonlinguistic N400 related to purely visual information, which can be evoked by facial structure processing in the absence of verbal-semantic information.

An Auditory Event Related Potential Evaluation of Sonar Task Experience and Age

1995 ◽  
Vol 80 (3_suppl) ◽  
pp. 1363-1376 ◽  
Author(s):  
Lex L. Merrill ◽  
David A. Kobus ◽  
F. J. McGuigan
Keyword(s):  
Real World ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Auditory Task ◽  
Auditory Event ◽  
Age Related ◽  
Younger Age ◽  
Related Potentials ◽  
Potential Evaluation ◽  
Task Experience

To gauge the interaction of real-world sonar-task experience and age on brain electrical activity, the effect of sonar experience and age on event related potentials (ERP) was examined. A three-group design was used and the results suggest that sonar experience and age affect the amplitude and distribution of the ERP component. The results concerning age and ERPs support and extend the results of previous studies and suggest that age-related differences occur at a much younger age than is reported elsewhere. Attentional and stimulus evaluation processes which have been linked to parameters of the ERP component may be enhanced with real-world auditory task experience. Research on ERP should control for the possible confounds of auditory-task experience and age.

An Ergonomic Evaluation of the Effects of Veiling Reflection on the Human Visibility

2000 ◽  
Vol 44 (21) ◽  
pp. 3-501-3-501
Author(s):  
Jae-Min Park ◽  
Sang-Do Lee ◽  
Young-Sook Kim
Keyword(s):  
Information Search ◽  
Visual Information ◽  
Visual Target ◽  
Subjective Evaluation ◽  
Objective Evaluation ◽  
Luminance Contrast ◽  
Visual Sensitivity ◽  
Working Environment ◽  
Daily Newspapers ◽  
Human Sensibility

Man perceive and react around him through the five senses. Also man give rise to the human sensibility and maintain his emotion. This study doesn't limit working environment to VDT environment, but considers the universal working environment acquiring information by eyesight stimulation. In this respect, designed and made is experimental equipment such as an external light for veiling reflection, visual target suggesting system, and visual target considered luminance contrast level. And reading the visual target is selected as work after excerpting the editorials from daily newspapers in Korean and Chinese letter and making target for experimental condition. In case of forming an abnormal veiling reflection we consider the form; a vertical (25%, 50%, 75%)and a horizontal (25%, 50%, 75%). The results from the subjective evaluation are analyzed by SD (Semantic Differential) methodology of 5 point scale for visibility and nuisance when an abnormal veiling reflection forms on target. In addition, the results of the objective evaluation are suggested by measuring and analyzing EEG (Electroencephalogram) of bio-signal for visual sensitivity. The results of this study can apply to basic data which create a guideline of a visual operation. In particular, it can be designed as an illumination environment concerning an ergonomic factor on visual operations, mental stress such as a visual inspection operation, visual information search operation, etc. As a result, we can expect to reduce the visual nuisance and contribute to the improvement of the performance and the uplift of the competitive power.

scholarly journals Delayed visual feedback of an agent keystroke causes illusory heaviness and stiffness

2021 ◽  
Author(s):  
Takumi Yokosaka ◽  
Takahiro Kawabe
Keyword(s):  
Causal Relationship ◽  
Visual Feedback ◽  
User Interfaces ◽  
Visual Information ◽  
Visual Motion ◽  
Subjective Evaluation ◽  
Limb Movement ◽  
Sense Of Agency ◽  
Luminance Change ◽  
The Relationship

Imposing a delay between an action (e.g., a limb movement) and its related visual feedback (e.g., a cursor movement on the display) induces a peculiar sensation of heaviness or stiffness. Earlier studies have examined this delay-induced heaviness or stiffness sensation in relation to the non-arbitrary causal relationship between an action and its effect. Here, "non-arbitrary causal relationship" means that an agent's action produces a specific and deterministic pattern of visual feedback; for example, a leftward limb movement consistently and deterministically causes a leftward visual motion. In modern graphical user interfaces, on the other hand, users often control visual information by pressing keys, wherein the relationship between the keystroke and the change in visual information is arbitrary. The present study examined whether the sensation of heaviness/stiffness could be caused when an agent's keystroke produced a delayed arbitrary visual feedback. Participants were asked to press and hold down an assigned key to cause temporal luminance changes in a square centered on the display, which were arbitrary visual feedback of their keystroke. Not only the onset delay of the temporal luminance change from the participant's keystroke but also the speed of the temporal luminance change were examined as a visual cue to heaviness/stiffness. In Experiment 1, the participants' task was to give a rating for the strength of the heaviness and stiffness perceived when they pressed the key. Our results showed that the heaviness and stiffness ratings increased as the delay increased and decreased as the speed increased. To check whether the manipulation of the delay and speed of the visual feedback caused changes in the subjective evaluation of sensorimotor incongruence, in Experiment 2, we asked the participants to give a rating for the sense of agency. The rating scores decreased as the delay increased and increased as the speed increased. The rating scores for the illusory heaviness/stiffness were negatively correlated with the rating scores for the sense of agency. We discuss that the brain determines the heaviness and stiffness during an agent's keystroke based on internalized statistics relating to the delay and speed of the action feedback.

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