scholarly journals Visual perception during eye movement.

1900 ◽  
Vol 7 (5) ◽  
pp. 454-465 ◽  
Author(s):  
Raymond Dodge
Keyword(s):  
Visual Perception ◽  
Eye Movement

Providing a human user artificial ability to control their eyes independently with various eye movement patterns

2012 ◽  
Vol 25 (0) ◽  
pp. 171-172
Author(s):  
Fumio Mizuno ◽  
Tomoaki Hayasaka ◽  
Takami Yamaguchi
Keyword(s):  
Eye Movements ◽  
Visual Perception ◽  
Control Systems ◽  
Eye Movement ◽  
Binocular Rivalry ◽  
Human Visual System ◽  
Visual Stimulation ◽  
The Other ◽  
Flexible Adaptation ◽  
Left And Right

Humans have the capability to flexibly adapt to visual stimulation, such as spatial inversion in which a person wears glasses that display images upside down for long periods of time (Ewert, 1930; Snyder and Pronko, 1952; Stratton, 1887). To investigate feasibility of extension of vision and the flexible adaptation of the human visual system with binocular rivalry, we developed a system that provides a human user with the artificial oculomotor ability to control their eyes independently for arbitrary directions, and we named the system Virtual Chameleon having to do with Chameleons (Mizuno et al., 2010, 2011). The successful users of the system were able to actively control visual axes by manipulating 3D sensors held by their both hands, to watch independent fields of view presented to the left and right eyes, and to look around as chameleons do. Although it was thought that those independent fields of view provided to the user were formed by eye movements control corresponding to pursuit movements on human, the system did not have control systems to perform saccadic movements and compensatory movements as numerous animals including human do. Fluctuations in dominance and suppression with binocular rivalry are irregular, but it is possible to bias these fluctuations by boosting the strength of one rival image over the other (Blake and Logothetis, 2002). It was assumed that visual stimuli induced by various eye movements affect predominance. Therefore, in this research, we focused on influenced of patterns of eye movements on visual perception with binocular rivalry, and implemented functions to produce saccadic movements in Virtual Chameleon.

Impaired visual perception in rapid eye movement sleep behavior disorder.

2014 ◽  
Vol 28 (3) ◽  
pp. 388-393 ◽  
Author(s):  
Lucie Plomhause ◽  
Kathy Dujardin ◽  
Muriel Boucart ◽  
Virginie Herlin ◽  
Luc Defebvre ◽  
...  
Keyword(s):  
Visual Perception ◽  
Eye Movement ◽  
Behavior Disorder ◽  
Rapid Eye Movement ◽  
Rapid Eye Movement Sleep ◽  
Sleep Behavior

scholarly journals Visual imagery and visual perception induce similar changes in occipital slow waves of sleep

2019 ◽  
Vol 121 (6) ◽  
pp. 2140-2152 ◽  
Author(s):  
Giulio Bernardi ◽  
Monica Betta ◽  
Jacinthe Cataldi ◽  
Andrea Leo ◽  
José Haba-Rubio ◽  
...  
Keyword(s):  
Visual Perception ◽  
Eye Movement ◽  
Slow Wave ◽  
Visual Imagery ◽  
Nrem Sleep ◽  
Wave Activity ◽  
Slow Waves ◽  
Slow Wave Activity ◽  
Short Term ◽  
Visual Areas

Previous studies have shown that regional slow-wave activity (SWA) during non-rapid eye movement (NREM) sleep is modulated by prior experience and learning. Although this effect has been convincingly demonstrated for the sensorimotor domain, attempts to extend these findings to the visual system have provided mixed results. In this study we asked whether depriving subjects of external visual stimuli during daytime would lead to regional changes in slow waves during sleep and whether the degree of “internal visual stimulation” (spontaneous imagery) would influence such changes. In two 8-h sessions spaced 1 wk apart, 12 healthy volunteers either were blindfolded while listening to audiobooks or watched movies (control condition), after which their sleep was recorded with high-density EEG. We found that during NREM sleep, the number of small, local slow waves in the occipital cortex decreased after listening with blindfolding relative to movie watching in a way that depended on the degree of visual imagery subjects reported during blindfolding: subjects with low visual imagery showed a significant reduction of occipital sleep slow waves, whereas those who reported a high degree of visual imagery did not. We also found a positive relationship between the reliance on visual imagery during blindfolding and audiobook listening and the degree of correlation in sleep SWA between visual areas and language-related areas. These preliminary results demonstrate that short-term alterations in visual experience may trigger slow-wave changes in cortical visual areas. Furthermore, they suggest that plasticity-related EEG changes during sleep may reflect externally induced (“bottom up”) visual experiences, as well as internally generated (“top down”) processes.NEW & NOTEWORTHY Previous work has shown that slow-wave activity, a marker of sleep depth, is linked to neural plasticity in the sensorimotor cortex. We show that after short-term visual deprivation, subjects who reported little visual imagery had a reduced incidence of occipital slow waves. This effect was absent in subjects who reported strong spontaneous visual imagery. These findings suggest that visual imagery may “substitute” for visual perception and induce similar changes in non-rapid eye movement slow waves.

Interpretive Study of Evoked Responses Elicted by Gross Saccadic Eye Movements

1968 ◽  
Vol 27 (3) ◽  
pp. 683-703 ◽  
Author(s):  
Kenneth Gaarder
Keyword(s):  
Eye Movements ◽  
Visual Perception ◽  
Eye Movement ◽  
Saccadic Eye Movements ◽  
Evoked Responses ◽  
Interpretive Study

A model of visual perception is outlined in which the sudden shifts of the retina caused by saccadic (jumping) eye movements generate discrete, discontinuous packages or units of information which are transmitted to the cortex as evoked responses. An experiment is described where gross saccadic eye movements across a particular stimulus generate saccade-linked evoked responses whose amplitudes reflect the on vs off, left vs right, and size-of-eye-movement qualities of their particular eye movements. The results are consistent with the idea that evoked responses carry information. Some further implications of the model are discussed.

scholarly journals Age Factor and its Role in the Readers’ Comprehension of Stylistic Heterogeneity: Evidence from Eye Movements and Default Responses

2020 ◽  
pp. 394-406
Author(s):  
Maria I. Kiose
Keyword(s):  
Eye Movements ◽  
Visual Perception ◽  
Secondary School ◽  
Eye Movement ◽  
Mixed Effects ◽  
Cognitive Effort ◽  
Adult Participants ◽  
Age Factor ◽  
Show Evidence

The article discusses the role of the age factor in the readers’ comprehension of stylistically heterogeneous texts, here the text fragments containing figurative noun groups of salient and non-salient character. The salience effects on eye movement and default responses are studied in the oculographic experiment where the secondary school children had to read the sentences displaying figurativeness. The earlier detected statistically significant corpus salience indices of referential, linguistic and discourse parameters in figurativeness construal get verified experimentally. In accordance with the Graded Salience and Defaultness hypotheses I assumed that the interpretation of figurative noun groups of varied referential, linguistic and discourse salience will require different cognitive effort in terms of both eye movement reactions and default inferences. Several eye-tracking experiments with adult participants sufficed to prove the dependency, however, the results obtained with children did not support the Salience hypothesis in the part of visual perception. The eye movements of children facing figurative noun groups did not show steady correlation patterns with the salience effects of these groups, whereas the default interpretations correlated strongly with referential, linguistic, and discourse salience. The results show evidence in favor of Mixed-Effects Model of interpretation

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