scholarly journals To look or not to look: Subliminal abrupt-onset cues influence constrained free-choice saccades

2020 ◽  
Vol 13 (4) ◽  
Author(s):  
Seema Gorur Prasad ◽  
Ramesh Kumar Mishra
Keyword(s):  
Visual Field ◽  
Eye Movement ◽  
Free Choice ◽  
Abrupt Onset ◽  
Saccade Latency ◽  
Attention Capture ◽  
Movement Behaviour ◽  
Manual Response ◽  
Attentional Control Settings ◽  
Task Relevancy

Subliminal cues have been shown to capture attention and modulate manual response behaviour but their impact on eye movement behaviour is not well-studied. In two experiments, we examined if subliminal cues influence constrained free-choice saccades and if this influence is under strategic control as a function of task-relevancy of the cues. On each trial, a display containing four filled circles at the centre of each quadrant was shown. A central coloured circle indicated the relevant visual field on each trial (Up or Down in Experiment 1; Left or Right in Experiment 2). Next, abrupt-onset cues were presented for 16 ms at one of the four locations. Participants were then asked to freely choose and make a saccade to one of the two target circles in the relevant visual field. The analysis of the frequency of saccades, saccade endpoint deviation and saccade latency revealed a significant influence of the relevant subliminal cues on saccadic decisions. Latency data showed reduced capture by spatially-irrelevant cues under some conditions. These results indicate that spatial attentional control settings as defined in our study could modulate the influence of subliminal abrupt-onset cues on eye movement behaviour. We situate the findings of this study in the attention-capture debate and discuss the implications for the subliminal cueing literature.   

scholarly journals Granulomatosis with Polyangiitis Presenting with Bilateral Orbital Apex Syndrome

2021 ◽  
pp. 32-40
Author(s):  
Yusuke Murai ◽  
Takuji Kurimoto ◽  
Sotaro Mori ◽  
Kaori Ueda ◽  
Mari Sakamoto ◽  
...  
Keyword(s):  
Visual Field ◽  
Eye Movement ◽  
Endoscopic Sinus Surgery ◽  
Granulomatosis With Polyangiitis ◽  
Field Tests ◽  
Sinus Surgery ◽  
Orbital Apex ◽  
Orbital Apex Syndrome ◽  
Initial Examination ◽  
Steroid Pulse

We report a rare case of granulomatosis with polyangiitis (GPA) presenting with bilateral orbital apex syndrome (OAS). A 73-year-old woman with a history of endoscopic sinus surgery for ethmoidal sinusitis experienced a sudden decrease in visual acuity (VA) of both eyes. At the initial examination, her VA had decreased to 0.01 in the right eye and 0.03 in the left eye, and eye movement in both eyes was mildly limited in all directions. Visual field tests of both eyes showed a large central scotoma. Laboratory tests revealed an elevation of myeloperoxidase-anti-neutrophil cytoplasmic antibody. Facial computed tomography demonstrated a thickened mucosal membrane in the entire ethmoidal sinus, and the posterosuperior walls of Onodi cells filled with infiltrative lesions had thinned. Orbital magnetic resonance imaging showed severe inflammation in the orbital apex. From these clinical findings, the patient was diagnosed with GPA presenting with OAS associated with ethmoid sinusitis. Emergent endoscopic sinus surgery was performed for biopsy and debridement of the ethmoidal and sphenoid sinusitis to decompress the optic nerve. One day after endoscopic sinus surgery, the patient’s VA and visual field were improved, and steroid pulse therapy was commenced postoperatively. Four days later, VA had recovered to 1.0 in both eyes, and eye movement and visual field had were improved. Although OAS is a rare manifestation, early surgical treatment should be considered when the orbital lesion presents as risk of rapid deterioration of visual function in patients with GPA.

Visual Field Accuracy and Eye Movement Direction: A Child's Eye View

1980 ◽  
Vol 50 (2) ◽  
pp. 631-636
Author(s):  
Evans Mandes
Keyword(s):  
Eye Movements ◽  
Visual Field ◽  
Eye Movement ◽  
Visual Fields ◽  
Movement Direction

Post-exposural eye movements were studied in 32 adults and 24 7-yr.-old children. Stimuli were binary figures exposed tachistoscopically in both visual fields simultaneously. The data showed significant correlations between direction of eye movement and locus of recognition for both children and adults. No significant differences were found in frequencies of eye movements of children and adults. The data are interpreted in terms of the facilitative effects of post-exposural eye movements upon perception for both groups.

Probability cueing induced bias does not modulate attention-capture by brief abrupt-onset cues

2021 ◽  
pp. 1-23
Author(s):  
Aniruddha Ramgir ◽  
Seema Prasad ◽  
Ramesh Kumar Mishra
Keyword(s):  
Abrupt Onset ◽  
Attention Capture

scholarly journals Temporal Interactions of Air-Puff–Evoked Blinks and Saccadic Eye Movements: Insights Into Motor Preparation

2005 ◽  
Vol 93 (3) ◽  
pp. 1718-1729 ◽  
Author(s):  
Neeraj J. Gandhi ◽  
Desiree K. Bonadonna
Keyword(s):  
Eye Movement ◽  
Target Location ◽  
Low Frequency ◽  
Saccadic Eye Movements ◽  
Stimulus Presentation ◽  
Motor Preparation ◽  
Threshold Level ◽  
Saccade Latency ◽  
Sensory Response ◽  
Temporal Interactions

Following the initial, sensory response to stimulus presentation, activity in many saccade-related burst neurons along the oculomotor neuraxis is observed as a gradually increasing low-frequency discharge hypothesized to encode both timing and metrics of the impending eye movement. When the activity reaches an activation threshold level, these cells discharge a high-frequency burst, inhibit the pontine omnipause neurons (OPNs) and trigger a high-velocity eye movement known as saccade. We tested whether early cessation of OPN activity, prior to when it ordinarily pauses, acts to effectively lower the threshold and prematurely trigger a movement of modified metrics and/or dynamics. Relying on the observation that OPN discharge ceases during not only saccades but also blinks, air-puffs were delivered to one eye to evoke blinks as monkeys performed standard oculomotor tasks. We observed a linear relationship between blink and saccade onsets when the blink occurred shortly after the cue to initiate the movement but before the average reaction time. Blinks that preceded and overlapped with the cue increased saccade latency. Blinks evoked during the overlap period of the delayed saccade task, when target location is known but a saccade cannot be initiated for correct performance, failed to trigger saccades prematurely. Furthermore, when saccade and blink execution coincided temporally, the peak velocity of the eye movement was attenuated, and its initial velocity was correlated with its latency. Despite the perturbations, saccade accuracy was maintained across all blink times and task types. Collectively, these results support the notion that temporal features of the low-frequency activity encode aspects of a premotor command and imply that inhibition of OPNs alone is not sufficient to trigger saccades.

scholarly journals Eye-Movement–Based Assessment of the Perceptual Consequences of Glaucomatous and Neuro-Ophthalmological Visual Field Defects

2021 ◽  
Vol 10 (2) ◽  
pp. 1
Author(s):  
Rijul Saurabh Soans ◽  
Alessandro Grillini ◽  
Rohit Saxena ◽  
Remco J. Renken ◽  
Tapan Kumar Gandhi ◽  
...  
Keyword(s):  
Visual Field ◽  
Eye Movement ◽  
Visual Field Defects ◽  
Field Defects

scholarly journals Incremental comprehension of pitch relationships in written music: Evidence from eye movements

2018 ◽  
Vol 71 (1) ◽  
pp. 211-219 ◽  
Author(s):  
Lauren V Hadley ◽  
Patrick Sturt ◽  
Tuomas Eerola ◽  
Martin J Pickering
Keyword(s):  
Eye Movements ◽  
Eye Movement ◽  
Sight Reading ◽  
Harmonic Structure ◽  
Movement Behaviour ◽  
Prior Context ◽  
Concurrent Performance ◽  
Text Reading ◽  
Processing Difficulty ◽  
Structural Processing

To investigate how proficient pianists comprehend pitch relationships in written music when they first encounter it, we conducted two experiments in which proficient pianists’ eyes were tracked while they read and played single-line melodies. In Experiment 1, participants played at their own speed; in Experiment 2, they played with an external metronome. The melodies were either congruent or anomalous, with the anomaly involving one bar being shifted in pitch to alter the implied harmonic structure (e.g. non-resolution of a dominant). In both experiments, anomaly led to rapid disruption in participants’ eye movements in terms of regressions from the target bar, indicating that pianists process written pitch relationships online. This is particularly striking because in musical sight-reading, eye movement behaviour is constrained by the concurrent performance. Both experiments also showed that anomaly induced pupil dilation. Together, these results indicate that proficient pianists rapidly integrate the music that they read into the prior context and that anomalies in terms of pitch relationships lead to processing difficulty. These findings parallel those of text reading, suggesting that structural processing involves similar constraints across domains.

scholarly journals An Eye Movement Study on the Role of the Visual Field Defect in Pure Alexia

PLoS ONE ◽  
2014 ◽  
Vol 9 (7) ◽  
pp. e100898 ◽  
Author(s):  
Tobias Bormann ◽  
Sascha A. Wolfer ◽  
Wibke Hachmann ◽  
Wolf A. Lagrèze ◽  
Lars Konieczny
Keyword(s):  
Visual Field ◽  
Eye Movement ◽  
Visual Field Defect ◽  
Pure Alexia ◽  
Movement Study ◽  
Field Defect
Sign in / Sign up

Export Citation Format

Share Document