scholarly journals The Thresholds of Greening Unit Serving Set as an Arousal Task Based on EEG and Eye Movement

2021 ◽  
Author(s):  
Yu-Le ZHANG ◽  
Shoulin Zhu
Keyword(s):  
Characteristic Feature ◽  
Eye Movement ◽  
Spatial Patterns ◽  
Unit Length ◽  
Movement Control ◽  
Sample Entropy ◽  
Control Group ◽  
Eye Movement Control ◽  
Triangular Shape ◽  
Arousal Effect

Abstract Monotony is the most prominent characteristic feature of the prairie highway. Monotony can cause a decrease in the level of arousal, leading to lower vigilant. This study sets the greening unit as an arousal task to withstand the monotony and examines the different landscapes’ effects on EEG(electroencephalo-graph) and eye movement for drivers. 26 participants took part in a simulated driving experiment. Three scenes correspond to other greening units, respectively, one set as the control group without greening. The results show that the greening unit will improve driver vigilance and external eye movement control preponderance. The type of eye movement and [(alpha + theta) / beta] performance optimal arousal is immediate but discontinuous; The type of eye movement and alpha sample entropy show different spatial patterns of landscapes have different effective lengths. In conclusion,(1) Landscape（Fully open with triangular shape） provides superior arousal effect；(2)The greening unit length threshold corresponding to the optimal arousal level of drivers is 666 m; (3)The alpha sample entropy of less than 0.234 can be identified as the threshold of effect greening length

scholarly journals Normal saccades but decreased fixation stability in a population of children with dyslexia

2021 ◽  
Vol 14 (2) ◽  
pp. 1-7
Author(s):  
Gro Horgen Vikesdal ◽  
Helle Kristine Falkenberg ◽  
Mark Mon-Williams ◽  
Patricia Riddell ◽  
Trine Langaas
Keyword(s):  
Visual Acuity ◽  
Eye Movement ◽  
Developmental Disorders ◽  
Movement Control ◽  
Control Group ◽  
Typically Developing ◽  
Eye Tracker ◽  
Eye Movement Control ◽  
Dyslexic Group ◽  
Fixation Stability

Developmental dyslexia affects around 5-15% of the population and has a heterogeneous aetiology. Optometric disorders are more prevalent in dyslexic populations but the relationship be- tween eye movement control and dyslexia is not well established. In this study, we investigated whether children with dyslexia show saccadic or fixation deficits and whether these deficits are related to deficits in visual acuity and/or accommodation. Thirty-four children with and without dyslexia were recruited for the project. All participants had an optometric examination and performed a saccade and fixation experiment. We used two eye movement paradigms: the step and the gap task. Eye movements were recorded by an infrared eye-tracker and saccade and fixation parameters were analysed separately. Saccadic latencies, premature saccades, and directional errors were similar between children with dyslexia and typically developing children. In contrast, fixations were significantly less stable in the dyslexic group. Neither saccades nor fixations were associated with deficits in accommodation or visual acuity. Children with dyslexia showed no difficulties in saccadic performance, but their fixation stability was reduced compared to the control group. The reduced fixation stability can be explained by general deficits in the cognitive processes that underpin eye movement control, that have also been found in other neuro-developmental disorders.

Using ERP to examine eye movement control in reading

2001 ◽  
Author(s):  
Erik D. Reichle ◽  
Lesley A. Hart ◽  
Charles A. Perfetti
Keyword(s):  
Eye Movement ◽  
Movement Control ◽  
Eye Movement Control

scholarly journals Role of Primate Cerebellar Hemisphere in Voluntary Eye Movement Control Revealed by Lesion Effects

2009 ◽  
Vol 101 (2) ◽  
pp. 934-947 ◽  
Author(s):  
Masafumi Ohki ◽  
Hiromasa Kitazawa ◽  
Takahito Hiramatsu ◽  
Kimitake Kaga ◽  
Taiko Kitamura ◽  
...  
Keyword(s):  
Eye Movements ◽  
Eye Movement ◽  
Smooth Pursuit ◽  
Movement Control ◽  
Cerebellar Hemisphere ◽  
Target Velocity ◽  
Eye Movement Control ◽  
Pursuit Eye Movements ◽  
Catch Up

The anatomical connection between the frontal eye field and the cerebellar hemispheric lobule VII (H-VII) suggests a potential role of the hemisphere in voluntary eye movement control. To reveal the involvement of the hemisphere in smooth pursuit and saccade control, we made a unilateral lesion around H-VII and examined its effects in three Macaca fuscata that were trained to pursue visually a small target. To the step (3°)-ramp (5–20°/s) target motion, the monkeys usually showed an initial pursuit eye movement at a latency of 80–140 ms and a small catch-up saccade at 140–220 ms that was followed by a postsaccadic pursuit eye movement that roughly matched the ramp target velocity. After unilateral cerebellar hemispheric lesioning, the initial pursuit eye movements were impaired, and the velocities of the postsaccadic pursuit eye movements decreased. The onsets of 5° visually guided saccades to the stationary target were delayed, and their amplitudes showed a tendency of increased trial-to-trial variability but never became hypo- or hypermetric. Similar tendencies were observed in the onsets and amplitudes of catch-up saccades. The adaptation of open-loop smooth pursuit velocity, tested by a step increase in target velocity for a brief period, was impaired. These lesion effects were recognized in all directions, particularly in the ipsiversive direction. A recovery was observed at 4 wk postlesion for some of these lesion effects. These results suggest that the cerebellar hemispheric region around lobule VII is involved in the control of smooth pursuit and saccadic eye movements.

scholarly journals Effects of word length on eye movement control: The evidence from Arabic

2015 ◽  
Vol 22 (5) ◽  
pp. 1443-1450 ◽  
Author(s):  
Kevin B. Paterson ◽  
Abubaker A. A. Almabruk ◽  
Victoria A. McGowan ◽  
Sarah J. White ◽  
Timothy R. Jordan
Keyword(s):  
Eye Movement ◽  
Word Length ◽  
Movement Control ◽  
Eye Movement Control

scholarly journals Eye Movement Control

2014 ◽  
Vol 2014 ◽  
pp. 1-2
Author(s):  
Stefanie I. Becker ◽  
Gernot Horstmann ◽  
Arvid Herwig
Keyword(s):  
Eye Movement ◽  
Movement Control ◽  
Eye Movement Control
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