The effect of saccadic eye movements on threshold perception is investigated theoretically. The proposed model considers eye movements by taking into account the shifting of the stimulus pattern on the retina during the occurrence of an eye movement. Saccades are characterized by high velocity and short duration. These motions cause overshoots in the response of linear filters to certain stimulus patterns. Therefore, the model predicts facilitation effects of saccades in the perception of low spatial frequency patterns and patterns flickering with high temporal frequencies. These results agree with experimentally obtained data presented in a subsequent paper. A simple approach is formulated which approximates the complex shifting function of a saccade by a switching of the pattern.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF00355541 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Rapid acclimatization to baseline stimulation with a multi-canal vestibulocochlear implant.
Eur Arch Otorhinolaryngol
January 2025
Department of Otorhinolaryngology and Head and Neck Surgery, Division of Balance Disorders, School for Mental Health and Neuroscience (MHENS), Maastricht University Medical Centre, Maastricht, The Netherlands.
Purpose: It is hypothesized that a vestibular implant should re-establish baseline activity of the ampullary nerves. Use of a constant baseline stimulation potentially allows encoding of bi-directional head movements, through the addition of signal modulations. Effective stimulation of the vestibular nerves depends on the ability to acclimate to this baseline signal.
View Article and Find Full Text PDFFor a linking hypothesis in the visual world paradigm to clearly accommodate existing findings and make unambiguous predictions, it needs to be computationally implemented in a fashion that transparently draws the causal connection between the activations of internal representations and the measured output of saccades and reaching movements. Quantitatively implemented linking hypotheses provide an opportunity to not only demonstrate an existence proof of that causal connection but also to test the fidelity of the measuring methods themselves. When a system of interest is measured one way (e.
View Article and Find Full Text PDFEvaluation of Eye Alignment Before and After Refractive Surgery Using an Implantable Collamer Lens in Phakic Patients with Myopia.
J Binocul Vis Ocul Motil
January 2025
Eye Center, Sanno Hospital, Tokyo, Japan.
Purpose: To investigate changes in eye alignment before and after ICL implantation in patients with myopia having corrected distance visual acuity (CDVA) of ≥0.0 logMAR.
Subjects And Methods: The medical records of 1012 patients without eye movement limitation who underwent bilateral ICL implantation were retrospectively reviewed a at the Eye Center of Sanno Hospital in Japan.
Effect of inferior oblique anterior transposition on vertical deviation.
Int Ophthalmol
January 2025
Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin, China.
Purpose: To evaluate the efficacy and complications of simplified graded inferior oblique anterior transposition (IOAT) in treating at least 10 PD vertical deviation in the primary position and inferior oblique muscle overaction (IOOA).
Methods: This retrospective study reviewed the medical records of 65 patients treated with simplified graded IOAT procedures for both vertical deviation and IOOA. Patients were grouped according to vertical deviation in the primary position.
Age-related differences in eye movements and the association with Archimedes spiral tracing performance in young and older adults.
Exp Brain Res
January 2025
Joseph J. Zilber College of Public Health, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
Age-related hand motor impairments may critically depend on visual information though few studies have examined eye movements during tasks of hand function in older adults. The purpose of this study was to assess eye movements and their association with performance while tracing on a touchscreen in young and older adults. Eye movements of 21 young (age 20-38 years; 12 females, 9 males) and 20 older (65-85 years; 10 females, 10 males) adults were recorded while performing an Archimedes spiral tracing task, a common clinical assessment sensitive to age-associated impairments in hand function.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!