The sudden movement of a wide-field image leads to a reflexive eye tracking response referred to as short-latency ocular following. If the image motion occurs soon after a saccade the initial speed of the ocular following is enhanced, a phenomenon known as post-saccadic enhancement. We show in macaque monkeys that repeated exposure to the same stimulus regime over a period of months leads to progressive increases in the initial speeds of ocular following. The improvement in tracking speed occurs for ocular following with and without a prior saccade. As a result of the improvement in ocular following speeds, the influence of post-saccadic enhancement wanes with increasing levels of training. The improvement in ocular following speed following repeated exposure to the same oculomotor task represents a novel form of sensori-motor learning in the context of a reflexive movement.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5714349 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0189030 | PLOS |
Publication Analysis
Top Keywords
Similar Publications
An early effect of the parafoveal preview on post-saccadic processing of English words.
Atten Percept Psychophys
July 2024
Psychology Program, Division of Science, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates.
A key aspect of efficient visual processing is to use current and previous information to make predictions about what we will see next. In natural viewing, and when looking at words, there is typically an indication of forthcoming visual information from extrafoveal areas of the visual field before we make an eye movement to an object or word of interest. This "preview effect" has been studied for many years in the word reading literature and, more recently, in object perception.
View Article and Find Full Text PDFVisual, delay, and oculomotor timing and tuning in macaque dorsal pulvinar during instructed and free choice memory saccades.
Cereb Cortex
October 2023
Decision and Awareness Group, Cognitive Neuroscience Laboratory, German Primate Center, Leibniz Institute for Primate Research, Kellnerweg 4, Goettingen 37077, Germany.
Causal perturbations suggest that primate dorsal pulvinar plays a crucial role in target selection and saccade planning, though its basic neuronal properties remain unclear. Some functional aspects of dorsal pulvinar and interconnected frontoparietal areas-e.g.
View Article and Find Full Text PDFThe pre-saccadic preview of a peripheral target enhances the efficiency of its post-saccadic processing, termed the extrafoveal preview effect. Peripheral visual performance -and thus the quality of the preview- varies around the visual field, even at iso-eccentric locations: it is better along the horizontal than vertical meridian and along the lower than upper vertical meridian. To investigate whether these polar angle asymmetries influence the preview effect, we asked human participants (to preview four tilted gratings at the cardinals, until a central cue indicated to which one to saccade.
View Article and Find Full Text PDFA sensory memory to preserve visual representations across eye movements.
Nat Commun
November 2021
Department of Ophthalmology and Visual Sciences, University of Utah, Salt Lake City, UT, USA.
Saccadic eye movements (saccades) disrupt the continuous flow of visual information, yet our perception of the visual world remains uninterrupted. Here we assess the representation of the visual scene across saccades from single-trial spike trains of extrastriate visual areas, using a combined electrophysiology and statistical modeling approach. Using a model-based decoder we generate a high temporal resolution readout of visual information, and identify the specific changes in neurons' spatiotemporal sensitivity that underly an integrated perisaccadic representation of visual space.
View Article and Find Full Text PDFThe role of action intentionality and effector in the subjective expansion of temporal duration after saccadic eye movements.
Sci Rep
October 2020
Centre of Behavioural and Cognitive Sciences, University of Allahabad, Allahabad, India.
Visual perception is based on periods of stable fixation separated by saccadic eye movements. Although naive perception seems stable (in space) and continuous (in time), laboratory studies have demonstrated that events presented around the time of saccades are misperceived spatially and temporally. Saccadic chronostasis, the "stopped clock illusion", represents one such temporal distortion in which the movement of the clock hand after the saccade is perceived as lasting longer than usual.
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!