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Related Concept Videos

Vision

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.

Depth Perception and Spatial Vision

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.

Parallel Processing

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...

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Related Experiment Video

Updated: Jun 24, 2025

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain

Published on: May 10, 2012

Decoding Remapped Spatial Information in the Peri-Saccadic Period.

Caoimhe Moran^1,2, Philippa A Johnson^3,4, Ayelet N Landau^2,5

¹Melbourne School of Psychological Sciences, The University of Melbourne, Parkville, Melbourne, Victoria 3052, Australia caoimhe@student.unimelb.edu.au.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience

|June 13, 2024

Summary

This summary is machine-generated.

Visual neurons predictively remap stimuli before eye movements (saccades) to maintain visual stability. This study reveals that this predictive remapping occurs approximately 180ms after stimulus onset, integrating visual input with eye movement signals.

Keywords:

EEG eye movements multivariate pattern analysis saccadic remapping

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Area of Science:

Neuroscience
Visual Perception
Cognitive Science

Background:

Saccadic remapping is a predictive neural process compensating for visual field shifts during eye movements.
Understanding the precise timing of saccadic remapping is crucial for explaining visual stability.

Purpose of the Study:

To map the temporal dynamics of predictive saccadic remapping in the human brain.
To determine when remapped visual stimulus information becomes available during the peri-saccadic period.

Main Methods:

Electroencephalography (EEG) recorded neural activity during a saccade task with covert attention to visual stimuli.
Classifiers trained on fixation trials to decode stimulus location.
Tested for stimulus information at the remapped retinotopic location during saccade trials.

Main Results:

Stimulus information was decoded at the remapped location ~180ms post-stimulus onset.
Remapping occurred specifically when stimuli were presented 100-200ms before saccade onset.
The timing of remapping was primarily determined by stimulus onset, not saccade onset.

Conclusions:

Predictive saccadic remapping integrates corollary discharge with peripheral visual input.
Optimal remapping occurs when stimuli precede saccades by 100-200ms.
This process ensures accurate activation of post-saccadic retinotopic neurons.