Related Experiment Video
Updated: May 6, 2026
05:07
Using Looming Visual Stimuli to Evaluate Mouse Vision
Published on: June 13, 2019
11.1K
Integration of visual motion and locomotion in mouse visual cortex
Aman B Saleem1, Aslı Ayaz, Kathryn J Jeffery
11] UCL Institute of Ophthalmology, University College London, London, UK. [2] Department of Cognitive, Perceptual and Brain Sciences, University College London, London, UK.
Nature Neuroscience
|November 5, 2013
Summary
Mice in virtual reality integrate visual and movement speeds in their primary visual cortex (V1). This multimodal processing in V1 aids navigation by combining optic flow and self-motion cues.
Area of Science:
- Neuroscience
- Computational Neuroscience
- Sensory Processing
Background:
- Accurate self-speed estimation is crucial for navigation.
- The brain integrates visual (optic flow) and self-motion (proprioception, locomotion) cues for speed perception.
- The primary visual cortex (V1) processes visual speed information and is influenced by locomotion signals.
Purpose of the Study:
- To investigate how the primary visual cortex (V1) integrates visual speed and self-motion (run) speed during navigation.
- To determine if V1 neurons exhibit multimodal responses to combined visual and run speeds.
Main Methods:
- Recorded neural activity from V1 in mice navigating a virtual environment.
- Manipulated visual speed (optic flow) and simulated run speed.
- Analyzed neuronal responses to varying combinations of visual and run speeds.
Main Results:
- Nearly half of recorded V1 neurons responded reliably to combined visual and run speeds.
- These neurons performed a weighted sum of visual and run speed inputs.
- V1 neuronal population activity predicted combined speeds better than individual speed cues.
Conclusions:
- The mouse primary visual cortex (V1) acts as a multimodal processing hub.
- V1 integrates visual motion and locomotion signals to contribute to accurate speed estimation during navigation.
- This study reveals a role for V1 beyond purely visual processing in sensorimotor integration.
Related Concept Videos
01:14Motor and Sensory Areas of the Cortex
8.1K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
8.1K
01:24Vision
48.7K
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.
48.7K
01:26Visual System
2.3K
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
Once through the pupil, the light passes through the lens, a...
2.3K
01:23Somatosensory, Motor, and Association Cortex
5.1K
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
5.1K
01:28Major Somatic Sensory Pathways
3.2K
Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
3.2K
01:15Depth Perception and Spatial Vision
2.7K
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.
2.7K