Related Experiment Video
Updated: Jul 8, 2026
10:19
Studying the Neural Basis of Adaptive Locomotor Behavior in Insects
Published on: April 13, 2011
How visual context influences lateral stepping regulation while walking on winding paths
Anna C Render1, Tarkeshwar Singh1, Joseph P Cusumano2
1Department of Kinesiology, The Pennsylvania State University, University Park, Pennsylvania, United States.
Journal of Neurophysiology
|July 7, 2026
Summary
Walking control uses both task context and visual cues. Environmental richness and path contrast influence foot placement, showing how visual salience and context interact for navigation.
Area of Science:
- Neuroscience
- Biomechanics
- Human Movement Science
Background:
- Goal-directed walking necessitates precise foot placement, relying on visuomotor integration.
- Navigation is guided by perceptual, cognitive, and contextual salience, influencing attention and motor planning.
Purpose of the Study:
- To quantify how perceptual salience influences lateral foot placement during walking.
- To investigate the interplay between contextual and perceptual salience in guiding step-to-step control.
Main Methods:
- Participants walked virtual paths (straight/winding) with manipulated environmental richness (rich/sparse) and path contrast (high/low).
- Head pitch angle approximated gaze direction; lateral stepping was analyzed using the Goal Equivalent Manifold framework.
Main Results:
- Contextual salience (path type) significantly influenced stepping, but visual information (perceptual salience) also modulated foot placement within paths.
- Path color contrast had a greater effect on stepping than environmental richness, indicating its importance.
- Peripheral vision contributed to stepping, though less than path saliency or contextual salience.
Conclusions:
- Both contextual and perceptual salience are crucial for controlling foot placement during walking.
- Visual information, including peripheral cues and path characteristics, interacts with task context to guide navigation.
Related Concept Videos
01:11Direct Motor Pathways
The direct motor pathways, also known as the pyramidal tracts, are a group of neural pathways that originate in the brain and descend through the spinal cord. They control the voluntary movement of the body. There are two major direct motor pathways: the corticospinal and the corticobulbar tracts.
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and the...
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and the...
01:28Major Somatic Sensory Pathways
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 posterior columns...
01:22Indirect Motor Pathways
The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
01:15Depth 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.
01:12Adjusting a Traverse
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
01:17Rolling Resistance: Problem Solving
Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...