Roll Plane Rotations
Roll Plane Rotations - Related Videos
07:24
Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
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2025
The methodology explored visual and vestibular contributions to gaze stabilization during optokinetic and whole-body rotations. Stimulations were carried out through visual, vestibular, and visuovestibular trials. Torsional eye-movement gain and nystagmus frequencies served as indicators for the subcortical relay of sensory-specific motion information towards the reflexive brainstem response for each trial.
06:30
Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
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2020
The perception of gravity is commonly determined by the subjective visual vertical in the head upright position. The additional assessment at head tilts of ± 15° and ± 30° in the roll plane ensures increased information content for the detection of impaired graviceptive perception.
01:09
Rolling Without Slipping
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2023
People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is essential...
01:14
Rolling With Slipping
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2025
Rolling with slipping is a physical phenomenon that occurs when a rolling object experiences both rotational and linear motion but also experiences frictional forces that cause slipping. This phenomenon can occur in various situations, such as when a tire rolls on a wet road or a ball rolls on a rough surface. An object's rolling motion is characterized by its rotation around its axis, while linear motion refers to the object's translational motion along a surface. Frictional forces can affect...
05:56
Mental Rotation
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Visual mental imagery refers to the ability to conjure images in one’s mind’s eye. This allows people to process visual material above and beyond the constraints of a current point-of-view; for example, a person could imagine, using their mind’s eye, how something might look in a different color, or what it would look like if it were made from a different material or rotated and seen from a different perspective. Mental imagery...
FAQs
Two signal classes are informative during Roll Plane Rotations: angular acceleration activates the vertical semicircular canals, whereas altered head position relative to gravity changes utricular and saccular signaling. These channels therefore contribute different evidence about whether the nervous system is detecting movement itself or reinterpreting orientation as the head tilts. Separating these contributions helps researchers examine how vestibular pathways encode motion and maintain balance.
Angular acceleration provides a motion cue that stimulates the vertical semicircular canals during a roll stimulus. This allows researchers to examine how the nervous system responds to changes in head movement, rather than only to a sustained change in orientation. Measuring related eye, postural, or orientation responses can show how vestibular pathways transform motion signals into gaze and balance control.
Vestibular signals do not operate in isolation during these experiments. Researchers can examine how information from the inner ear is integrated with visual input and proprioception, the sense of body position derived from the body. This combined perspective is important because stable gaze, posture, and spatial orientation depend on the nervous system comparing multiple sensory sources rather than relying on vestibular signaling alone.
Researchers can assess vestibulo-ocular reflexes, postural control, and spatial orientation after controlled roll stimuli. The vestibulo-ocular reflex is especially informative because it links vestibular input to eye movements that help stabilize gaze. Postural and orientation measures add complementary evidence about balance and navigation, allowing a study to evaluate how the nervous system coordinates visual stability with whole-body control.
A typical study applies controlled roll movements and then examines the resulting vestibular, eye, postural, or orientation responses. The stimulus is interpreted in relation to angular acceleration and to changes in head position relative to gravity. Researchers can then compare these responses with visual and proprioceptive information to investigate sensory integration and determine how the nervous system represents orientation and motion.
These experiments reveal how vestibular pathways encode head motion, maintain stable gaze, and support balance and spatial orientation. That information is relevant to disorders affecting equilibrium because abnormal responses may indicate problems in vestibular processing or sensory integration. The same measures also provide a neuroscience context for understanding navigation, where accurate orientation depends on combining motion and gravity-related signals.