Abstract
The visual system is poorly sensitive to arbitrary accelerations, but accurately detects the effects of gravity on a target motion. Here we review behavioral and neuroimaging data about the neural mechanisms for dealing with object motion and egomotion under gravity. The results from several experiments show that the visual estimates of a target motion under gravity depend on the combination of a prior of gravity effects with on-line visual signals on target position and velocity. These estimates are affected by vestibular inputs, and are encoded in a visual-vestibular network whose core regions lie within or around the Sylvian fissure, and are represented by the posterior insula/retroinsula/temporo-parietal junction. This network responds both to target motions coherent with gravity and to vestibular caloric stimulation in human fMRI studies. Transient inactivation of the temporo-parietal junction selectively disrupts the interception of targets accelerated by gravity.
| Original language | English |
|---|---|
| Article number | 101 |
| Journal | Frontiers in Integrative Neuroscience |
| Volume | 7 |
| Issue number | 1 DEC |
| DOIs | |
| Publication status | Published - Dec 26 2013 |
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Keywords
- Insula
- Interception
- Internal model
- Microgravity
- Self-motion
- Temporo-parietal junction
- Time perception
ASJC Scopus subject areas
- Sensory Systems
- Cognitive Neuroscience
- Cellular and Molecular Neuroscience
Cite this
Visual gravitational motion and the vestibular system in humans. / Lacquaniti, Francesco; Bosco, Gianfranco; Indovina, Iole; La Scaleia, Barbara; Maffei, Vincenzo; Moscatelli, Alessandro; Zago, Myrka.
In: Frontiers in Integrative Neuroscience, Vol. 7, No. 1 DEC, 101, 26.12.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Visual gravitational motion and the vestibular system in humans
AU - Lacquaniti, Francesco
AU - Bosco, Gianfranco
AU - Indovina, Iole
AU - La Scaleia, Barbara
AU - Maffei, Vincenzo
AU - Moscatelli, Alessandro
AU - Zago, Myrka
PY - 2013/12/26
Y1 - 2013/12/26
N2 - The visual system is poorly sensitive to arbitrary accelerations, but accurately detects the effects of gravity on a target motion. Here we review behavioral and neuroimaging data about the neural mechanisms for dealing with object motion and egomotion under gravity. The results from several experiments show that the visual estimates of a target motion under gravity depend on the combination of a prior of gravity effects with on-line visual signals on target position and velocity. These estimates are affected by vestibular inputs, and are encoded in a visual-vestibular network whose core regions lie within or around the Sylvian fissure, and are represented by the posterior insula/retroinsula/temporo-parietal junction. This network responds both to target motions coherent with gravity and to vestibular caloric stimulation in human fMRI studies. Transient inactivation of the temporo-parietal junction selectively disrupts the interception of targets accelerated by gravity.
AB - The visual system is poorly sensitive to arbitrary accelerations, but accurately detects the effects of gravity on a target motion. Here we review behavioral and neuroimaging data about the neural mechanisms for dealing with object motion and egomotion under gravity. The results from several experiments show that the visual estimates of a target motion under gravity depend on the combination of a prior of gravity effects with on-line visual signals on target position and velocity. These estimates are affected by vestibular inputs, and are encoded in a visual-vestibular network whose core regions lie within or around the Sylvian fissure, and are represented by the posterior insula/retroinsula/temporo-parietal junction. This network responds both to target motions coherent with gravity and to vestibular caloric stimulation in human fMRI studies. Transient inactivation of the temporo-parietal junction selectively disrupts the interception of targets accelerated by gravity.
KW - Insula
KW - Interception
KW - Internal model
KW - Microgravity
KW - Self-motion
KW - Temporo-parietal junction
KW - Time perception
UR - http://www.scopus.com/inward/record.url?scp=84891548910&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84891548910&partnerID=8YFLogxK
U2 - 10.3389/fnint.2013.00101
DO - 10.3389/fnint.2013.00101
M3 - Article
AN - SCOPUS:84891548910
VL - 7
JO - Frontiers in Integrative Neuroscience
JF - Frontiers in Integrative Neuroscience
SN - 1662-5145
IS - 1 DEC
M1 - 101
ER -