Lecture

Spatial Self-Motion Estimation in Cerebellum

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Description

This lecture explores the spatial self-motion estimation for motor control in the cerebellum, focusing on the brainstem-cerebellar network, resolving tilt/translation ambiguity, and the role of vestibular signals in postural control and reaching. The instructor discusses the integration of multimodal sensory signals, the computation of body-centered motion estimates, and the sophisticated processing of vestibular cues for online reach control.

Official source

Ontological neighbourhood

Biology

Anatomy: Neuroanatomy

Physics

Mechanics: Classical mechanics

Related concepts (32)

Vestibular system

The vestibular system, in vertebrates, is a sensory system that creates the sense of balance and spatial orientation for the purpose of coordinating movement with balance. Together with the cochlea, a part of the auditory system, it constitutes the labyrinth of the inner ear in most mammals. As movements consist of rotations and translations, the vestibular system comprises two components: the semicircular canals, which indicate rotational movements; and the otoliths, which indicate linear accelerations.

Cerebellum

The cerebellum (Latin for "little brain") is a major feature of the hindbrain of all vertebrates. Although usually smaller than the cerebrum, in some animals such as the mormyrid fishes it may be as large as it or even larger. In humans, the cerebellum plays an important role in motor control. It may also be involved in some cognitive functions such as attention and language as well as emotional control such as regulating fear and pleasure responses, but its movement-related functions are the most solidly established.

Motor control

Motor control is the regulation of movement in organisms that possess a nervous system. Motor control includes reflexes as well as directed movement. To control movement, the nervous system must integrate multimodal sensory information (both from the external world as well as proprioception) and elicit the necessary signals to recruit muscles to carry out a goal. This pathway spans many disciplines, including multisensory integration, signal processing, coordination, biomechanics, and cognition, and the computational challenges are often discussed under the term sensorimotor control.

Sense of balance

The sense of balance or equilibrioception is the perception of balance and spatial orientation. It helps prevent humans and nonhuman animals from falling over when standing or moving. Equilibrioception is the result of a number of sensory systems working together; the eyes (visual system), the inner ears (vestibular system), and the body's sense of where it is in space (proprioception) ideally need to be intact. The vestibular system, the region of the inner ear where three semicircular canals converge, works with the visual system to keep objects in focus when the head is moving.

Motor controller

A motor controller is a device or group of devices that can coordinate in a predetermined manner the performance of an electric motor. A motor controller might include a manual or automatic means for starting and stopping the motor, selecting forward or reverse rotation, selecting and regulating the speed, regulating or limiting the torque, and protecting against overloads and electrical faults. Motor controllers may use electromechanical switching, or may use power electronics devices to regulate the speed and direction of a motor.

Related lectures (64)

Biological Intelligence: Motor Learning and Neuromodulation

Explores the relationship between biological intelligence, motor learning, and the role of neuromodulation in adaptive behavior.

Sensorimotor Interactions MOOC: Cellular Mechanisms of Brain Function

Delves into the cellular mechanisms of sensorimotor interactions in the brain, emphasizing whisker movement control.

Modern Prosthetics: Enhancing Sensory Perception and Motor Control

Delves into modern prosthetics, emphasizing sensory perception enhancement and motor control for amputees.

Cerebellum: Neural Control of Movement

Explores the neural control of movement, focusing on the cerebellum's role in motor learning and coordination.

Optimization of Neuroprosthetic Systems