Circuit Mechanisms of Sensorimotor Learning

Circuit Mechanisms of Sensorimotor Learning

The relationship between the brain and the environment is flexible, forming the foundation for our ability to learn. Here we review the current state of our understanding of the modifications in the sensorimotor pathway related to sensorimotor learning. We divide the process into three hierarchical levels with distinct goals: (1) sensory perceptual learning, (2) sensorimotor associative learnin...

Molecular and Circuit Mechanisms for Hippocampal Learning

The hippocampus is crucial for the formation of memories of facts and episodes (Scoville and Milner 1957; Jarrard 1993; Squire et al. 2004; Burgess et al. 2002). In storing the contents of a specific episode, the hippocampus must rapidly form and maintain representations of the temporal and spatial relationship of events and keep these representations distinct, allowing similar episodes to be d...

Learning Invariant Sensorimotor Behaviors: A Developmental Approach to Imitation Mechanisms

This paper examines the interest of a developmental approach applied to the design of autonomous robots and the understanding of adaptive behaviors, such as imitation. The proposed model is a neu-ral network architecture that learns and uses associations between vision and arm movements, even if the problem is ill posed (in the case of mapping problems between the visual space and the joints sp...

Sensorimotor Learning

Computational Mechanisms of Sensorimotor Control

In order to generate skilled and efficient actions, the motor system must find solutions to several problems inherent in sensorimotor control, including nonlinearity, nonstationarity, delays, redundancy, uncertainty, and noise. We review these problems and five computational mechanisms that the brain may use to limit their deleterious effects: optimal feedback control, impedance control, predic...