Glossary

grasp stability control The control of grip forces such that they are adequate to prevent accidental slips but not so large as to cause unnecessary fatigue or damage to the object or hand.

haptic perception Perception through the hand based on tactile and somatosensory information.

internal models Neural circuits that mimic the behavior of the motor system and environment and capture the mapping between motor outputs and sensory inputs.

precision grip The grip formed when grasping an object with the distal tips of digits. Usually refers to grasping with the tips of the thumb and index finger on either side of an object.

sensorimotor control The use of both predicted and unexpected sensory information in the control of action.

The human hand and the brain are close partners in two important and closely interconnected functions: exploration of the physical world and reshaping of parts of this world through manipulation. The highly versatile functions of the human hand depend on both its anatomical structure and the neural machinery that supports the hand. This article focuses on the sensorimotor control of hand movements in object manipulations hallmark of skilled manual action. The article also examines relationships between the two main functions of the hand-object perception and object manipulation.

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