Sensory feedback for upper limb prostheses.

In this chapter, we discuss the neurophysiological basis of how to provide sensory feedback to users with an upper limb prosthesis and discuss some of the theoretical issues that need to be considered when directly stimulating neurons in the somatosensory system. We focus on technologies that are currently available and discuss approaches that are most likely to succeed in providing natural perception from the artificial hand to the user. First, we discuss the advantages and disadvantages of providing feedback by stimulating directly the remaining afferents that originally innervated the arm and hand.

Quantitative eye movement recordings in a patient with acquired bilateral superior oblique palsy before and after a bilateral Harada-Ito procedure.

Purpose: We examined the effects of the Harada-Ito procedure on static and dynamic alignment in an adult with acquired bilateral superior oblique palsy (SOP).

Methods: 3D eye movements were recorded before and six weeks after a bilateral Harada-Ito procedure. Superior oblique muscle (SOM) size and contractility were assessed with orbital imaging.