Abstract: In some embodiments, the present disclosure includes techniques and user interfaces for interacting with graphical user interfaces using gaze. In some embodiments, the present disclosure includes techniques and user interfaces for repositioning virtual objects. In some embodiments, the present disclosure includes techniques and user interfaces for transitioning modes of a camera capture user interface.

Abstract: Videos are presented in an extended reality environment in a spatially aware manner such that a position of each frame of the video in the extended reality environment is based on one or more of a position, orientation, and field of view of a camera that captured the video.

Abstract: A method to improve neural cell viability in brain or spinal cord tissue after brain or spinal cord injury or surgery is provided. This method comprises applying a sterile liquid medium to the brain or spinal cord tissue, wherein the sterile aqueous liquid medium comprises 0 to about 3000 ?M CaCl2, about 0.1 to about 1.2 ?M Fe(NO3)3, about 2500 to about 10000 ?M KCl, 0 to about 4000 ?M MgCl2, about 30000 to about 150000 ?M NaCl, about 100 to about 30000 ?M NaHCO3, about 250 to about 4000 ?M NaH2PO4, about 0.01 to about 0.4 ?M sodium selenite, about 0.

Abstract: A method to improve neural cell viability in brain or spinal cord tissue after brain or spinal cord injury or surgery is provided. This method comprises applying a sterile liquid medium to the brain or spinal cord tissue, wherein the sterile aqueous liquid medium comprises 0 to about 3000 &mgr;M CaCl2, about 0.1 to about 1.2 &mgr;M Fe(NO3)3, about 2500 to about 10000 &mgr;M KCl, 0 to about 4000 &mgr;M MgCl2, about 30000 to about 150000 &mgr;M NaCl, about 100 to about 30000 &mgr;M NaHCO3, about 250 to about 4000 &mgr;M NaH2PO4, about 0.01 to about 0.4 &mgr;M sodium selenite, about 0.

Abstract: The present invention provides a minimal essential medium for maintaining neural cell or tissue viability in an environment containing ambient levels of CO2. The medium contains less than about 2000 &mgr;M bicarbonate, a buffer having a pKa of from about 6.9 to about 7.7, wherein the medium is free of ferrous sulfate, glutamate and aspartate, from 0 to about 3000 &mgr;M CaCl2, from about 0.05 to about 0.8 &mgr;M Fe(NO3)3, from about 2500 to about 10000 &mgr;M KCl, from 0 to about 4000 &mgr;M MgCl2, from about 74000 to about 103000 &mgr;M NaCl, from about 400 to about 2000 &mgr;M NaHCO3, from about 250 to about 4000 &mgr;M NaH2PO4, from about 0.2 to about 2 &mgr;M ZnSO4, from about 2500 to about 50000 &mgr;M glucose and from about 23 to about 500 &mgr;M sodium pyruvate. The present invention also provides a process of extending neural cell or tissue viability in an atmosphere having ambient levels of carbon dioxide whereby the neural cells or tissue are placed in such a medium.

Abstract: Substrates containing a copolymer of sequentially alternating lysine and alanine residues are provided. The use of those substrates for promoting neuron survival and axon growth are also provided.