Abstract: There is provided a compound of Formula (I): or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition of wherein the various substituents are defined herein,

Abstract: Provided herein is A compound of Formula I: or a pharmaceutically acceptable salt thereof, wherein the various substituents are described herein.

Abstract: Systems and methods to improve video conferencing may include various improvements and modifications to image and audio data to simulate mutual presence among users. For example, automated positioning and presentation of image data of users via presentation devices may present users at a position, size, and scale to simulate mutual presence of users within a same physical space. In addition, rendering image data of users from virtual camera positions via presentation devices may simulate mutual eye gaze and mutual presence of users. Further, blending a background, or accentuating a user, within image data that is presented via presentation devices may match visual characteristics of the environment or the user to simulate mutual presence of users. Moreover, dynamic steering of individual audio transducers of an audio transducer array, and simulating audio point sources using a combination of speakers, may simulate direct communication and mutual presence of users.