1. A system, comprising: a memory that stores computer-executable components; a processor that executes the computer-executable components stored in the memory, wherein the computer-executable components comprise: a feedback component that monitors a mental state of a user during provision of a presentation to the user, wherein the presentation comprises a spoken description of a topic; an analysis component that determines, based on a determination that the mental state comprises a defined type of mental state included in a set of two or more defined types of mental states, a portion of the topic associated with causation of the defined type of mental state; an auxiliary information component that determines auxiliary information about the portion of the topic based on the defined type of mental state, wherein the auxiliary information component further determines a type of the auxiliary information based on a learning style of the user; and a communication component that provides the auxiliary information to a device employed by the user during the presentation for rendering by the device in association with presentation of the portion of the topic.