Abstract: Various implementations disclosed herein include devices, systems, and methods that provide customized feedback content during a meditation experience. For example, an example process may include obtaining physiological data via one or more sensors, determining that an attentive state based on the physiological data, customizing feedback content based on a user attribute to change the attentive state during the meditation mode, and providing the customized feedback content during the meditation mode after a delay time based on the user attribute.

Abstract: Liquid crystal polymers, which may be used for optical information storage, either alone or in mixture with other liquid crystals, are of the general formula ##STR1## wherein the mesogenic grouping M has a general structure ##STR2## wherein the rings P and Q are selected from phenyl, trans-cyclohexyl, pyridyl, pyrimidinyl, dioxanyl, and bicyclo (2.2.2) octyl. The rings P and/or Q may carry lateral substituents, preferably Me or F. The general structure of Formula (I) may represent a homopolymer or a copolymer.

Abstract: Liquid crystal polymers of general formula ##STR1## wherein the ratio b : a is less than 3 and greater than O, X is a mesogenic group of formula ##STR2## where A and B are cyclic groups, preferably phenyl, which may carry lateral substituents, preferably methyl, R may be F, CH.sub.3, CN, R.sup.1 , OR.sup.1 or COOR.sup.1 where R.sup.1 is alkyl, Y is COO.sub.1 OOC, CH.sub.2 CH.sub.2, c is 0 or 1. A preferred group X is ##STR3## The polymers may be used for optical information storage either alone or in mixture with other liquid crystals for example with smectic materials of formula ##STR4## where R" is alkyl or alkoxy and r is 0 or 1.