Abstract: An object of the invention is to provide an agent for preventing or improving decline in brain function such as decreased perception ability, decreased memory learning ability, decreased thinking ability, decreased concentration, decreased attention, decreased judgment ability, depression, and decreased exercise performance caused thereby. According to the invention, an agent for protecting brain neuronal cells, comprising citrulline or a salt thereof and citicoline or a salt thereof as active ingredients as well as an agent for preventing or improving decline in brain function, comprising citrulline or a salt thereof and citicoline or a salt thereof as active ingredients is provided.

Abstract: The present invention provides a pharmaceutical composition for treating or preventing a cognitive disease or disorder, comprising a compound represented by Formula (I), an enantiomer thereof a diastereomer thereof, or a pharmaceutically acceptable salt thereof.

Abstract: An object of the invention is to provide an agent for preventing or improving decline in brain function such as decreased perception ability, decreased memory learning ability, decreased thinking ability, decreased concentration, decreased attention, decreased judgment ability, depression, and decreased exercise performance caused thereby. According to the invention, an agent for protecting brain neuronal cells, comprising citrulline or a salt thereof and citicoline or a salt thereof as active ingredients as well as an agent for preventing or improving decline in brain function, comprising citrulline or a salt thereof and citicoline or a salt thereof as active ingredients is provided.

Abstract: An objection of the present invention is to provide an agent for preventing or improving decline in brain function such as decreased perception ability, decreased memory learning ability, decreased thinking ability, decreased concentration, decreased attention, decreased judgment ability, depression, and decreased exercise performance caused thereby. According to the present invention, an agent for protecting brain neuronal cells, comprising citrulline or a salt thereof and citicoline or a salt thereof as active ingredients as well as an agent for preventing or improving decline in brain function, comprising citrulline or a salt thereof and citicoline or a salt thereof as active ingredients is provided.

Abstract: This invention provides a pharmaceutical composition for treating or preventing synucleinopathy comprising a compound represented by formula (I), or a pharmaceutically acceptable salt thereof.

Abstract: An objection of the present invention is to provide an agent for preventing or improving decline in brain function such as decreased perception ability, decreased memory learning ability, decreased thinking ability, decreased concentration, decreased attention, decreased judgment ability, depression, and decreased exercise performance caused thereby. According to the present invention, an agent for protecting brain neuronal cells, comprising citrulline or a salt thereof and glutathione or a salt thereof as active ingredients as well as an agent for preventing or improving decline in brain function, comprising citrulline or a salt thereof and glutathione or a salt thereof as active ingredients is provided.

Abstract: This invention provides a pharmaceutical composition for treating or preventing synucleinopathy comprising a compound represented by formula (I), or a pharmaceutically acceptable salt thereof.

Abstract: According to an aspect of the present invention, it is possible to continue an interaction at an appropriate timing without the need for a high processing capacity, even in a case where a topic of a conversation is changed. A data structure in accordance with an aspect of the present invention is a data structure including a set of pieces of information, the set of pieces of information at least including: an utterance content (Speak) which is outputted with respect to a user; a response content (Return) which matches the utterance content and causes a conversation to be held; and attribute information (Entity) indicative of an attribute of the utterance content.

Abstract: The present invention provides a pharmaceutical composition used in improving brain function including a compound of formula (I).

Abstract: An objection of the present invention is to provide an agent for preventing or improving decline in brain function such as decreased perception ability, decreased memory learning ability, decreased thinking ability, decreased concentration, decreased attention, decreased judgment ability, depression, and decreased exercise performance caused thereby. According to the present invention, an agent for protecting brain neuronal cells, comprising citrulline or a salt thereof and citicoline or a salt thereof as active ingredients as well as an agent for preventing or improving decline in brain function, comprising citrulline or a salt thereof and citicoline or a salt thereof as active ingredients is provided.

Abstract: An objection of the present invention is to provide an agent for preventing or improving decline in brain function such as decreased perception ability, decreased memory learning ability, decreased thinking ability, decreased concentration, decreased attention, decreased judgment ability, depression, and decreased exercise performance caused thereby. According to the present invention, an agent for protecting brain neuronal cells, comprising citrulline or a salt thereof and glutathione or a salt thereof as active ingredients as well as an agent for preventing or improving decline in brain function, comprising citrulline or a salt thereof and glutathione or a salt thereof as active ingredients is provided.

Abstract: The present invention provides a pharmaceutical composition used in improving brain function including a compound of formula (I).