Information theory in vertebrate stress physiology

Area of Science:

• * Integrates information theory with endocrinology, specifically stress research.
• * Applies concepts from neuroscience, such as the free energy principle, to endocrinology.

Background:

• * Information theory has broad applications in biology but is underutilized in endocrinology.
• * Current stress models primarily focus on hormone concentrations, overlooking their informational content.
• * Hormone information content is crucial for individual health and evolutionary fitness.

Purpose of the Study:

• * Advocates for incorporating information theory into the study of stress endocrinology.
• * Proposes a shift from hormone concentration to hormone information content as a key research focus.
• * Explores how hormones, particularly glucocorticoids, encode and convey information.

Main Methods:

• * Reviews existing applications of information theory in biology and neuroscience.
• * Discusses the free energy principle as a framework for understanding hormonal information processing.
• * Suggests research avenues for investigating information encoding and cellular response to glucocorticoids.

Main Results:

• * Identifies a significant gap in the application of information theory within endocrinology.
• * Highlights the limitations of current stress models centered on hormone concentrations.
• * Presents the free energy principle as a potential theoretical basis for hormonal information processing.

Conclusions:

• * Recommends the integration of information theory to advance stress endocrinology research.
• * Emphasizes the importance of studying the information content of hormones for health and fitness.
• * Suggests novel research directions for understanding glucocorticoid information signaling.