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    10117 Berlin

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The Gut-Brain Axis and Behavior

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ECTS and Course type

ECTS: 3.0

Course type: Lecture/Seminar

All organisms must procure energy to survive. As such, many strategies have evolved to optimize the acquisition, use and storage of energy sources. Energetic value must be sensed, and costs determined and balanced against the physiological state of the organism and competing demands on behavior, such as seeking safety or showing aggression to secure a mate. To accomplish this, peripheral signals about acute and stored energy must be integrated with brain mechanisms regulating both metabolism and behavior. Until recently, metabolic and behavioral regulation were treated as operating relatively independently and often described as competing homeostatic and hedonic forces over behavior. However, this artificial boundary has begun to dissolve and with it the realization has emerged that mind and metabolism are highly integrated. More specifically, the biological imperative of optimal energy management results in metabolic signals having the potential to influence every facet of cognition, from basic perception to executive functioning, mood, affect and social interactions. Likewise, cognitive operations can directly impact metabolism, enabling organisms to bring all sources of information together in ensure optimal metabolic and behavioral “decision making".

Target audience

Enrollment in a Master’s degree course or PhD program in Berlin/Brandenburg, Audits from Postdocs/Undergraduates will be allowed with prior email confirmation

Date and time

Weekly, Tuesdays 17-19hr CEST (10-13hr EST), August 30th - December 7th
NOTE: The first session with the local students will be held on August 31st 2021, using Microsoft Teams.



Learning outcome

This course will introduce the student to the gut-brain axis and its role in behavior. We begin with a series of lectures on the basics to provide an understanding of the types of signals that are used to communicate between the brain and the body. Then we review functions that are shaped or impacted by the gut-brain pathways. The didactic aspect of the course concludes with lectures that overview disorders in which gut-brain signaling plays a pathophysiological role. Students will be asked to make journal club style presentations, work together in small groups to design a conference symposium proposal and write a final paper on a topic of their choice. The course will conclude with symposium proposal presentations by the students.


Introduction to the gut-brain axis: Ivan de Araujo

  • Brain Sensory Circuits
  • Direct sensing of nutrients by the brain
  • Direct sensing of hormones by the brain
  • Microbiome and brain
  • Vagus signaling in the obese state
  • Gut-brain neural circuits of reward rodents
  • Gut-brain neural circuits of reward humans
  • Gut-brain axis and:
    • nonfood reinforcement
    • cognition humans
    • neuroeconomics
    • maternal nutrition
    • alcohol
    • depression
    • addiction
    • autism


The final examination will be an oral exam where the students work in teams to develop a project idea related to the ‘next idea/experimental question’ based on the content of one (or more) of the lectures. The students will prepare a poster/presentation of the proposed project and then answer questions regarding the proposed project from their peers. The resulting presentation and discussion will be evaluated.

Requirement for the allocation of credits
Regular and active participation in the exercises, after each lecture students must submit 1 Question/Answer about the specific lecture via email to both Prof. Park and Dr. Lippert by 17hr the following Wednesday.  

Final exam (= module exam) after the module
Exam content: material of the lecture and exercises


Mandatory: None

Further: None