Neural basis of survival behaviors

Our Goal

Through our work, we aim to construct a comprehensive framework that maps the neurobiological mechanisms underlying survival behaviors, including fear, aggression, and metabolic behaviors. We want to understand how neural circuits control their physiological expression and how disruptions in these circuits lead to psychiatric and neurological disorders. By studying how internal states (e.g., stress or hunger) influence both normal and maladaptive behaviors, we hope that our work will generate insights and inform management approaches of diverse disorders, including anxiety, depression, and aggression-related conditions.

Diagram showing how genes, cells, brain activity, and behavior interact in psychiatry, with focus on disorders and recovery.

Our Research

At the Stagkourakis Lab, we aim to uncover neural principles that govern innate behaviors by integrating advanced computational methods with the analysis of high-dimensional data acquired through cutting-edge neurotechnologies (including diverse microscopy techniques, electrophysiology, neurotransmitter, and hormone measurements - both in vivo and in vitro). Our research is dedicated to understanding how functional and maladaptive instinctual responses are encoded and modulated by the mammalian brain, using rodents as the primary animal model.

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Pinpointing Dysregulated Neural Circuits for Targeted Neuropsychiatric Interventions

Uncovering the dysregulated neural circuit mechanisms underlying human pathophysiology is crucial for understanding disorders such as PTSD, generalized anxiety, and metabolic or social dysfunctions. The same neural circuits that drive normal instinctual responses can, when dysregulated, give rise to these pathologies. Notably, their high comorbidity suggests overlapping circuit-level disruptions across clinically distinct conditions. In our research, we aim to pinpoint the critical neural sites of dysregulation and target them with neuromodulatory or pharmacological interventions to mitigate broad pathophysiological phenotypes.

Towards the Discovery of Neurobiological Principles Underlying Instincts

Animals can perform complex motor sequences without any prior experience—referred to as instinctual behavior. These extensive action programs often arise from gene-driven processes. A striking example is the newly hatched iguana (shown in the) that instinctively flees snake-infested terrain, activating prearranged neural circuits moments after first encountering sunlight. Our research aims to identify and map the neural circuit architecture that drives such instinctive responses, with a particular focus on fear-based, social, and homeostatic behaviors.

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"It is what we know already that often prevents us from learning."

Claude Bernard
Physiologist

"The future of neurology belongs to the study of the neuron—its structure, function, and connections."

Camillo Golgi
Physician & Pathologist, Nobel Laureate in Physiology or Medicine, 1906

"Science is a global enterprise; knowledge does not respect national borders."

Venki Ramakrishnan
Structural Biologist, Nobel Laureate in Chemistry, 2009

"Evolution is the best problem solver in the world; I’m just copying what happens in nature."

Frances Arnold
Chemical Engineer, Nobel Laureate in Chemistry, 2018

"Persistence is absolutely essential in science. You often fail many times, but each failure leads you closer to a solution."

Avram Hershko
Biochemist, Nobel Laureate in Chemistry, 2004

"Working with the brain is like exploring a new planet; every step reveals something astonishing."

Torsten Wiesel
Neurophysiologist, Nobel Laureate in Physiology or Medicine, 1981

"Science is iterative, and every piece of knowledge stands on the shoulders of those before it."

Leland Hartwell
Geneticist, Nobel Laureate in Physiology or Medicine, 2001

"Discovery is not a linear process; it's a series of leaps and stumbles, guided by data and curiosity."

Bruce Beutler
Immunologist, Nobel Laureate in Physiology or Medicine, 2011

"The big leaps in science often come from unexpected places, and curiosity is the engine that drives them."

Carol W. Greider
Molecular Biologist, Nobel Laureate in Physiology or Medicine, 2009

"We need science to understand the world around us, and we need compassion to make use of that knowledge responsibly."

Françoise Barré-Sinoussi
Virologist, Nobel Laureate in Physiology or Medicine, 2008

"If you know you are on the right track, if you have this inner knowledge, then nobody can turn you off… no matter what they say."

Barbara McClintock
Cytogeneticist, Nobel Laureate in Physiology or Medicine, 1983

"Nothing is too wonderful to be true, if it be consistent with the laws of nature."

Michael Faraday
Physicist & Chemist

"The reward for work well done is the opportunity to do more."

Jonas Salk
Medical Researcher, developed Polio Vaccine

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Werner Heisenberg
Physicist, Nobel Laureate in Physics, 1932

"In science one tries to tell people, in such a way as to be understood by everyone, something that no one ever knew before."

Paul Dirac
Theoretical Physicist, Nobel Laureate in Physics, 1933

"We must look for the origins of mental processes in the physiological processes of the brain."

Karl Lashley
Psychologist & Neuroscientist

"Unraveling the brain’s mysteries requires curiosity and a willingness to embrace the unknown."

Edvard Moser
Neuroscientist, Nobel Laureate in Physiology or Medicine, 2014

"To navigate life is a fundamental property of all animals. Understanding how the brain does this opens a window on cognition itself."

John O’Keefe
Neuroscientist, Nobel Laureate in Physiology or Medicine, 2014

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Jean Piaget
Developmental Psychologist

"Our minds are all we have. They are all we have ever had. And they are all we can offer others."

Sam Harris
Neuroscientist & Philosopher

"The major job of the brain is to orchestrate conflict and resolution."

Robert Sapolsky
Neuroscientist & Biologist

"In the long history of life, those who learned to collaborate and improvise most effectively have prevailed."

Charles Darwin
Naturalist & Geologist

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Brenda Milner
Neuropsychologist

"The great pleasure and feeling in my right brain is more than my left brain can find the words to tell you."

Roger Sperry
Neuropsychologist, Nobel Laureate in Physiology or Medicine, 1981

"Science cannot solve the ultimate mystery of nature because, in the last analysis, we ourselves are part of the mystery we are trying to solve."

Max Planck
Physicist, Nobel Laureate in Physics, 1918

"That brain of mine is something more than merely mortal; as time will show."

Ada Lovelace
Mathematician & Computer Pioneer

"The beauty of mathematics only shows itself to more patient followers."

Maryam Mirzakhani
Mathematician

"Somewhere, something incredible is waiting to be known."

Carl Sagan
Astronomer & Astrophysicist

"The brain is a world consisting of a number of unexplored continents and great stretches of unknown territory."

Santiago Ramón y Cajal
Neuroscientist, Nobel Laureate in Physiology or Medicine, 1906

"Science is the belief in the ignorance of experts."

Richard Feynman
Physicist, Nobel Laureate in Physics, 1965

"The biology of the mind bridges the sciences concerned with the natural world and the humanities concerned with the meaning of human experience."

Eric Kandel
Neuroscientist, Nobel Laureate in Physiology or Medicine, 2000

"Nothing in life is to be feared; it is only to be understood."

Marie Curie
Physicist & Chemist, Nobel Laureate in Physics 1903 and Chemistry 1911

"People are always selling the idea that people with mental illness are suffering. I believe it’s more of a struggle… and often it’s quite rewarding."

John Nash
Mathematician & Economist, Nobel Laureate in Economic Sciences, 1994

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Alan Turing
Mathematician & Computer Scientist

"Prediction is very difficult, especially if it’s about the future."

Niels Bohr
Physicist, Nobel Laureate in Physics, 1922

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Albert Einstein
Physicist, Nobel Laureate in Physics, 1921

"Perception is always inference, and these inferences are made by the brain automatically."

Karl Friston
Neuroscientist & Theorist

"You, your joys and your sorrows, your memories and your ambitions, your sense of personal identity and free will, are in fact no more than the behavior of a vast assembly of nerve cells and their associated molecules."

Francis Crick
Molecular Biologist & Neuroscientist, Nobel Laureate in Physiology or Medicine, 1962

"Intelligence is the ability to adapt to change."

Stephen Hawking
Theoretical Physicist

"Above all, don’t fear difficult moments. The best comes from them."

Rita Levi-Montalcini
Neuroscientist, Nobel Laureate in Physiology or Medicine, 1986

“I would rather have questions that can’t be answered than answers that can’t be questioned.”

Richard Feynman
Physicist, Nobel Laureate in Physics, 1965
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