Revisiting the Quantum Brain Hypothesis: Toward Quantum (Neuro)biology?

Area of Science:

• Neuroscience
• Quantum Biology
• Complex Systems Theory

Background:

• The nervous system is a complex, non-linear dynamical system with numerous feedback loops.
• Conventional wisdom suggests quantum fluctuations in the brain are self-averaging and functionally insignificant.
• This assumption may be flawed due to the high sensitivity of complex systems to initial conditions.

Purpose of the Study:

• To explore the potential role of quantum dynamics in neuronal computations.
• To investigate whether quantum stochasticity influences the behavior of complex biological systems like the brain.
• To highlight the emerging field of quantum biology and its implications for neuroscience.

Main Methods:

• Theoretical analysis of non-linear dynamical systems.
• Review of existing evidence from quantum biology in non-neuronal systems.
• Conceptual exploration of quantum effects in neuronal cells.

Main Results:

• Microscopic fluctuations, including quantum ones, can be amplified in non-linear complex systems.
• Quantum dynamics may influence neuronal computations and the overall behavior of the nervous system.
• Biological evolution might exploit quantum stochasticity, as suggested by findings in non-neuronal systems.

Conclusions:

• Quantum events could play a non-trivial role in neuronal cells.
• Quantum dynamics may contribute to the complexity, variability, and computational power of neuronal activity.
• Further experimental research is needed to validate the influence of quantum events on brain function.