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Updated: Feb 8, 2026

Perspectives on Neuroscience

Perspectives on Neuroscience

Published on: July 31, 2007

Does Neuroscience Leave Room for Free Will?

Kevin J Mitchell¹

¹Smurfit Institute of Genetics and Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland.

Trends in Neurosciences

|July 3, 2018

Summary

This study explores how physical indeterminacy in neuroscience could allow for genuine free will. It suggests that mental states, like beliefs and intentions, can influence decisions through neuronal firing patterns.

Keywords:

agency compatibilism determinism emergence meaning reductionism

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Perspectives on Neuroscience

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Area of Science:

Neuroscience
Philosophy of Mind
Physics

Background:

Reductive mechanistic neuroscience posits that physical laws govern actions, rendering mental states epiphenomenal.
This perspective challenges traditional notions of free will and agency.
A gap exists in understanding how mental content influences physical processes.

Purpose of the Study:

To reconcile physical determinism with the existence of free will and genuine agency.
To investigate the role of physical indeterminacy in cognitive processes.
To propose a framework where mental states possess causal efficacy.

Main Methods:

Conceptual analysis integrating principles from neuroscience, physics, and philosophy.
Examination of the implications of physical indeterminacy on neuronal firing patterns.
Argumentation for the causal power of information encoded in neural activity.

Main Results:

Physical indeterminacy offers a potential mechanism for mental states to exert causal influence.
Information in neuronal firing patterns (beliefs, goals, intentions) can have genuine causal power.
The proposed framework allows for meaningful agency within a physicalist view.

Conclusions:

Free will and agency are compatible with a physicalist understanding of the brain.
Mental content, when encoded in neuronal firing, can be causally effective due to physical indeterminacy.
This approach offers a novel perspective on the mind-body problem in neuroscience.