The Gliocentric Brain.

Area of Science:

• Neuroscience
• Cellular Biology

Background:

• The Neuron Doctrine has been a foundational concept in neuroscience for over a century.
• Complex cognitive functions like memory, consciousness, and learning remain poorly understood.
• Existing models focusing solely on neurons and synapses have not fully elucidated brain function.

Purpose of the Study:

• To critically review the Neuron Doctrine and its associated hypotheses.
• To examine the empirical data from the past three decades regarding brain function.
• To highlight the role of non-neuronal cells, particularly astrocytes, in higher brain functions.

Main Methods:

• Critical review of existing literature and empirical data.
• Examination of the Neuron Doctrine, synaptic function, neural networks, gamma synchrony, and cortical minicolumns.
• Analysis of research on non-neuronal cells, specifically astrocytes, and their interaction with neurons.

Main Results:

• The Neuron Doctrine and associated hypotheses (synapses, neural networks, gamma synchrony, cortical minicolumns) are fundamentally flawed.
• Non-neuronal cells, especially astrocytes, play a direct and indirect role in functions previously ascribed solely to neurons.
• Glia continuously interact with neurons and neural networks, significantly influencing brain information processing.

Conclusions:

• A paradigm shift beyond purely neurocentric models is necessary for advancing neuroscience.
• Recognizing the integral role of non-neuronal cells is crucial for understanding higher brain functions.
• Broadening the scope of brain information processing to include glia will overcome current impasses in understanding brain function and disorders.