Electroencephalographic field influence on calcium momentum waves

Area of Science:

• Neuroscience
• Physics
• Computational Biology

Background:

• Macroscopic electroencephalographic (EEG) fields represent top-down neocortical mechanisms influencing neuronal processes like memory and attention.
• Bottom-up processes involve Ca(2+) waves, which significantly affect neuronal firing.

Purpose of the Study:

• To investigate the complementary effects between magnetic vector potential (A) from EEG and Ca(2+) momentum (p).
• To explore how macroscopic EEG fields influence Ca(2+) ion dynamics at molecular scales.

Main Methods:

• Utilized the statistical mechanics of neocortical interactions (SMNI) model to describe macrocolumnar EEG firings as magnetic vector potential A.
• Calculated the canonical momentum of Ca(2+) ions (q=-2e) in the presence of A, considering both classical and quantum mechanics.
• Coupled molecular-scale Ca(2+) wave dynamics with macroscopic A fields derived from scalp EEG data.

Main Results:

• Demonstrated that macroscopic EEG A fields significantly influence the momentum p of Ca(2+) ions.
• Showed that the p+qA interaction at tripartite synapses, mediated by a dynamic centering mechanism (DCM), maintains short-term memory (STM) during selective attention.

Conclusions:

• The SMNI model provides a framework for understanding how EEG fields modulate Ca(2+) dynamics.
• This interaction is crucial for maintaining short-term memory and selective attention, linking macroscopic brain activity to molecular neuronal processes.