Neuronal avalanche dynamics and functional connectivity elucidate information propagation in vitro

Area of Science:

• Neuroscience
• Complex Systems
• Computational Neuroscience

Background:

• Cascading activity is prevalent in biological neural networks.
• Information propagation depends on network structure and element organization.

Purpose of the Study:

• To investigate the interplay between network dynamics and functional connectivity in developing neuronal networks.
• To understand how neuronal networks balance integration and segregation for information processing.

Main Methods:

• Studied neuronal networks matured in vitro over 50 days.
• Recorded electrophysiological activity using microelectrode arrays.
• Analyzed avalanche dynamics and functional connectivity.

Main Results:

• In vitro neuronal networks maintain a slightly subcritical state.
• A balance between integration and segregation was observed.
• Correlations between activity propagation and functional connectivity were identified.

Conclusions:

• Functional connectivity and avalanche dynamics are complementary approaches for studying in vitro neuronal information propagation.
• Findings can inform the design of engineered computational substrates.