Computation in the human cerebral cortex uses less than 0.2 watts yet this great expense is optimal when considering communication costs

BioRxiv : the Preprint Server for Biology
William B Levy, V. G. Calvert


Darwinian evolution tends to produce energy-efficient outcomes. On the other hand, energy limits computation, be it neural and probabilistic or digital and logical. After establishing an energy-efficient viewpoint, we define computation and construct an energy-constrained, computational function that can be optimized. This function implies a specific distinction between ATP-consuming processes, especially computation per se vs action potentials and other costs of communication. As a result, the partitioning of ATP-consumption here differs from earlier work. A bits/J optimization of computation requires an energy audit of the human brain. Instead of using the oft-quoted 20 watts of glucose available to the brain, the partitioning and audit reveals that cortical computation consumes 0.2 watts of ATP while long-distance communication costs are over 20-fold greater. The bits/joule computational optimization implies a transient information rate of more than 7 bits/sec/neuron.

Related Concepts

Immune Response
Immune System
Immune Evasion
Theoretical Model
Nonlinear Dynamics
Phage Therapy
Entire Immune System
In Vitro [Publication Type]

Related Feeds

BioRxiv & MedRxiv Preprints

BioRxiv and MedRxiv are the preprint servers for biology and health sciences respectively, operated by Cold Spring Harbor Laboratory. Here are the latest preprint articles (which are not peer-reviewed) from BioRxiv and MedRxiv.

Bacteriophage: Phage Therapy

Phage therapy uses bacterial viruses (bacteriophages) to treat bacterial infections and is widely being recognized as an alternative to antibiotics. Here is the latest research.

Related Papers

The Lancet Infectious Diseases
Roelf S Breederveld
Physician Executive
Claude DeShazoPeter Schock
Contemporary Administrator for Long-term Care
J J Goff
© 2020 Meta ULC. All rights reserved