Paper maps physics limits of whole-brain neural recording
TL;DR
- The paper reframes whole-brain, millisecond neural recording as a physics-limited problem, not an engineering-iteration problem.
- Four recording modalities are analyzed against the mouse brain: optical, electrical, magnetic resonance, and molecular.
- The 18-author preprint, including Dario Amodei alongside Marblestone, Boyden, Church and Kording, was submitted 24 June 2013.
"Simultaneously measuring the activities of all neurons in a mammalian brain at millisecond resolution is a challenge beyond the limits of existing techniques in neuroscience," the arxiv preprint opens. Rather than survey what researchers are attempting, the authors ask what physics allows.
They score four families of technique against the mouse brain: "optical, electrical, magnetic resonance, and molecular modalities of neural recording." The scoring axes are the limitations imposed by "spatiotemporal resolution, energy dissipation, and volume displacement" — how sharp the measurement is, how much heat the hardware sheds, how much space it occupies inside tissue. A separate strand studies "the physics of powering and communicating with microscale devices embedded in brain tissue."
Eighteen authors are listed, among them Adam H. Marblestone, Edward S. Boyden, George M. Church, Konrad P. Kording and Dario Amodei. The preprint was first submitted on 24 June 2013 and last revised on 16 September 2013.
The abstract publishes no per-modality numbers and no ranking of which modality scales best; those results sit in the body of the paper.
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Originally reported by arxiv.org
Read the original article →Original headline: Physical Principles for Scalable Neural Recording