A review of genetically encoded fluorescent indicators of neuronal activity arg…

A review of genetically encoded fluorescent indicators of neuronal activity argues that the field's progress in mouse-cortex circuit interrogation has been bound primarily by indicator biophysics (kinetics, dynamic range, signal-to-noise) rather than optics — framing the methodological ceiling for any recurrent-circuit measurement that relies on fluorescence reporting.

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  "doi": "10.1038/nn.4359",
  "claim": "A review of genetically encoded fluorescent indicators of neuronal activity argues that the field's progress in mouse-cortex circuit interrogation has been bound primarily by indicator biophysics (kinetics, dynamic range, signal-to-noise) rather than optics — framing the methodological ceiling for any recurrent-circuit measurement that relies on fluorescence reporting.",
  "cite_key": "Lin2016",
  "evidence": "Review of classes of fluorescent activity indicators emphasizing indicator-driven limits on in vivo recording fidelity.",
  "effect_size": "qualitative review of GECI classes and their biophysical limits",
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  "study_system": "Review (mammalian and nonmammalian indicators)",
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  "claim_source_sentence": "In this review, we describe and assess different classes of fluorescent protein indicators of neural activity.",
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  "effect_size_source_sentence": "creating improved technologies for large-scale recordings of neural activity in the live brain is a crucial goal in neuroscience."
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15. Methodological limits and emerging tools — what current mouse-cortex tools cannot yet measure about E→E recurrence (subthreshold network activity, fast plasticity in vivo, millimetre-scale dynamic connectomes), and what is on the near horizon

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