Evidence map›Paper›PMID 27698240›Full record

ArticleCold Spring Harbor protocols2016

Combining Optogenetics and Electrophysiology to Analyze Projection Neuron Circuits.

Naoki Yamawaki, Benjamin A Suter, Ian R Wickersham, Gordon M G Shepherd

Open access · bronzeAbstract read
In one paragraph

Article in Cold Spring Harbor protocols, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Article
  3. Increased Interhemispheric Connectivity of a Distinct Type of Hippocampal Pyramidal Cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Cortico-Thalamo-Cortical Circuits of Mouse Forelimb S1 Are Organized Primarily as Recurrent Loops.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
    Article
  11. Article
  12. Article
  13. The State of the NIH BRAIN Initiative.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
    Article
  14. Article
  15. A Corticocortical Circuit Directly Links Retrosplenial Cortex to M2 in the Mouse.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Naoki YamawakiDepartment of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611.
Benjamin A SuterDepartment of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611.
Ian R WickershamMcGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.
Gordon M G ShepherdDepartment of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611.
Northwestern University · USMcGovern Institute for Brain Research · US

Funding

Synaptic Circuit Organization of Motor CortexR01NS061963 · NINDS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI SHEPHERD, GORDON M · 2008 to 2022
$5.4M
Synaptic circuit organization of motor cortexR37NS061963 · NINDS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI Gordon M Shepherd · 2024 to 2026
$1.6M
NINDS NIH HHS R01 NS061963NINDS NIH HHS R37 NS061963
6 · The paper itself

Abstract

A set of methods is described for channelrhodopsin-2 (ChR2)-based synaptic circuit analysis that combines photostimulation of virally transfected presynaptic neurons' axons with whole-cell electrophysiological recordings from retrogradely labeled postsynaptic neurons. The approach exploits the preserved photoexcitability of ChR2-expressing axons in brain slices and can be used to assess either local or long-range functional connections. Stereotaxic injections are used both to express ChR2 selectively in presynaptic axons of interest (using rabies virus [RV] or adeno-associated virus [AAV]) and to label two types of postsynaptic projection neurons of interest with fluorescent retrograde tracers. In brain slices, tracer-labeled postsynaptic neurons are targeted for whole-cell electrophysiological recordings, and synaptic connections are assessed by sampling voltage or current responses to light-emitting diode (LED) photostimulation of ChR2-expressing axons. The data are analyzed to estimate the relative amplitude of synaptic input and other connectivity parameters. Pharmacological and electrophysiological manipulations extend the versatility of the basic approach, allowing the dissection of monosynaptic versus disynaptic responses, excitatory versus inhibitory responses, and more. The method enables rapid, quantitative characterization of synaptic connectivity between defined pre- and postsynaptic classes of neurons.

Indexed as

Nerve NetAnimalsChannelrhodopsinsDependovirusElectrophysiologyGene ExpressionMiceNeuronsOptogeneticsRabies virusRecombinant ProteinsChannelrhodopsinsRecombinant Proteins

Identifiers

PMID27698240
PMCPMC5476926
OpenAlexW2529475745

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.