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Lookup NU author(s): Professor Michael SchmidORCiD
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Electrical microstimulation and more recently optogenetics are widely used to map large-scale brain circuits. However, the neuronal specificity achieved with both methods is not well understood. Here we compare cell-targeted optogenetics and electrical microstimulation in the macaque monkey brain to functionally map the koniocellular lateral geniculate nucleus (LGN) projection to primary visual cortex (V1). Selective activation of the LGN konio neurons with CamK-specific optogenetics caused selective electrical current inflow in the supra-granular layers of V1. Electrical microstimulation targeted at LGN konio layers revealed the same supra-granular V1 activation pattern as the one elicited by optogenetics. Taken together, these findings establish a selective koniocellular LGN influence on V1 supra-granular layers, and they indicate comparable capacities of both stimulation methods to isolate thalamo-cortical circuits in the primate brain.
Author(s): Klein C, Evrard HC, Shapcott KA, Haverkamp S, Logothetis NK, Schmid MC
Publication type: Article
Publication status: Published
Journal: Neuron
Year: 2016
Volume: 90
Issue: 1
Pages: 143-151
Print publication date: 06/04/2016
Online publication date: 24/03/2016
Acceptance date: 08/02/2016
ISSN (print): 0896-6273
ISSN (electronic): 1097-4199
Publisher: Cell Press
URL: http://dx.doi.org/10.1016/j.neuron.2016.02.036
DOI: 10.1016/j.neuron.2016.02.036
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