Rajeevan T. Narayanan
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View article: Thalamus enables active dendritic coupling of inputs arriving at different cortical layers
Thalamus enables active dendritic coupling of inputs arriving at different cortical layers Open
Dendritic calcium action potentials (APs) enable the main output neurons of the cerebral cortex – pyramidal tract neurons (PTs) – to associate inputs that arrive at different cortical layers. How synaptic inputs evoke calcium APs during in…
View article: Thalamus drives active dendritic computations in cortex
Thalamus drives active dendritic computations in cortex Open
Perception is linked to a calcium-dependent dendritic spiking mechanism that enables the major output cells of the cerebral cortex – layer 5 pyramidal tract neurons – to combine inputs from different information streams. Which circuits act…
View article: Thalamus drives two complementary input strata of the neocortex in parallel
Thalamus drives two complementary input strata of the neocortex in parallel Open
Sensory information enters the neocortex via thalamocortical axons that define the major ‘input’ layer 4. The same thalamocortical axons, however, additionally innervate the deep ‘output’ layers 5/6. How such bistratification impacts corti…
View article: Morphological characterization of HVC projection neurons in the zebra finch (<i>Taeniopygia guttata</i>)
Morphological characterization of HVC projection neurons in the zebra finch (<i>Taeniopygia guttata</i>) Open
Singing behavior in the adult male zebra finch is dependent upon the activity of a cortical region known as HVC (proper name). The vast majority of HVC projection neurons send primary axons to either the downstream premotor nucleus RA (rob…
View article: Cell Type-Specific Structural Organization of the Six Layers in Rat Barrel Cortex
Cell Type-Specific Structural Organization of the Six Layers in Rat Barrel Cortex Open
The cytoarchitectonic subdivision of the neocortex into six layers is often used to describe the organization of the cortical circuitry, sensory-evoked signal flow or cortical functions. However, each layer comprises neuronal cell types th…
View article: EM connectomics reveals axonal target variation in a sequence-generating network
EM connectomics reveals axonal target variation in a sequence-generating network Open
The sequential activation of neurons has been observed in various areas of the brain, but in no case is the underlying network structure well understood. Here we examined the circuit anatomy of zebra finch HVC, a cortical region that gener…
View article: Author response: EM connectomics reveals axonal target variation in a sequence-generating network
Author response: EM connectomics reveals axonal target variation in a sequence-generating network Open
Article Figures and data Abstract eLife digest Introduction Results Discussion Materials and methods References Decision letter Author response Article and author information Metrics Abstract The sequential activation of neurons has been o…