Circuit analysis of experience-dependent plasticity in the developing rat barrel cortex

Shepherd, G. M., Pologruto, T. A., Svoboda, K. (April 2003) Circuit analysis of experience-dependent plasticity in the developing rat barrel cortex. Neuron, 38 (2). pp. 277-89. ISSN 0896-6273 (Print)

URL: http://www.ncbi.nlm.nih.gov/pubmed/12718861
DOI: 10.1016/S0896-6273(03)00152-1

Abstract

Sensory deprivation during a critical period reduces spine motility and disrupts receptive field structure of layer 2/3 neurons in rat barrel cortex. To determine the locus of plasticity, we used laser scanning photostimulation, allowing us to rapidly map intracortical synaptic connectivity in brain slices. Layer 2/3 neurons differed in their spatial distributions of presynaptic partners: neurons directly above barrels received, on average, significantly more layer 4 input than those above the septa separating barrels. Complementary connectivity was found in deprived cortex: neurons above septa were now strongly coupled to septal regions, while connectivity between barrel regions and layer 2/3 was reduced. These results reveal competitive interactions between barrel and septal circuits in the establishment of precise intracortical circuits.

Item Type: Paper
Uncontrolled Keywords: Afferent Pathways/physiology Animals Brain Mapping Glutamates/pharmacology/radiation effects In Vitro Lasers Nerve Net/cytology/ physiology Neuronal Plasticity/drug effects/ physiology Neurons/cytology/drug effects/ physiology Patch-Clamp Techniques Photic Stimulation/instrumentation/methods Rats Rats, Wistar Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Sensory Deprivation/physiology Somatosensory Cortex/ anatomy & histology/drug effects/ physiology Ultraviolet Rays Vibrissae/innervation/physiology
Subjects: organs, tissues, organelles, cell types and functions > tissues types and functions > barrel cortex
organs, tissues, organelles, cell types and functions > cell types and functions > cell types
organs, tissues, organelles, cell types and functions > cell types and functions > cell types
organs, tissues, organelles, cell types and functions > cell types and functions > cell types

organs, tissues, organelles, cell types and functions > cell types and functions > cell functions > neural plasticity
organs, tissues, organelles, cell types and functions > cell types and functions > cell types > neurons > neuronal circuits
organs, tissues, organelles, cell types and functions > cell types and functions > cell types > neurons > neuronal circuits
organs, tissues, organelles, cell types and functions > cell types and functions > cell types > neurons > neuronal circuits

organs, tissues, organelles, cell types and functions > tissues types and functions
CSHL Authors:
Communities: CSHL labs > Svoboda lab
Depositing User: Matt Covey
Date: 24 April 2003
Date Deposited: 26 Jun 2013 19:38
Last Modified: 26 Jun 2013 19:38
Related URLs:
URI: http://repository.cshl.edu/id/eprint/27919

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