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    Synaptic changes in layer 2/3 underlying map plasticity of developing barrel cortex (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-01
    Description: The functional and anatomical rearrangements of cortical sensory maps accompanying changes in experience are not well understood. We examined in vivo and in vitro how the sensory map and underlying synaptic connectivity of the developing rat barrel cortex are altered when the sensory input to the cortex is partially deprived. In the nondeprived cortex, both the sensory responses and synaptic connectivity between columns were strengthened through an increase in the synaptic connection probability between L2/3 pyramids in adjacent columns. This was accompanied by a selective growth of L2/3pyramid axonal arbors between spared columns. In contrast, deprived and nondeprived cortical columns became weakly connected in their L2/3 pyramid connections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Petersen, Carl C H -- Brecht, Michael -- Hahn, Thomas T G -- Sakmann, Bert -- New York, N.Y. -- Science. 2004 Apr 30;304(5671):739-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Physiology, Max-Planck-Institute for Medical Research, Jahnstrasse 29, Heidelberg D-69120, Germany. carl.petersen@epfl.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15118164" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Brain Mapping ; Electric Stimulation ; Excitatory Postsynaptic Potentials ; Image Processing, Computer-Assisted ; In Vitro Techniques ; Nerve Net/physiology ; *Neuronal Plasticity ; Patch-Clamp Techniques ; Pyramidal Cells/*physiology/ultrastructure ; Rats ; Rats, Wistar ; Somatosensory Cortex/cytology/growth & development/*physiology ; Synapses/*physiology ; Synaptic Transmission ; Vibrissae/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Motor control by sensory cortex (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-11-27
    Description: Classical studies of mammalian movement control define a prominent role for the primary motor cortex. Investigating the mouse whisker system, we found an additional and equally direct pathway for cortical motor control driven by the primary somatosensory cortex. Whereas activity in primary motor cortex directly evokes exploratory whisker protraction, primary somatosensory cortex directly drives whisker retraction, providing a rapid negative feedback signal for sensorimotor integration. Motor control by sensory cortex suggests the need to reevaluate the functional organization of cortical maps.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matyas, Ferenc -- Sreenivasan, Varun -- Marbach, Fred -- Wacongne, Catherine -- Barsy, Boglarka -- Mateo, Celine -- Aronoff, Rachel -- Petersen, Carl C H -- New York, N.Y. -- Science. 2010 Nov 26;330(6008):1240-3. doi: 10.1126/science.1195797.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Sensory Processing, Brain Mind Institute, Faculty of Life Sciences, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21109671" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Mapping ; Electric Stimulation ; Feedback, Sensory ; Mice ; Mice, Inbred C57BL ; *Motor Activity ; Motor Cortex/physiology ; Neural Pathways/physiology ; Signal Transduction ; Somatosensory Cortex/*physiology ; Vibrissae/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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