Critical period for the whisker-barrel system
نویسندگان
چکیده
منابع مشابه
The interesting whisker/barrel system
Introduction In the late 20th century, Woolsey and Van der Loos discovered a specific projection map in the rodent somatosensory cortex corresponding to the contralateral face whiskers, designated barrel. Because rodents are nocturnal animals, their whiskers serve to recognize the external world, similar to our eyes and fingers. Each barrel is associated with an individual whisker on the snout,...
متن کاملResponse Transformations in the Whisker/Barrel System
I. Previous studies have demonstrated marked differences in the relative sizes of ON and OFF responses of neurons in the whisker/ barrel system. In particular, OFF responses are unexpectedly large in thalamic neurons. Extracellular unit recordings were used to examine whether varying the time between stimulus onset and offset differently affects OFF responses of neurons in the trigeminal gangli...
متن کاملCortical columnar processing in the rat whisker-to-barrel system.
Controlled whisker stimulation and single-unit recordings were used to elucidate response transformations that occur during the processing of tactile information from ventral posterior medial thalamus (VPM) through cortical columns in the rat whisker/barrel cortex. Whiskers were either deflected alone, using punctate ramp-and-hold stimuli, or in combination with a random noise vibration applied...
متن کاملThe Matrix: a new tool for probing the whisker-to-barrel system with natural stimuli.
The whisker to barrel system in rodents has become one of the major models for the study of sensory processing. Several tens of whiskers (or vibrissae) are distributed in a regular manner on both sides of the snout. Many tactile discrimination tasks using this system need multiple contacts with more than one whisker to be solved. With the aim of mimicking those multi-whisker stimuli during elec...
متن کاملBarrel cortex and whisker-mediated behaviors.
Neural networks of the rodent barrel cortex are particularly tractable for developing a quantitative understanding of response transformations in a cortical column. A column in barrel cortex consists of approximately 10 compartments. Two thalamic input pathways, a sensory lemniscal one and sensorimotor paralemniscal one, are transformed to approximately 7 population outputs, each with distinct ...
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ژورنال
عنوان ژورنال: Experimental Neurology
سال: 2010
ISSN: 0014-4886
DOI: 10.1016/j.expneurol.2009.12.025