The indomethacin-induced gastric mucosal damage in rats. Effect of gastric acid, acid inhibition, capsaicin-type agents and prostacyclin [0.03%]
O M Abdel Salam,J Szolcsányi,G Mózsik
O M Abdel Salam
In pylorus-ligated rats subcutaneous (s.c.) pentagastrin (325.5 nmol/kg) or histamine (54.3 mumol/kg), but not the cholinergic agent bethanechol (7.6 or 15.2 mumol/kg), increased gastric mucosal injury by s.c. indomethacin (55.8 mumol/kg). ...
Odor discrimination of 'cAMP-' and 'IP3-increasing' odorants at high temperature and at high NaCl concentration in turtle olfactory system [0.03%]
M Kashiwayanagi,K Inamura,F Nagasawa et al.
M Kashiwayanagi et al.
The ability of the turtle olfactory system to discriminate between various cAMP- and IP3-increasing odorants at high temperature and at high NaCl concentration in the olfactory bulb was examined by the cross-adaptation technique. The degree...
Experience-induced plasticity of cutaneous maps in the primary somatosensory cortex of adult monkeys and rats [0.03%]
成人猴和大鼠初级躯体感觉皮层中皮肤感觉地图的经验依赖性可塑性
C Xerri,J O Coq,M M Merzenich et al.
C Xerri et al.
In a first study, the representations of skin surfaces of the hand in the primary somatosensory cortex, area 3b, were reconstructed in owl monkeys and squirrel monkeys trained to pick up food pellets from small, shallow wells, a task which ...
Does Hebbian synaptic plasticity explain learning-induced sensory plasticity in adult mammals? [0.03%]
海勃突触可塑性能否解释成人哺乳动物的学习诱导感觉系统的重塑？
J M Edeline
J M Edeline
Over the last decade, a large number of studies have demonstrated that sensory systems undergo functional reorganizations in adult mammals. In the auditory system, highly specific reorganizations were observed during learning situations in ...
Mechanisms underlying experience-dependent potentiation and depression of vibrissae responses in barrel cortex [0.03%]
与经验相关的触须反应在 barrels 大脑皮层中强化和消弱的机制研究
K Fox,S Glazewski,C M Chen et al.
K Fox et al.
Plasticity was studied in the barrel cortex of rats and mice. Vibrissae deprivation in adult and adolescent animals caused changes in the response properties of cortical neurons to stimulation of spared and deprived vibrissae. Plasticity in...
Dynamical computational properties of local cortical networks for visual and motor processing: a bayesian framework [0.03%]
基于贝叶斯框架的地方皮层视觉和运动处理网络的动态计算属性
E Koechlin,J L Anton,Y Burnod
E Koechlin
A major unsolved question concerns the interaction between the coding of information in the cortex and the collective neural operations (such as perceptual grouping, mental rotation) that can be performed on this information. A key property...
E Bienenstock
E Bienenstock
We propose to use a random-graph model of cortex as a tabula-rasa state, to be contrasted with various types of regular connectivity patterns. Key in our analysis is the notion of graph-theoretic dimensionality, closely linked to that of gr...
M Abeles,Y Prut
M Abeles
Recording the activity of several neurons in parallel in the frontal cortex of behaving monkeys reveals that firing times of neurons can maintain +/- 1 ms accuracy even after delays of over 400 ms. The accurate firing structures were associ...
A Aertsen,M Diesmann,M O Gewaltig
A Aertsen
'Synfire' activity has been proposed as a model for the experimentally observed accurate spike patterns in cortical activity. We investigated the structural and dynamical aspects of this theory. To quantify the degree of synchrony in neural...