A Physiologically Plausible Model of Action Selection
... (9) SNr and EP maintain a tonic inhibitory output over their target structures in thalamus and brainstem. Selection of an action is then encoded by suppression of the appropriate neural population (output “channel”) in SNr/EP, resulting in selective disinhibition of basal ganglia output targets (Che ...
... (9) SNr and EP maintain a tonic inhibitory output over their target structures in thalamus and brainstem. Selection of an action is then encoded by suppression of the appropriate neural population (output “channel”) in SNr/EP, resulting in selective disinhibition of basal ganglia output targets (Che ...
The neuronal structure of the medial geniculate body in the pig
... methods. Four types of neurons were described in the medial geniculate body (MGB) of the pig: 1. Multipolar neurons (perikarya 30–45 µm) with rounded, oval or quadrangular perikarya from which arise 4–7 dendritic trunks. The dendrites divide dichotomically twice, may send out collaterals and give of ...
... methods. Four types of neurons were described in the medial geniculate body (MGB) of the pig: 1. Multipolar neurons (perikarya 30–45 µm) with rounded, oval or quadrangular perikarya from which arise 4–7 dendritic trunks. The dendrites divide dichotomically twice, may send out collaterals and give of ...
neuronal types and their specification dynamics in
... ”fight-or-flight” response, which prepares the body to either face the stressor or flee from it. Once the stressor is removed, the parasympathetic nervous system restores the homeostasis by bringing the body to a ”rest-and-digest” state. It is believed that autonomic neurons respond in an “all-or-no ...
... ”fight-or-flight” response, which prepares the body to either face the stressor or flee from it. Once the stressor is removed, the parasympathetic nervous system restores the homeostasis by bringing the body to a ”rest-and-digest” state. It is believed that autonomic neurons respond in an “all-or-no ...
The Molecular Basis of Odor Coding in the Drosophila Antenna
... tory responses to others. For example, we have mapped Or59b to ab2A, a neuron that was previously shown to generate inhibitory responses to linalool and excitatory responses to ethyl acetate (de Bruyne et al., 2001; Figure 4D). When expressed in ⌬ab3A, Or59b confers inhibition by linalool and excita ...
... tory responses to others. For example, we have mapped Or59b to ab2A, a neuron that was previously shown to generate inhibitory responses to linalool and excitatory responses to ethyl acetate (de Bruyne et al., 2001; Figure 4D). When expressed in ⌬ab3A, Or59b confers inhibition by linalool and excita ...
Experience-Dependent Sharpening of Visual Shape Selectivity in
... novel objects and showed orientation-dependent responses to objects during image-plane rotation. Kobatake and Tanaka (1998) conducted ITC recordings from anesthetized monkeys and found sharpened tuning for trained compared with novel stimuli. Booth and Rolls (1998) found ITC responses to familiar ob ...
... novel objects and showed orientation-dependent responses to objects during image-plane rotation. Kobatake and Tanaka (1998) conducted ITC recordings from anesthetized monkeys and found sharpened tuning for trained compared with novel stimuli. Booth and Rolls (1998) found ITC responses to familiar ob ...
The Neural Architecture Underlying Habit Learning: An Evolving
... When I began to study the brain, as a student in the late 1960's, there was enormous excitement about work on the neocortex. Surely this was the organ of thought and creativity, the organ underlying our ability to see and hear and feel, our ability to act deliberatively, to do mathematics. And, buil ...
... When I began to study the brain, as a student in the late 1960's, there was enormous excitement about work on the neocortex. Surely this was the organ of thought and creativity, the organ underlying our ability to see and hear and feel, our ability to act deliberatively, to do mathematics. And, buil ...
Synaptic and extrasynaptic traces of long-term memory
... through the steps of storage and retrieval, and the conclusion reached is that the ID molecules, by carrying a sufficient amount of information (entropy), can effectively control the recreation of complex multineuronal patterns. In illustrations, it is described how ID molecules can be made to reviv ...
... through the steps of storage and retrieval, and the conclusion reached is that the ID molecules, by carrying a sufficient amount of information (entropy), can effectively control the recreation of complex multineuronal patterns. In illustrations, it is described how ID molecules can be made to reviv ...
Institute of Psychology C.N.R.
... the case, for example, that the network architecture or the initial weights or the learning parameters are genetically inherited while to the environment is assigned the role of changing the connection weights of the neural network using the backpropagation procedure. In the simulations to be presen ...
... the case, for example, that the network architecture or the initial weights or the learning parameters are genetically inherited while to the environment is assigned the role of changing the connection weights of the neural network using the backpropagation procedure. In the simulations to be presen ...
Different Subthreshold Mechanisms Underlie Song Selectivity in
... this idea, in vivo intracellular recordings from X-projecting neurons reveal that they have song-selective auditory responses (Lewicki, 1996). Furthermore, certain X-projecting neurons display BOSevoked hyperpolarizations (Lewicki, 1996), perhaps driven by HVc interneurons, that might refine these r ...
... this idea, in vivo intracellular recordings from X-projecting neurons reveal that they have song-selective auditory responses (Lewicki, 1996). Furthermore, certain X-projecting neurons display BOSevoked hyperpolarizations (Lewicki, 1996), perhaps driven by HVc interneurons, that might refine these r ...
ling411-16 - Rice University
... maxicolumn are distinct because of nonshared additional features • Shared within the functional column • Not shared with the rest of the maxicolumn Mountcastle: “The neurons of a [maxi]column have certain sets of static and dynamic properties in common, upon which others that may differ are ...
... maxicolumn are distinct because of nonshared additional features • Shared within the functional column • Not shared with the rest of the maxicolumn Mountcastle: “The neurons of a [maxi]column have certain sets of static and dynamic properties in common, upon which others that may differ are ...
Normalization as a canonical neural computation
... Here, the Ik are activities of afferent neurons, and the weights wjk specify the summation field of neuron j. A number of variations of the normalization equation have been applied to model different systems: Different inputs Dk can be assigned different weights αjk in the normalization pool. These ...
... Here, the Ik are activities of afferent neurons, and the weights wjk specify the summation field of neuron j. A number of variations of the normalization equation have been applied to model different systems: Different inputs Dk can be assigned different weights αjk in the normalization pool. These ...
a few sensory concepts, 100416
... The sensory receptor transduces the energy in the stimulus, such as a mechanical vibration, into a graded potential. ...
... The sensory receptor transduces the energy in the stimulus, such as a mechanical vibration, into a graded potential. ...
Assisted morphogenesis: glial control of dendrite
... domain protein made by the thecogen and scolopale support cells [36]. In the absence of NompA, sensory neuron dendrite endings fail to form connections to the dendritic cap, and as a result, animals exhibit mechanosensory defects [36]. The studies reviewed here suggest that sensory organ glia may pr ...
... domain protein made by the thecogen and scolopale support cells [36]. In the absence of NompA, sensory neuron dendrite endings fail to form connections to the dendritic cap, and as a result, animals exhibit mechanosensory defects [36]. The studies reviewed here suggest that sensory organ glia may pr ...
PDF file
... August 3, 2011 during the International Joint Conference on Neural Networks, Michael Jordan correctly stated that prior neural networks do not abstract well and symbolic models had been better than prior neural networks in terms of abstraction. With regard to temporal information processing, Buonoma ...
... August 3, 2011 during the International Joint Conference on Neural Networks, Michael Jordan correctly stated that prior neural networks do not abstract well and symbolic models had been better than prior neural networks in terms of abstraction. With regard to temporal information processing, Buonoma ...
Post-Operative Time Effects after Sciatic Nerve Crush on the
... numerical density of alpha motoneurons. The present results, are based on using method which provides absolute estimates of cell number rather than ratios [15, 19, 20]. This method has been rapidly gaining acceptance, because not only it is the most efficient quantification method, but also unbiased ...
... numerical density of alpha motoneurons. The present results, are based on using method which provides absolute estimates of cell number rather than ratios [15, 19, 20]. This method has been rapidly gaining acceptance, because not only it is the most efficient quantification method, but also unbiased ...
Saccades and multisaccadic gaze shifts are gated by different
... could be set in any direction and the velocity could be varied between 10 and 100 deg·s–1. However, in the experiments reported here we used only four axes (horizontal, vertical, +45 deg and –45 deg) and one speed (60 deg·s–1) of target motion. To evoke tracking eye movements and to evaluate visual ...
... could be set in any direction and the velocity could be varied between 10 and 100 deg·s–1. However, in the experiments reported here we used only four axes (horizontal, vertical, +45 deg and –45 deg) and one speed (60 deg·s–1) of target motion. To evoke tracking eye movements and to evaluate visual ...
(jns-object). - The Computational Neurobiology Laboratory
... tuning in a two-dimensional situation and pointed out that the argument could be generalized to include other muscle variables. This interesting example illustrates how cosine tuning property might emerge from some simple assumptions. The assumption in Equation 1 is more general and the formalism is ...
... tuning in a two-dimensional situation and pointed out that the argument could be generalized to include other muscle variables. This interesting example illustrates how cosine tuning property might emerge from some simple assumptions. The assumption in Equation 1 is more general and the formalism is ...
Dorsal spinal cord stimulation obtunds the capacity of intrathoracic
... This ganglion was explored with the electrode tip placed from its ventral surface to its underlying regions such that the activity generated by neurons in various loci within that ganglion could be identified. Action potentials generated by the somata and/or dendrites of individual neurons can be re ...
... This ganglion was explored with the electrode tip placed from its ventral surface to its underlying regions such that the activity generated by neurons in various loci within that ganglion could be identified. Action potentials generated by the somata and/or dendrites of individual neurons can be re ...
Normalization as a canonical neural computation
... different brain regions or different species may implement it with different available components. Two established examples of canonical neural computations are exponentiation and linear filtering. Exponentiation, a form of thresholding, operates at the level of neurons and of networks3 — for exampl ...
... different brain regions or different species may implement it with different available components. Two established examples of canonical neural computations are exponentiation and linear filtering. Exponentiation, a form of thresholding, operates at the level of neurons and of networks3 — for exampl ...
The resting membrane potential - Lectures For UG-5
... • Dendrites and cell body are specialized to receive information and produce graded potentials: In most neurons, the plasma membrane of the dendrites and cell body contain protein receptors that bind chemical messengers/neurotransmitters from other neurons Graded potentials are produced in response ...
... • Dendrites and cell body are specialized to receive information and produce graded potentials: In most neurons, the plasma membrane of the dendrites and cell body contain protein receptors that bind chemical messengers/neurotransmitters from other neurons Graded potentials are produced in response ...
introduction - HAL
... cycles at 95°C for 15 s, and 60 °C for 1 min. For standard preparation amplicons were purified from ...
... cycles at 95°C for 15 s, and 60 °C for 1 min. For standard preparation amplicons were purified from ...