Synaptic reverberation underlying mnemonic persistent activity
... stimulus by a unique persistent firing pattern. The emergence of persistent attractor states requires that excitatory connections in a recurrent network are sufficiently strong. It is only recently, beginning with the work by Amit and colleagues, that attractor network models have been implemented w ...
... stimulus by a unique persistent firing pattern. The emergence of persistent attractor states requires that excitatory connections in a recurrent network are sufficiently strong. It is only recently, beginning with the work by Amit and colleagues, that attractor network models have been implemented w ...
Motor Cortex
... Located in the precentral gyrus of each cerebral hemisphere. Contains large neurons (pyramidal cells) which project to SC neurons which eventually synapse on skeletal muscles ...
... Located in the precentral gyrus of each cerebral hemisphere. Contains large neurons (pyramidal cells) which project to SC neurons which eventually synapse on skeletal muscles ...
Substrate Stiffness and Adhesivity Influence Neuron Axonal Growth
... The nervous system is a complex organ system that coordinates all of the actions of an animal. The transmission of signals between different body parts by this organ system allows the body to function as a whole and interact with the external environment. It is clear then that the nervous system is ...
... The nervous system is a complex organ system that coordinates all of the actions of an animal. The transmission of signals between different body parts by this organ system allows the body to function as a whole and interact with the external environment. It is clear then that the nervous system is ...
Document
... to develop • Visual cortex develops slowly over the first 11 weeks • Growth and maturation of the nervous system occurs throughout childhood and reflects progressive myelination • Age brings some cognitive declines, but these are not significant in healthy individuals until they reach their 80s • Ex ...
... to develop • Visual cortex develops slowly over the first 11 weeks • Growth and maturation of the nervous system occurs throughout childhood and reflects progressive myelination • Age brings some cognitive declines, but these are not significant in healthy individuals until they reach their 80s • Ex ...
Enhanced cholinergic suppression of previously strengthened synapses enables the formation of
... input synapses which are the primary influence on postsynaptic activity during encoding. In contrast, associative memory models focus on storage of associations between patterns of activity imposed by external input. Thus, the input arrives along afferent input connections which have been previously m ...
... input synapses which are the primary influence on postsynaptic activity during encoding. In contrast, associative memory models focus on storage of associations between patterns of activity imposed by external input. Thus, the input arrives along afferent input connections which have been previously m ...
microcircuits in the striatum striatal cell types and their
... abundant of the striatal interneurons comprising 0.32% of the neurons in the rodent striatum (Kawaguchi et al., 1995; Rymar et al., 2004). The somata of these interneurons range from 20-50 µm in diameter. The neurons emit 2-4 large primary dendrites that give rise to higher order dendrites that span ...
... abundant of the striatal interneurons comprising 0.32% of the neurons in the rodent striatum (Kawaguchi et al., 1995; Rymar et al., 2004). The somata of these interneurons range from 20-50 µm in diameter. The neurons emit 2-4 large primary dendrites that give rise to higher order dendrites that span ...
Sequencing the connectome. - Cold Spring Harbor Laboratory
... light microscopy, may succeed in mapping circuit connectivity. GRASP (“GFP reconstituted across synaptic partners”) [14, 15] allows synaptic contacts to be resolved at the level of light microscopy. Brainbow [16] can be used to trace axons and dendrites over considerable distance. This technique rel ...
... light microscopy, may succeed in mapping circuit connectivity. GRASP (“GFP reconstituted across synaptic partners”) [14, 15] allows synaptic contacts to be resolved at the level of light microscopy. Brainbow [16] can be used to trace axons and dendrites over considerable distance. This technique rel ...
14.10 Insight 775 Gilbert
... case of contrast discrimination. Adini et al.7 assume that perceptual learning is mediated by an increase in contrast sensitivity. This, in turn, results from stimulus-evoked modifications to recurrent connections in the local network in the primary visual cortex. The model assumes that contrast dis ...
... case of contrast discrimination. Adini et al.7 assume that perceptual learning is mediated by an increase in contrast sensitivity. This, in turn, results from stimulus-evoked modifications to recurrent connections in the local network in the primary visual cortex. The model assumes that contrast dis ...
TESIS DOCTORAL Dynamics and Synchronization in Neuronal Models
... de Puebla, Mexico, we experimentally corroborate the numerical results demonstrating that stochastic resonance phenomenon is also presented in the motor system. In chapter 3 we model the propagation of signals through the spinal cord during a motor activity. Based on previous studies, we propose a n ...
... de Puebla, Mexico, we experimentally corroborate the numerical results demonstrating that stochastic resonance phenomenon is also presented in the motor system. In chapter 3 we model the propagation of signals through the spinal cord during a motor activity. Based on previous studies, we propose a n ...
On the role of primary motor cortex in arm movement
... Primary motor cortex (M1) plays a fundamental role in the control of voluntary arm movements, as evidenced by the profound deficits following M1 lesions. Precisely what that role is has been the subject of lasting debates. These debates are fueled by the numerous correlations found between the activ ...
... Primary motor cortex (M1) plays a fundamental role in the control of voluntary arm movements, as evidenced by the profound deficits following M1 lesions. Precisely what that role is has been the subject of lasting debates. These debates are fueled by the numerous correlations found between the activ ...
The Neural Basis of the Object Concept in Ambiguous and
... for the triangle in the left color layer is clearly distinguishable from the positive pattern of synchrony (white) for the rest of the stimulus, which is distributed over both color layers. In order to figure out in how far the eigenmodes are due to the illusory figure a control stimulus was tested. ...
... for the triangle in the left color layer is clearly distinguishable from the positive pattern of synchrony (white) for the rest of the stimulus, which is distributed over both color layers. In order to figure out in how far the eigenmodes are due to the illusory figure a control stimulus was tested. ...
Tsodyks-Banbury-2006
... Open questions: How do precise spike patterns emerge in the cortex? How can they be robust in the presence of random firing of surrounding neurons? (Synfire chains? – I don’t like it!) What is the relation between the spike patterns and the stimuli that they are coding for? How can the information ...
... Open questions: How do precise spike patterns emerge in the cortex? How can they be robust in the presence of random firing of surrounding neurons? (Synfire chains? – I don’t like it!) What is the relation between the spike patterns and the stimuli that they are coding for? How can the information ...
Genetic Analysis of the Drosophila Ellipsoid Body
... genetic mutations that disrupt the cc structure. Interestingly, only specific components of the behavior are disrupted in each case; for example, basic leg coordination of walking is normal, whereas speed, activity, and turning are affected (Strauss and Heisenberg, 1993; Strauss et al., 1992). In wi ...
... genetic mutations that disrupt the cc structure. Interestingly, only specific components of the behavior are disrupted in each case; for example, basic leg coordination of walking is normal, whereas speed, activity, and turning are affected (Strauss and Heisenberg, 1993; Strauss et al., 1992). In wi ...
Do distinct populations of dorsal root ganglion neurons account for
... the very same DRG, that according to our previous work mainly obtain afferent input from the hindlimb vasculature (19). We used different proton concentrations in the culture medium as stimulus for TRPV1 since they are easily applied in cultured neurons and relevant with respect to inflammatory proc ...
... the very same DRG, that according to our previous work mainly obtain afferent input from the hindlimb vasculature (19). We used different proton concentrations in the culture medium as stimulus for TRPV1 since they are easily applied in cultured neurons and relevant with respect to inflammatory proc ...
Read Here
... studies probing raphe obscurus neurons based on anatomical location have implicated these neurons in respiratory control (Peever et al., 2001; Dias et al., 2008; Nuding et al., 2009; Depuy et al., 2011). For example, injection of Cre-dependent virus targeting channelrhodopsin2-mCherry to caudal raph ...
... studies probing raphe obscurus neurons based on anatomical location have implicated these neurons in respiratory control (Peever et al., 2001; Dias et al., 2008; Nuding et al., 2009; Depuy et al., 2011). For example, injection of Cre-dependent virus targeting channelrhodopsin2-mCherry to caudal raph ...
Understanding trigeminal pain pathways: lessons from teeth
... orofacial pain TMJ pain: intra-capsular injection of Freund’s adjuvant (Thut et al. 2007); single molar tooth crown that caused occlusal interference (Cao et al. 2009). Obstructive parotitis: Freund’s adjuvant injected along the parotid duct and papilla sealed (Ogawa et al. 2003). Neuropathic pain: ...
... orofacial pain TMJ pain: intra-capsular injection of Freund’s adjuvant (Thut et al. 2007); single molar tooth crown that caused occlusal interference (Cao et al. 2009). Obstructive parotitis: Freund’s adjuvant injected along the parotid duct and papilla sealed (Ogawa et al. 2003). Neuropathic pain: ...
Central Nervous System - Spinal Cord, Spinal
... Spinal Cord - Functions Spinal cord has the following functions: 1. Receive and send impulses: receives impulses from receptors and sends impulses to the effectors. 2. Communication with the brain: has bundles/cables of nerve fibers (tracts) that take sensory impulses up to the brain or motor impul ...
... Spinal Cord - Functions Spinal cord has the following functions: 1. Receive and send impulses: receives impulses from receptors and sends impulses to the effectors. 2. Communication with the brain: has bundles/cables of nerve fibers (tracts) that take sensory impulses up to the brain or motor impul ...
Biomechanics Models Motor Cortex Using Spinal Cord and Limb
... motor cortex (M1), which plays a major role in voluntary limb movement. Projections from M1 influence muscles through direct synapses onto motorneurons and indirectly through spinal inter-neurons (Kandel et al. 2001). It is now well understood that M1 is highly heterogeneous (Alexander and Crutcher ...
... motor cortex (M1), which plays a major role in voluntary limb movement. Projections from M1 influence muscles through direct synapses onto motorneurons and indirectly through spinal inter-neurons (Kandel et al. 2001). It is now well understood that M1 is highly heterogeneous (Alexander and Crutcher ...
Nervous System
... Neurotransmitters 100 types identified in the nervous system that are released by different neurons – some release more than one type Most synthesized in _________ and stored in ___________ After release some are decomposed by enzymes in the synaptic cleft while others can either diffuse to nearby ...
... Neurotransmitters 100 types identified in the nervous system that are released by different neurons – some release more than one type Most synthesized in _________ and stored in ___________ After release some are decomposed by enzymes in the synaptic cleft while others can either diffuse to nearby ...