Neuronal Replacement and Reconstruction of Damaged Circuitries
... exhibit a more protracted neurogenesis, such as cerebral cortex and hippocampus, can be grafted with goodresults from a wider range of donor ages (up to days 20-22of gestation), althoughthe final size, the intrinsic architecture, and the survival rate of the grafts can be quite different in grafts t ...
... exhibit a more protracted neurogenesis, such as cerebral cortex and hippocampus, can be grafted with goodresults from a wider range of donor ages (up to days 20-22of gestation), althoughthe final size, the intrinsic architecture, and the survival rate of the grafts can be quite different in grafts t ...
NEOCORTEX
... midal neurons a¡e found in all cortical layers except layer 1. Their most prominent feature is an apical dendrite that may extend through all the layers of the cortex above the soma. Pyramidal cells are the major output neurons of the neocortex. They participate both in connections between the diffe ...
... midal neurons a¡e found in all cortical layers except layer 1. Their most prominent feature is an apical dendrite that may extend through all the layers of the cortex above the soma. Pyramidal cells are the major output neurons of the neocortex. They participate both in connections between the diffe ...
Visuomotor development
... 1987; Cliff, 1990). Research carried out on understanding simpler animals behavior indicated that all sensorimotor systems interact with their immediate surroundings by forming a closed loop with the environment (Cliff, 1995). It was suggested that: • Sensorimotor pathways generating adaptive behavi ...
... 1987; Cliff, 1990). Research carried out on understanding simpler animals behavior indicated that all sensorimotor systems interact with their immediate surroundings by forming a closed loop with the environment (Cliff, 1995). It was suggested that: • Sensorimotor pathways generating adaptive behavi ...
Relative Contributions of Specific Activity Histories and
... side" of synaptic plasticity: that is, the implicit supposition that synapses, when not driven to change their characteristics, will retain these over time. This assumption would seem to be an essential complement of the synaptic plasticity concept; without it, spontaneous changes occurring independ ...
... side" of synaptic plasticity: that is, the implicit supposition that synapses, when not driven to change their characteristics, will retain these over time. This assumption would seem to be an essential complement of the synaptic plasticity concept; without it, spontaneous changes occurring independ ...
Negative BOLD in Sensory Cortices During
... Abstract People tend to close their eyes when trying to retrieve an event or a visual image from memory. However the brain mechanisms behind this phenomenon remain poorly understood. Recently, we showed that during visual mental imagery, auditory areas show a much more robust deactivation than durin ...
... Abstract People tend to close their eyes when trying to retrieve an event or a visual image from memory. However the brain mechanisms behind this phenomenon remain poorly understood. Recently, we showed that during visual mental imagery, auditory areas show a much more robust deactivation than durin ...
Chronic Administration of Statins Alters Multiple Gene Expression
... glomerular mesangial cells (Nagasawa et al., 2002). Of the 15 genes whose expression was changed by each of the three statins, only Fin15 listed under cell growth showed a decrease in gene expression. Fin15 belongs to a group of genes that are stimulated by fibroblast growth factors. Table 2 contain ...
... glomerular mesangial cells (Nagasawa et al., 2002). Of the 15 genes whose expression was changed by each of the three statins, only Fin15 listed under cell growth showed a decrease in gene expression. Fin15 belongs to a group of genes that are stimulated by fibroblast growth factors. Table 2 contain ...
1From neuronal activity to scalp potential fields - Assets
... Figure 1.2. Closely folded brain structures only generate “closed fields” which cancel within a few millimeters due to nearby sources with random or opposite orientations. Although some structures like the cerebellum were historically considered to generate only closed fields and no EEG, recent MEG ...
... Figure 1.2. Closely folded brain structures only generate “closed fields” which cancel within a few millimeters due to nearby sources with random or opposite orientations. Although some structures like the cerebellum were historically considered to generate only closed fields and no EEG, recent MEG ...
Spinal Sensorimotor System: An Overview
... network organization of the system. Think of Part I as a sort of “systems level over-view” of the topic. In it I will try to identify some key issues for EC-based network design. Spinal Cord Organization It’s probably no surprise that we should begin with the spinal cord itself, since this structure ...
... network organization of the system. Think of Part I as a sort of “systems level over-view” of the topic. In it I will try to identify some key issues for EC-based network design. Spinal Cord Organization It’s probably no surprise that we should begin with the spinal cord itself, since this structure ...
Multiple Representation in Primate SI
... 3b leave Area 1 unresponsive, consistent with anatomy studies that show that Area 1 receives the bulk of its input from Area 3b. These findings suggest that direct thalamic inputs to Area 1 play either a weak or a modulatory role in cutaneous information processing (Garraghty et al., 1990). In compa ...
... 3b leave Area 1 unresponsive, consistent with anatomy studies that show that Area 1 receives the bulk of its input from Area 3b. These findings suggest that direct thalamic inputs to Area 1 play either a weak or a modulatory role in cutaneous information processing (Garraghty et al., 1990). In compa ...
Down - 서울대 Biointelligence lab
... which is often recorded as the effect of inhibitory synapses on the cell body. (B) The effect of simultaneously activated voltage-gated excitatory synapses that are in close physical proximity to each other (synaptic clusters) can be larger than the sum of the effect of each individual synapse. Exam ...
... which is often recorded as the effect of inhibitory synapses on the cell body. (B) The effect of simultaneously activated voltage-gated excitatory synapses that are in close physical proximity to each other (synaptic clusters) can be larger than the sum of the effect of each individual synapse. Exam ...
Concept cells: the building blocks of declarative
... to Mother Teresa27. The fact that neighbouring neurons fire to seemingly unrelated concepts, like Halle Berry and Mother Teresa, is indeed common39,40 and supports the idea of a non-topographic organization of the MTL. These and many other examples27,40 suggest that MTL neurons encode an abstract re ...
... to Mother Teresa27. The fact that neighbouring neurons fire to seemingly unrelated concepts, like Halle Berry and Mother Teresa, is indeed common39,40 and supports the idea of a non-topographic organization of the MTL. These and many other examples27,40 suggest that MTL neurons encode an abstract re ...
Vertebrate brains and evolutionary connectomics: on the origins of
... to individual cells and axons to synapses, with particular emphasis on the cell types, transmitters, receptors and the multineuronal microcircuitry of the brain. Examples of such microcircuitry may include circuits within the retina, spinal cord, long ascending paths (e.g. from spinal cord to cerebe ...
... to individual cells and axons to synapses, with particular emphasis on the cell types, transmitters, receptors and the multineuronal microcircuitry of the brain. Examples of such microcircuitry may include circuits within the retina, spinal cord, long ascending paths (e.g. from spinal cord to cerebe ...
Plasticity of Sensory and Motor Maps in Adult Mammals
... Further evidence that the reactivation of cortex is limited by the size of the deprived zone is seen after cross repair and regeneration of nerves to the hand (Wall et al 1986, Figure 1H). In this procedure, both the ulnar and the median nerves are cut, the proximal end of the ulnar nerve is crossed ...
... Further evidence that the reactivation of cortex is limited by the size of the deprived zone is seen after cross repair and regeneration of nerves to the hand (Wall et al 1986, Figure 1H). In this procedure, both the ulnar and the median nerves are cut, the proximal end of the ulnar nerve is crossed ...
Discussion and future directions
... the difference between their preferred attributes. This sort of experimental data and computational work, suggest the manifestation in the brain of a general principle for horizontal connections organization. It is generally believed that this is reflected in the correlation between the strength of ...
... the difference between their preferred attributes. This sort of experimental data and computational work, suggest the manifestation in the brain of a general principle for horizontal connections organization. It is generally believed that this is reflected in the correlation between the strength of ...
Hierarchical somatosensory processing
... [SO]. On the other hand, neural activity in SII of marmoset monkey and cat is not completely abolished by reversible inactivation of SI [.51,X], leading to the suggestion that the strict serial processing scheme is in need of revision. ...
... [SO]. On the other hand, neural activity in SII of marmoset monkey and cat is not completely abolished by reversible inactivation of SI [.51,X], leading to the suggestion that the strict serial processing scheme is in need of revision. ...
Focal local field potential (LFP) signature of the single
... to investigate neural network activity. To probe monosynaptic thalamic activation of cortical postsynaptic target cells, so called spike-trigger-averaged LFP (stLFP) signatures have been measured. In these experiments the cortical LFP is measured by means of multielectrodes covering several cortical ...
... to investigate neural network activity. To probe monosynaptic thalamic activation of cortical postsynaptic target cells, so called spike-trigger-averaged LFP (stLFP) signatures have been measured. In these experiments the cortical LFP is measured by means of multielectrodes covering several cortical ...
View PDF - CiteSeerX
... integrated stimulus that behavior is “activated” and 2) “direct” this state of activation toward a specific behavioral response. While we have made substantial progress toward identifying the neural circuits and cellular foundations responsible for activating behavior, we have been only marginally e ...
... integrated stimulus that behavior is “activated” and 2) “direct” this state of activation toward a specific behavioral response. While we have made substantial progress toward identifying the neural circuits and cellular foundations responsible for activating behavior, we have been only marginally e ...
Focal local field potential (LFP) signature of the single
... to investigate neural network activity. To probe monosynaptic thalamic activation of cortical postsynaptic target cells, so called spike-trigger-averaged LFP (stLFP) signatures have been measured. In these experiments the cortical LFP is measured by means of multielectrodes covering several cortical ...
... to investigate neural network activity. To probe monosynaptic thalamic activation of cortical postsynaptic target cells, so called spike-trigger-averaged LFP (stLFP) signatures have been measured. In these experiments the cortical LFP is measured by means of multielectrodes covering several cortical ...
The Neural Basis of Addiction: A Pathology of Motivation and Choice
... integrated stimulus that behavior is “activated” and 2) “direct” this state of activation toward a specific behavioral response. While we have made substantial progress toward identifying the neural circuits and cellular foundations responsible for activating behavior, we have been only marginally e ...
... integrated stimulus that behavior is “activated” and 2) “direct” this state of activation toward a specific behavioral response. While we have made substantial progress toward identifying the neural circuits and cellular foundations responsible for activating behavior, we have been only marginally e ...
Neurosteroids: Expression of Steroidogenic Enzymes and
... (Mensah-Nyagan et al., 1994). In situ hybridization studies have revealed that the mRNAs encoding for 3bHSD in the rat brain are localized in the olfactive bulb, nucleus accumbens, hippocampus, area of medulla bordering the fourth ventricle as well as in the thalamus, hypothalamus, and cerebellum (D ...
... (Mensah-Nyagan et al., 1994). In situ hybridization studies have revealed that the mRNAs encoding for 3bHSD in the rat brain are localized in the olfactive bulb, nucleus accumbens, hippocampus, area of medulla bordering the fourth ventricle as well as in the thalamus, hypothalamus, and cerebellum (D ...
sample - Testbankonline.Com
... This is one of the main points Crew and Nixon make: “Interesting, genetics and specific environmental factors play an important role in regulating neurogenesis, and these same environmental factors … are key factors in the risk of developing alcoholism.” Discussion Points: ...
... This is one of the main points Crew and Nixon make: “Interesting, genetics and specific environmental factors play an important role in regulating neurogenesis, and these same environmental factors … are key factors in the risk of developing alcoholism.” Discussion Points: ...
Self-Organization and Functional Role of Lateral Connections and
... selectivity develop together, and perhaps because of the interactions between these two domains, does not produce a clear columnar organization of spatial frequency selectivity. Although the above models replicate the self-organization of a erent structures quite well, they are based on the simpli c ...
... selectivity develop together, and perhaps because of the interactions between these two domains, does not produce a clear columnar organization of spatial frequency selectivity. Although the above models replicate the self-organization of a erent structures quite well, they are based on the simpli c ...
Horizontal Synaptic Connections in Monkey Prefrontal Cortex: An In
... employ low stimulation intensities, restricting the spread of the stimulation current and thus improving the spatial resolution of the stimulation procedure. Horizontal connections were activated by low-intensity stimulation applied at multiple sites in the superficial layers via a multielectrode st ...
... employ low stimulation intensities, restricting the spread of the stimulation current and thus improving the spatial resolution of the stimulation procedure. Horizontal connections were activated by low-intensity stimulation applied at multiple sites in the superficial layers via a multielectrode st ...
Plastic Effect of Tetanic Stimulation on Auditory Evoked Potentials
... There are many intrinsic and extrinsic factors that play a role in auditory neuroplasticity. Throughout the lifespan, external and intrinsic factors work together and can lead to changes at the molecular level (e.g. molecules that can change the expression of genes), and cellular level (e.g. structu ...
... There are many intrinsic and extrinsic factors that play a role in auditory neuroplasticity. Throughout the lifespan, external and intrinsic factors work together and can lead to changes at the molecular level (e.g. molecules that can change the expression of genes), and cellular level (e.g. structu ...