Preserving information in neural transmission - CNL
... Weyand (2007)] and absence of a refractory period. Such cells were not analyzed further because it was impossible to assign individual EPSPs to a particular ganglion cell. Stimuli larger than the receptive field center were more likely to lead to EPSPs from multiple ganglion cells. To minimize this ...
... Weyand (2007)] and absence of a refractory period. Such cells were not analyzed further because it was impossible to assign individual EPSPs to a particular ganglion cell. Stimuli larger than the receptive field center were more likely to lead to EPSPs from multiple ganglion cells. To minimize this ...
Document
... manner the network is trained one layer at a time starting with layer 1 and finishing with layer 4. In the investigations described here, the numbers of training epochs for layers 1–4 were 50, 100, 100 and 75, respectively. The network’s performance is assessed using two information theoretic measur ...
... manner the network is trained one layer at a time starting with layer 1 and finishing with layer 4. In the investigations described here, the numbers of training epochs for layers 1–4 were 50, 100, 100 and 75, respectively. The network’s performance is assessed using two information theoretic measur ...
Fine Gating Properties of Channels Responsible for Persistent
... a b s t r a c t The gating properties of channels responsible for the generation of persistent Na current (INaP) in entorhinal cortex layer II principal neurons were investigated by performing cell-attached, patch-clamp experiments in acutely isolated cells. Voltage-gated Na-channel activity was r ...
... a b s t r a c t The gating properties of channels responsible for the generation of persistent Na current (INaP) in entorhinal cortex layer II principal neurons were investigated by performing cell-attached, patch-clamp experiments in acutely isolated cells. Voltage-gated Na-channel activity was r ...
Simulating in vivo-like Synaptic Input Patterns in Multicompartmental
... neurons. For example, each individual human cerebellar Purkinje neuron is estimated to receive more than 100,000 excitatory synaptic contacts from granule cells, and additional contacts from local circuit inhibitory interneurons and the powerfully excitatory climbing fiber (Ito 1984). Although Purki ...
... neurons. For example, each individual human cerebellar Purkinje neuron is estimated to receive more than 100,000 excitatory synaptic contacts from granule cells, and additional contacts from local circuit inhibitory interneurons and the powerfully excitatory climbing fiber (Ito 1984). Although Purki ...
KISHORE Aswathy - School of Computing
... representation’. Accordingly, different features of the object such as shape, texture and colour will be represented in different parts of the brain. Hence, in order to have a complete representation for the object, these individual localised representations have to be bound together to form a globa ...
... representation’. Accordingly, different features of the object such as shape, texture and colour will be represented in different parts of the brain. Hence, in order to have a complete representation for the object, these individual localised representations have to be bound together to form a globa ...
Burst Firing and Modulation of Functional Connectivity in Cat Striate
... within the recorded group. Cross-correlation analysis was then used to identify directly coupled neuron pairs. The 22 multiunit groups recorded typically showed activity from two to six neurons, each containing between 1 and 15 neuron pairs. From a total of 241 neuron pairs, 91 (38%) had a shifted c ...
... within the recorded group. Cross-correlation analysis was then used to identify directly coupled neuron pairs. The 22 multiunit groups recorded typically showed activity from two to six neurons, each containing between 1 and 15 neuron pairs. From a total of 241 neuron pairs, 91 (38%) had a shifted c ...
Bridging Cytoarchitectonics and Connectomics in Human Cerebral
... communication (Zilles et al., 2015a, 2015b; Barbas, 2015; Mesulam, 1998). In parallel, studies examining connectivity at the macroscale level of brain organization have suggested that the brain’s global network structure of large-scale white matter projections may play an important role in neural pr ...
... communication (Zilles et al., 2015a, 2015b; Barbas, 2015; Mesulam, 1998). In parallel, studies examining connectivity at the macroscale level of brain organization have suggested that the brain’s global network structure of large-scale white matter projections may play an important role in neural pr ...
16-1 INTRODUCTION The ANS regulates many important functions
... gland is different from other structures supplied by the sympathetic division because it consists of only preganglionic neurons. 1) The preganglionic axon passes through the collateral ganglion and goes to the adrenal medulla, which is the center part of the adrenal gland. 2) The preganglionic axons ...
... gland is different from other structures supplied by the sympathetic division because it consists of only preganglionic neurons. 1) The preganglionic axon passes through the collateral ganglion and goes to the adrenal medulla, which is the center part of the adrenal gland. 2) The preganglionic axons ...
16-1 INTRODUCTION The ANS regulates many important functions
... gland is different from other structures supplied by the sympathetic division because it consists of only preganglionic neurons. 1) The preganglionic axon passes through the collateral ganglion and goes to the adrenal medulla, which is the center part of the adrenal gland. 2) The preganglionic axons ...
... gland is different from other structures supplied by the sympathetic division because it consists of only preganglionic neurons. 1) The preganglionic axon passes through the collateral ganglion and goes to the adrenal medulla, which is the center part of the adrenal gland. 2) The preganglionic axons ...
Zebrafish and motor control over the last decade
... 2005). Finally, another major advantage is the similarities to networks in Xenopus tadpoles, which are already reasonably well understood based upon decades of study (Roberts, 2000; Roberts et al., 1998). This has allowed more directed questions about cell types whose structure and transmitter pheno ...
... 2005). Finally, another major advantage is the similarities to networks in Xenopus tadpoles, which are already reasonably well understood based upon decades of study (Roberts, 2000; Roberts et al., 1998). This has allowed more directed questions about cell types whose structure and transmitter pheno ...
An Integrative Theory of Prefrontal Cortex Function Earl K. Miller
... the brain, and there is a lot of evidence that it meets this requirement There is also evidence that PFC neurons are no only encoding associations between cues and responses or cues and rewards, but also more complex mapping for more complex tasks. (If/then rules) PFC sends projections to much o ...
... the brain, and there is a lot of evidence that it meets this requirement There is also evidence that PFC neurons are no only encoding associations between cues and responses or cues and rewards, but also more complex mapping for more complex tasks. (If/then rules) PFC sends projections to much o ...
Circuit reactivation dynamically regulates synaptic
... layer (L) 2/3 pyramidal neurons for patch-clamp recording in thalamocortical slices of mouse barrel cortex. In the absence of any ionic or pharmacological manipulation, we observed UP states, or spontaneous neuronal activity characterized by periods of prolonged membrane depolarization, during conti ...
... layer (L) 2/3 pyramidal neurons for patch-clamp recording in thalamocortical slices of mouse barrel cortex. In the absence of any ionic or pharmacological manipulation, we observed UP states, or spontaneous neuronal activity characterized by periods of prolonged membrane depolarization, during conti ...
5-Autonomic Nervous System
... In the sympathertic division the ganglia are close to the CNS so when someone, for exmple, is being chased by a lion they need a lot of things to work together at the same time and since the ganglion is close to the source it can send a single message far and wide. ...
... In the sympathertic division the ganglia are close to the CNS so when someone, for exmple, is being chased by a lion they need a lot of things to work together at the same time and since the ganglion is close to the source it can send a single message far and wide. ...
resting membrane potential
... • Even in the resting state the cell is a little permeable to sodium, chloride, and potassium ions • The Nernst equation doesn’t account for leakage of sodium and chloride into the cell; it deals with just one ion at a time • It is helpful to consider the steady-state ion movements across the membra ...
... • Even in the resting state the cell is a little permeable to sodium, chloride, and potassium ions • The Nernst equation doesn’t account for leakage of sodium and chloride into the cell; it deals with just one ion at a time • It is helpful to consider the steady-state ion movements across the membra ...
Single-trial decoding of intended eye movement goals from lateral
... target locations and calculating MI for 1,000 different shuffles. We labeled neurons as having significant target location information within an epoch if the MI was greater than 99% of the null values for that epoch. Neurons with significant MI during the baseline epoch were excluded from further ne ...
... target locations and calculating MI for 1,000 different shuffles. We labeled neurons as having significant target location information within an epoch if the MI was greater than 99% of the null values for that epoch. Neurons with significant MI during the baseline epoch were excluded from further ne ...
wood ant (formica lugubris zett.)
... 3. The glial windows allow soma-somatic interneuronal junctions. O f all adjacent neurons in a selected neuron pool, only 42% were interconnected by such junctions. 4. The intercellular space at the soma-somatic junctions has an average diameter of 30 A; occasionally, it is collapsed and an external ...
... 3. The glial windows allow soma-somatic interneuronal junctions. O f all adjacent neurons in a selected neuron pool, only 42% were interconnected by such junctions. 4. The intercellular space at the soma-somatic junctions has an average diameter of 30 A; occasionally, it is collapsed and an external ...
2. Organization of the Exam and Assessment Criteria
... understanding fundamental mechanisms of the brain, psychical processes and behaviour. Applications of contemporary psychophysiology. The problem of correlation between psychical and physiological, the mind and brain problem: history and approaches. Systemic and integrative psychophysiology. Fields o ...
... understanding fundamental mechanisms of the brain, psychical processes and behaviour. Applications of contemporary psychophysiology. The problem of correlation between psychical and physiological, the mind and brain problem: history and approaches. Systemic and integrative psychophysiology. Fields o ...
2. Organization of the Exam and Assessment Criteria
... understanding fundamental mechanisms of the brain, psychical processes and behaviour. Applications of contemporary psychophysiology. The problem of correlation between psychical and physiological, the mind and brain problem: history and approaches. Systemic and integrative psychophysiology. Fields o ...
... understanding fundamental mechanisms of the brain, psychical processes and behaviour. Applications of contemporary psychophysiology. The problem of correlation between psychical and physiological, the mind and brain problem: history and approaches. Systemic and integrative psychophysiology. Fields o ...
The amygdala, a part of the brain known for its role in fear, also
... Tracking chatter By monitoring nerve cell activity in patients as they rated the value of various junk foods, researchers were able to locate specific cells in the amygdala whose responses corresponded with value ratings. The graph shows how one neuron’s firing rate (electrode location shown above) ...
... Tracking chatter By monitoring nerve cell activity in patients as they rated the value of various junk foods, researchers were able to locate specific cells in the amygdala whose responses corresponded with value ratings. The graph shows how one neuron’s firing rate (electrode location shown above) ...
Impact of thousand-and-one amino acid 2 kinase
... cue semaphorin 3A (Sema3A), and they have delineated a pathway from these results whereby Sema3A and Nrp1 transduce signals through TAOK2 and c-Jun N-Terminal kinase (JNK) to regulate basal dendrite development in cortical neurons.[20] The pyramidal neurons, which are abundant in brain regions assoc ...
... cue semaphorin 3A (Sema3A), and they have delineated a pathway from these results whereby Sema3A and Nrp1 transduce signals through TAOK2 and c-Jun N-Terminal kinase (JNK) to regulate basal dendrite development in cortical neurons.[20] The pyramidal neurons, which are abundant in brain regions assoc ...
Time Constants of h Current in Layer II Stellate Cells... along the Dorsal to Ventral Axis of Medial Entorhinal Cortex
... oratories), obtained after anesthetization with isoflurane (Abbot Laboratories) and decapitation. The Institutional Animal Care and Use Committee at Boston University approved all experimental techniques. The brain was rapidly removed under 4°C artificial CSF (ACSF) (SigmaAldrich) [ACSF concentratio ...
... oratories), obtained after anesthetization with isoflurane (Abbot Laboratories) and decapitation. The Institutional Animal Care and Use Committee at Boston University approved all experimental techniques. The brain was rapidly removed under 4°C artificial CSF (ACSF) (SigmaAldrich) [ACSF concentratio ...
Sonic Hedgehog Expression in Corticofugal Projection Neurons
... protein) (Srinivas et al., 2001) reporter mouse to fate map Shhexpressing neurons. We found YFP positive fate mapped cells throughout the rostrocaudal axis of the cortex, nearly all of which were positive for NeuN. The vast majority of Shh lineage cells in the cortex were GABA negative pyramidal neu ...
... protein) (Srinivas et al., 2001) reporter mouse to fate map Shhexpressing neurons. We found YFP positive fate mapped cells throughout the rostrocaudal axis of the cortex, nearly all of which were positive for NeuN. The vast majority of Shh lineage cells in the cortex were GABA negative pyramidal neu ...
Artificial neural network
... Take a collection of training patterns for a node, some of which cause it to fire (the 1-taught set of patterns) and others which prevent it from doing so (the 0taught set). Then the patterns not in the collection cause the node to fire if, on comparison, they have more input elements in common with ...
... Take a collection of training patterns for a node, some of which cause it to fire (the 1-taught set of patterns) and others which prevent it from doing so (the 0taught set). Then the patterns not in the collection cause the node to fire if, on comparison, they have more input elements in common with ...
Properties and Functional Role of Voltage
... channels were activated by passively spread sodium spikes recorded at the same position, and experiments using dual recordings showed that the channels serve to actively dampen back-propagation of somatic sodium spikes. In more distal dendrites, potassium currents were activated by voltage waveforms ...
... channels were activated by passively spread sodium spikes recorded at the same position, and experiments using dual recordings showed that the channels serve to actively dampen back-propagation of somatic sodium spikes. In more distal dendrites, potassium currents were activated by voltage waveforms ...