Nonlinear Population Codes - Department of Nonlinear Dynamics
... effect of correlations on the accuracy of population coding. They showed that long-range positive correlations that vary smoothly with the functional distance between the neurons lead to saturation of the accuracy by which the stimulus parameters can be extracted to a nite value, even in the limit ...
... effect of correlations on the accuracy of population coding. They showed that long-range positive correlations that vary smoothly with the functional distance between the neurons lead to saturation of the accuracy by which the stimulus parameters can be extracted to a nite value, even in the limit ...
Techniques and Methods to Implement Neural Networks Using SAS
... for this Feedforward Backpropagation net. Here there are two matrices M1 and M2 whose elements are the weights on connections. M1 refers to the interface between the input and hidden layers, and M2 refers to that between the hidden layer and output layer. Since connections exist from each neuron in ...
... for this Feedforward Backpropagation net. Here there are two matrices M1 and M2 whose elements are the weights on connections. M1 refers to the interface between the input and hidden layers, and M2 refers to that between the hidden layer and output layer. Since connections exist from each neuron in ...
Chapter 7 Body Systems
... Spatial summation—adding together the effects of several knobs being activated simultaneously and stimulating different locations on the postsynaptic membrane, producing an action potential ...
... Spatial summation—adding together the effects of several knobs being activated simultaneously and stimulating different locations on the postsynaptic membrane, producing an action potential ...
Guide to the CERAD Form
... respectively) are required to complete this form. It should be completed by the neuropathologist immediately following the survey. The macroreport is used for sections C and D of the CERAD form. The microreport is used to complete sections E, G and H of the CERAD from. Section C Gross examination br ...
... respectively) are required to complete this form. It should be completed by the neuropathologist immediately following the survey. The macroreport is used for sections C and D of the CERAD form. The microreport is used to complete sections E, G and H of the CERAD from. Section C Gross examination br ...
the primate amygdala: neuronal representations of
... elicited by the fat, stimuli with a similar mouth feel but non-fat chemical composition were used. These stimuli included paraffin/MO (pure hydrocarbon, viscosity 25 cP at 23 °C, Sigma), and silicone oil (SiO; Si(CH3)2O)n, 10, 100 or 280, and 1000 cP (Brookfield viscometer calibration fluid except 2 ...
... elicited by the fat, stimuli with a similar mouth feel but non-fat chemical composition were used. These stimuli included paraffin/MO (pure hydrocarbon, viscosity 25 cP at 23 °C, Sigma), and silicone oil (SiO; Si(CH3)2O)n, 10, 100 or 280, and 1000 cP (Brookfield viscometer calibration fluid except 2 ...
Tuberoinfundibular peptid 39 and its receptor in the central nervous
... We demonstrated TIP39 expressing neurons in a 3 day old macaque brain using in situ hybridization. TIP39 cells were found in two locations, identical as described in rodents: the rostral medial (SPF-PVG) and the caudal lateral (SPFp-PIL) division of the subparafascicular area of the thalamus and the ...
... We demonstrated TIP39 expressing neurons in a 3 day old macaque brain using in situ hybridization. TIP39 cells were found in two locations, identical as described in rodents: the rostral medial (SPF-PVG) and the caudal lateral (SPFp-PIL) division of the subparafascicular area of the thalamus and the ...
View the Program Guide - International Society for Stem Cell Research
... The Stem Cell Models of Neural Regeneration and Disease International Symposium is located in the Center for Regenerative Therapies Dresden (CRTD) Research Center and Cluster of Excellence at the TU Dresden. All program sessions will be in The Auditorium, Ground Floor. The Tuesday, 2 February Break- ...
... The Stem Cell Models of Neural Regeneration and Disease International Symposium is located in the Center for Regenerative Therapies Dresden (CRTD) Research Center and Cluster of Excellence at the TU Dresden. All program sessions will be in The Auditorium, Ground Floor. The Tuesday, 2 February Break- ...
Synaptic reverberation underlying mnemonic persistent activity
... realistic models of cortical neurons and synapses22–27. Figure 2 illustrates the biophysics of an attractor network. In an object-working-memory model by Amit and Brunel22, subpopulations of neurons are selective to different object stimuli. When the strength of excitatory connections between neuron ...
... realistic models of cortical neurons and synapses22–27. Figure 2 illustrates the biophysics of an attractor network. In an object-working-memory model by Amit and Brunel22, subpopulations of neurons are selective to different object stimuli. When the strength of excitatory connections between neuron ...
Computational themes of peripheral processing
... an intensity-invariant representation of the amplitude modulation of the perceived signal and to increase the signalto-noise ratio. Next, the representation of the amplitude modulation of a signal by the auditory receptor neurons (Machens et al. 2001) needs to be processed in a way that higher level ...
... an intensity-invariant representation of the amplitude modulation of the perceived signal and to increase the signalto-noise ratio. Next, the representation of the amplitude modulation of a signal by the auditory receptor neurons (Machens et al. 2001) needs to be processed in a way that higher level ...
Rapid Taste Responses in the Gustatory Cortex during Licking
... General electrophysiology. Once the electrodes were located in GC, recording commenced. When the signals at the current location had degraded, the electrodes were lowered further in GC in 100 m increments. Throughout the experiment, neural activity was recorded continuously. Differential recordings ...
... General electrophysiology. Once the electrodes were located in GC, recording commenced. When the signals at the current location had degraded, the electrodes were lowered further in GC in 100 m increments. Throughout the experiment, neural activity was recorded continuously. Differential recordings ...
Identified nerve cells and insect behavior
... complex, and so studies of their organization typically have not yielded completely defined circuits as are known from some other invertebrates. However, several important findings have emerged. Analysis of neuronal oscillators for rhythmic behavior have delineated a profound influence of sensory fe ...
... complex, and so studies of their organization typically have not yielded completely defined circuits as are known from some other invertebrates. However, several important findings have emerged. Analysis of neuronal oscillators for rhythmic behavior have delineated a profound influence of sensory fe ...
Neural Correlates of Object-Associated Choice Behavior
... firing rate for the 1 s period before the object cue appeared), the unit was labeled as event-responsive. Trials with missing timestamps or interevent latencies exceeding 2 SDs from the mean session latencies were removed from the analyses. Task-factor analysis and multicollinearity control. Neurons ...
... firing rate for the 1 s period before the object cue appeared), the unit was labeled as event-responsive. Trials with missing timestamps or interevent latencies exceeding 2 SDs from the mean session latencies were removed from the analyses. Task-factor analysis and multicollinearity control. Neurons ...
Reinforcement Learning Using a Continuous Time Actor
... incomplete knowledge of its state. On the other hand, experiments show that dopamine, a neurotransmitter associated with pleasure, is released in the brain when reward, or a reward-predicting event, occurs [7]. Dopamine has been shown to modulate the induction of plasticity in timing non-specific pr ...
... incomplete knowledge of its state. On the other hand, experiments show that dopamine, a neurotransmitter associated with pleasure, is released in the brain when reward, or a reward-predicting event, occurs [7]. Dopamine has been shown to modulate the induction of plasticity in timing non-specific pr ...
Development and organization of glial cells in the peripheral
... Fig. 3. Details of pupal wings (around 38 h AP) from glial-specific enhancer trap lines stained with anti-HRP and anti-β-gal. Bar, 25 µm. (A-C) Proximal region of a 2206 wing stained with (A) anti-β-gal, (B) anti-HRP, (C) double exposure of the same wing displayed in A and B to show glial and neuron ...
... Fig. 3. Details of pupal wings (around 38 h AP) from glial-specific enhancer trap lines stained with anti-HRP and anti-β-gal. Bar, 25 µm. (A-C) Proximal region of a 2206 wing stained with (A) anti-β-gal, (B) anti-HRP, (C) double exposure of the same wing displayed in A and B to show glial and neuron ...
Neural crest stem cell
... Secondo Ateneo di Napoli 5 via L. Armanni 80138 Napoli, Italy Telephone Number: +39 0815666014/7720 FAX Number: +39 0815666014 E-mail: [email protected] ...
... Secondo Ateneo di Napoli 5 via L. Armanni 80138 Napoli, Italy Telephone Number: +39 0815666014/7720 FAX Number: +39 0815666014 E-mail: [email protected] ...
Contribution of Pedunculopontine Tegmental Nucleus Neurons to
... Isa, and Hiroshi Aizawa. Contribution of pedunculopontine tegmental nucleus neurons to performance of visually guided saccade tasks in monkeys. J Neurophysiol 88: 715–731, 2002; 10.1152/jn.00484.2001. The cholinergic pedunculopontine tegmental nucleus (PPTN) is one of the major ascending arousal sys ...
... Isa, and Hiroshi Aizawa. Contribution of pedunculopontine tegmental nucleus neurons to performance of visually guided saccade tasks in monkeys. J Neurophysiol 88: 715–731, 2002; 10.1152/jn.00484.2001. The cholinergic pedunculopontine tegmental nucleus (PPTN) is one of the major ascending arousal sys ...
A Point Process Model for Auditory Neurons Considering
... The CIF is for a point process a history-dependent generalization of the rate function of a Poisson process. To obtain a discrete formulation of the CIF we choose K sufficiently large so that each subinterval Δ = K−1T contains at most one spike. We index the subintervals k = 1, …, K and define nk to ...
... The CIF is for a point process a history-dependent generalization of the rate function of a Poisson process. To obtain a discrete formulation of the CIF we choose K sufficiently large so that each subinterval Δ = K−1T contains at most one spike. We index the subintervals k = 1, …, K and define nk to ...
Decoding a Temporal Population Code
... a generic circuit of recurrently connected integrate-and-fire neurons coupled with synapses that show frequency-dependent adaptation (Markram, Wang, & Tsodyks, 1998). This circuit transforms temporal patterns into highdimensional and purely spatial patterns. A key property of this model is that ther ...
... a generic circuit of recurrently connected integrate-and-fire neurons coupled with synapses that show frequency-dependent adaptation (Markram, Wang, & Tsodyks, 1998). This circuit transforms temporal patterns into highdimensional and purely spatial patterns. A key property of this model is that ther ...
Dopamine Modulates the Function of Group II and Group III
... Parkinsonian state, an agonist of group II mGluRs could selectively reduce the increased excitatory drive through the indirect pathway. In contrast, we have shown that group III mGluRs are presynaptically located on excitatory and inhibitory terminals projecting to SNr neurons and that activation of ...
... Parkinsonian state, an agonist of group II mGluRs could selectively reduce the increased excitatory drive through the indirect pathway. In contrast, we have shown that group III mGluRs are presynaptically located on excitatory and inhibitory terminals projecting to SNr neurons and that activation of ...
Distinct core thalamocortical pathways to central and dorsal primary
... (Schreiner et al., 2000). The cNB region has the highest spectral resolution (Q factor) measured with sound level at 40 decibels above threshold (Q40). A small dNB region has higher spectral resolution than adjacent cBB and dBB regions but lower median spectral resolution than the cNB region (Imaizu ...
... (Schreiner et al., 2000). The cNB region has the highest spectral resolution (Q factor) measured with sound level at 40 decibels above threshold (Q40). A small dNB region has higher spectral resolution than adjacent cBB and dBB regions but lower median spectral resolution than the cNB region (Imaizu ...
Channelrhodopsin
Channelrhodopsins are a subfamily of retinylidene proteins (rhodopsins) that function as light-gated ion channels. They serve as sensory photoreceptors in unicellular green algae, controlling phototaxis: movement in response to light. Expressed in cells of other organisms, they enable light to control electrical excitability, intracellular acidity, calcium influx, and other cellular processes. Channelrhodopsin-1 (ChR1) and Channelrhodopsin-2 (ChR2) from the model organism Chlamydomonas reinhardtii are the first discovered channelrhodopsins. Variants have been cloned from other algal species, and more are expected.