Electrophysiological Identification of Tonic and Phasic Neurons in
... inflammatory pain within two hours as previously reported (Yu et al. 2009). All behavioral tests were performed by observers blinded to the experimental conditions as previously reported (Yu et al. 2009). To assess heat hypersensitivity, rats were placed in a plastic chamber on the surface of a 2 mm ...
... inflammatory pain within two hours as previously reported (Yu et al. 2009). All behavioral tests were performed by observers blinded to the experimental conditions as previously reported (Yu et al. 2009). To assess heat hypersensitivity, rats were placed in a plastic chamber on the surface of a 2 mm ...
chapter 9 the chemical senses, neural coding, and central nervous
... stimuli, but the first cell will respond more strongly to salt and the second cell will respond most strongly to sugar. The response profile of each cell across the entire range of stimuli that could potentially activate it is called its sensitivity function. The fact that receptor cells in many sen ...
... stimuli, but the first cell will respond more strongly to salt and the second cell will respond most strongly to sugar. The response profile of each cell across the entire range of stimuli that could potentially activate it is called its sensitivity function. The fact that receptor cells in many sen ...
Resting Membrane Potential
... resting to firing? • The resting membrane potential of a neuron is -70 mV • In order for a neuron to fire a signal, the membrane potential must reach a certain threshold, around -55 mV. • This happens when another neuron stimulates it and allows a few Na+ channels to open and a few Na+ ions enter th ...
... resting to firing? • The resting membrane potential of a neuron is -70 mV • In order for a neuron to fire a signal, the membrane potential must reach a certain threshold, around -55 mV. • This happens when another neuron stimulates it and allows a few Na+ channels to open and a few Na+ ions enter th ...
Regents Biology
... bound involuntary together by actionsconnective those not tissue. For under this conscious Research reason, controla Visit the single such as Glencoe spinal your heart Science nerve rate, can Web site at have breathing, tx.science. impulses digestion, glencoe.co going and to m forfrom more and gland ...
... bound involuntary together by actionsconnective those not tissue. For under this conscious Research reason, controla Visit the single such as Glencoe spinal your heart Science nerve rate, can Web site at have breathing, tx.science. impulses digestion, glencoe.co going and to m forfrom more and gland ...
Neurotransmitter and Neuromodulator Activity in
... sharp electrodes to record from the rNST neurons, but even with the very stable recording conditions provided by a brain slice it proved difficult to obtain and hold neurons (Bradley and Sweazey, 1990). These problems were overcome by using the whole cell configuration of the patch clamp technique t ...
... sharp electrodes to record from the rNST neurons, but even with the very stable recording conditions provided by a brain slice it proved difficult to obtain and hold neurons (Bradley and Sweazey, 1990). These problems were overcome by using the whole cell configuration of the patch clamp technique t ...
Nerve Tissue
... – as Na+ enters the cell it spreads out along the inside of the plasma membrane and depolarizes it producing a local potential called the postsynaptic potential – if it is strong enough and persistent enough – it opens voltage-regulated ion gates in the trigger zone ...
... – as Na+ enters the cell it spreads out along the inside of the plasma membrane and depolarizes it producing a local potential called the postsynaptic potential – if it is strong enough and persistent enough – it opens voltage-regulated ion gates in the trigger zone ...
found that in flight, 3D hippocampal place cells had nearly spherical
... and record the activity of individual neurons in freely flying bats allowed studying the spatial coding of 3D volumetric space by hippocampal neurons. We recorded a total of 139 well-isolated neurons from five bats in the dorsal CA1 region of the hippocampus (19). About half of the cells [73 out of ...
... and record the activity of individual neurons in freely flying bats allowed studying the spatial coding of 3D volumetric space by hippocampal neurons. We recorded a total of 139 well-isolated neurons from five bats in the dorsal CA1 region of the hippocampus (19). About half of the cells [73 out of ...
Picture 2.12. Some of the more often used neuron`s
... similar to a real biological neuron’s behaviour (a sigmoid function), but they also could be selected in such manner, which would assure the maximum efficiency of computations carried on by a neural network (a Gauss function). In all the cases function φ ( ) constitutes an important element going be ...
... similar to a real biological neuron’s behaviour (a sigmoid function), but they also could be selected in such manner, which would assure the maximum efficiency of computations carried on by a neural network (a Gauss function). In all the cases function φ ( ) constitutes an important element going be ...
Blind Separation of Spatio-temporal Data Sources
... neurons, or ‘neural cliques’, led us to the assumption that there are underlying sources that are mixed together into each observed firing pattern. To understand the concept of cliques in the context of spatio-temporal neural network activity, recall the representation of spatio-temporal data as a cu ...
... neurons, or ‘neural cliques’, led us to the assumption that there are underlying sources that are mixed together into each observed firing pattern. To understand the concept of cliques in the context of spatio-temporal neural network activity, recall the representation of spatio-temporal data as a cu ...
Corticostriatal neurons in auditory cortex drive decisions during
... The neural pathways by which information about the acoustic world reaches the auditory cortex are well characterized, but how auditory representations are transformed into motor commands is not known. Here we use a perceptual decision-making task in rats to study this transformation. We demonstrate ...
... The neural pathways by which information about the acoustic world reaches the auditory cortex are well characterized, but how auditory representations are transformed into motor commands is not known. Here we use a perceptual decision-making task in rats to study this transformation. We demonstrate ...
Irregular persistent activity induced by synaptic excitatory feedback
... Brunel and Wang, 2001), though not very robustly. However, these models do not account for the high irregularity shown in the experiments. While high irregularity can be obtained robustly in the baseline period, provided inhibition is sufficiently strong, because neurons receive synaptic inputs that ...
... Brunel and Wang, 2001), though not very robustly. However, these models do not account for the high irregularity shown in the experiments. While high irregularity can be obtained robustly in the baseline period, provided inhibition is sufficiently strong, because neurons receive synaptic inputs that ...
Realistic synaptic inputs for model neural networks
... solve the firing rate problem. I will assume for simplicity that all synapses lie on the dendritic tree of the model neuron and not on its soma, although somatic inputs could easily be included. The general structure of clle model neuron is shown in figure 2 ( a ) . Since the synaptic inputs are loc ...
... solve the firing rate problem. I will assume for simplicity that all synapses lie on the dendritic tree of the model neuron and not on its soma, although somatic inputs could easily be included. The general structure of clle model neuron is shown in figure 2 ( a ) . Since the synaptic inputs are loc ...
Untitled - inetTeacher
... functions of the central nervous system? The Communication Process • Messages are sent from the axon terminals of one neuron to the dendrites of other neurons • In order for this process to happen, the message must cross a synapse. • A synapse is a junction between the axon terminals of one neuron a ...
... functions of the central nervous system? The Communication Process • Messages are sent from the axon terminals of one neuron to the dendrites of other neurons • In order for this process to happen, the message must cross a synapse. • A synapse is a junction between the axon terminals of one neuron a ...
A proposed common neural mechanism for categorization and
... generic. Other groups have also reported categorical signals in LIP that are independent of planned movements or visuospatial factors, such as cognitive set signals related to the particular rule required to carry out a task26,27. A generic categorical representation is reminiscent of the reportinde ...
... generic. Other groups have also reported categorical signals in LIP that are independent of planned movements or visuospatial factors, such as cognitive set signals related to the particular rule required to carry out a task26,27. A generic categorical representation is reminiscent of the reportinde ...
Document
... Figure 3A.8 The dual functions of the autonomic nervous system The autonomic nervous system controls the more autonomous (or self-regulating) internal functions. Its sympathetic division arouses and expends energy. Its parasympathetic division calms and conserves energy, allowing routine maintenanc ...
... Figure 3A.8 The dual functions of the autonomic nervous system The autonomic nervous system controls the more autonomous (or self-regulating) internal functions. Its sympathetic division arouses and expends energy. Its parasympathetic division calms and conserves energy, allowing routine maintenanc ...
introduction
... potential, the excitability of the neuron to other stimuli is increased. This potential is called excitatory postsynaptic potential (EPSP). • The excitatory transmitter opens Na or Ca channels in the postsynaptic membrane. • Stimulation of some inputs produces hyperpolarizing responses and excitabil ...
... potential, the excitability of the neuron to other stimuli is increased. This potential is called excitatory postsynaptic potential (EPSP). • The excitatory transmitter opens Na or Ca channels in the postsynaptic membrane. • Stimulation of some inputs produces hyperpolarizing responses and excitabil ...
Copy of the full paper
... signals by precisely computing the neurons’ asynchronous spikes. Neuron models can precisely describe the biophysics of spikes (action potentials) by computing the currents flowing through cell membrane and synaptic nodes. It is possible to reduce the size of these models to facilitate their computa ...
... signals by precisely computing the neurons’ asynchronous spikes. Neuron models can precisely describe the biophysics of spikes (action potentials) by computing the currents flowing through cell membrane and synaptic nodes. It is possible to reduce the size of these models to facilitate their computa ...
Sensory System –L4
... The membrane potential of the receptor Excitation of the receptor results from a change in this potential. When the receptor potential rises above the threshold, action potentials appear and the receptor is active. The greater the intensity of the stimulus, the greater the receptor potential ...
... The membrane potential of the receptor Excitation of the receptor results from a change in this potential. When the receptor potential rises above the threshold, action potentials appear and the receptor is active. The greater the intensity of the stimulus, the greater the receptor potential ...
Computing auditory perception - Machine Learning Group, TU Berlin
... computational models. By combining formalised neurons, artificial neural networks and cognitive models, we can implement a model of auditory perception. Can we make use of such a model, e.g. in hearing aids, compression, automated music analysis, or music composition? We can, to some extent. But ofte ...
... computational models. By combining formalised neurons, artificial neural networks and cognitive models, we can implement a model of auditory perception. Can we make use of such a model, e.g. in hearing aids, compression, automated music analysis, or music composition? We can, to some extent. But ofte ...
Scene perception: inferior temporal cortex neurons encode the
... possible effects of the salience of any particular stimulus would not bias the results. To this end, we used a set of 141 stimuli during the data collection for these experiments, and any individual stimulus was typically used in only one (63 stimuli) or two (53 stimuli) experiments. Part of the exp ...
... possible effects of the salience of any particular stimulus would not bias the results. To this end, we used a set of 141 stimuli during the data collection for these experiments, and any individual stimulus was typically used in only one (63 stimuli) or two (53 stimuli) experiments. Part of the exp ...
Resonance Effect for Neural Spike Time Reliability
... van Steveninck et al. 1997). These results suggest that the intrinsic noise in the spike-generating mechanism is low relative to the intensity of the fluctuating input currents. In interpreting these results, an important consideration is the magnitude of the fluctuations in the input relative to th ...
... van Steveninck et al. 1997). These results suggest that the intrinsic noise in the spike-generating mechanism is low relative to the intensity of the fluctuating input currents. In interpreting these results, an important consideration is the magnitude of the fluctuations in the input relative to th ...