disparity detection from stereo
... helps to form similar patterns in topographic maps; disparity selectivity of neurons changes smoothly along the neural plane. In summary, the work here is novel in the following aspects: 1) the first laminar model (paired layers in each area) for stereo; 2) the first utilization of temporal signals ...
... helps to form similar patterns in topographic maps; disparity selectivity of neurons changes smoothly along the neural plane. In summary, the work here is novel in the following aspects: 1) the first laminar model (paired layers in each area) for stereo; 2) the first utilization of temporal signals ...
Optimal Neural Spike Classification
... quantitatively. We implement the detection and classification techniques on the obtained signal, with various values of noise amplitude. In our case the ratio of the peak to peak values of the templates turns out to be 1.375. Also, the spike rate of one of the clases is twice that of the other class ...
... quantitatively. We implement the detection and classification techniques on the obtained signal, with various values of noise amplitude. In our case the ratio of the peak to peak values of the templates turns out to be 1.375. Also, the spike rate of one of the clases is twice that of the other class ...
PPT - Michael J. Watts
... • Proposed mid-1960s, but learning algorithms not available until mid-1980s • Continuous inputs • Continuous outputs • Continuous activation functions used o ...
... • Proposed mid-1960s, but learning algorithms not available until mid-1980s • Continuous inputs • Continuous outputs • Continuous activation functions used o ...
Decoding Motor Commands in Cortico-Basal Ganglia Circuits for the
... of medical research. A person with no legs, for example, could get a bionic pair of legs, controlled by the person’s own thoughts, thereby restoring full freedom of movement. Such devices controlled directly by the brain are called neuroprosthetics. Finding the signals that could control locomotion ...
... of medical research. A person with no legs, for example, could get a bionic pair of legs, controlled by the person’s own thoughts, thereby restoring full freedom of movement. Such devices controlled directly by the brain are called neuroprosthetics. Finding the signals that could control locomotion ...
CHAPTER 10: NERVOUS SYSTEM I
... Ca2+ channels open and calcium ions rush into axonal terminal causing synaptic vesicles (filled with neurotransmitter/NT) to release NT via exocytosis into the synaptic cleft. NT diffuses across synaptic cleft and depolarizes the postsynaptic neuron's membrane. An action potential (AP) is triggered ...
... Ca2+ channels open and calcium ions rush into axonal terminal causing synaptic vesicles (filled with neurotransmitter/NT) to release NT via exocytosis into the synaptic cleft. NT diffuses across synaptic cleft and depolarizes the postsynaptic neuron's membrane. An action potential (AP) is triggered ...
Electrical membrane properties of rat subthalamic neurons in an in
... chloride ( I E A ) at 10 mM, and blcuculline methiodlde at 50-100 pM. In some animals, the internal capsule, at the level of the entopeduncular nucleus, was transected by a Halazs knife at 6 - 1 0 days prior to the recording. This was tc eliminate afferents to STH ortginating from the structures ros ...
... chloride ( I E A ) at 10 mM, and blcuculline methiodlde at 50-100 pM. In some animals, the internal capsule, at the level of the entopeduncular nucleus, was transected by a Halazs knife at 6 - 1 0 days prior to the recording. This was tc eliminate afferents to STH ortginating from the structures ros ...
Reprint (1.52 MB PDF)
... researchers have recorded and electrically stimulated cultured networks at multiple spatial locations (Gross et al., 1993b; Tateno and Jimbo, 1999; Shahaf and Marom, 2001). We developed a closed-loop paradigm (Potter et al., 1997; DeMarse et al., 2001; Potter et al., 2004) consisting of a sensory-mo ...
... researchers have recorded and electrically stimulated cultured networks at multiple spatial locations (Gross et al., 1993b; Tateno and Jimbo, 1999; Shahaf and Marom, 2001). We developed a closed-loop paradigm (Potter et al., 1997; DeMarse et al., 2001; Potter et al., 2004) consisting of a sensory-mo ...
Chapter 7 - Psychology
... afferent neurons - are also called sensory neurons. They relay information from the sense organs (e.g., touch) toward the brain. efferent neurons - are also called motor neurons. They carry neural impulses from the brain to the muscles. primary afferents - Are specialized sensory neurons in the skin ...
... afferent neurons - are also called sensory neurons. They relay information from the sense organs (e.g., touch) toward the brain. efferent neurons - are also called motor neurons. They carry neural impulses from the brain to the muscles. primary afferents - Are specialized sensory neurons in the skin ...
Reflections on agranular architecture: predictive coding in the motor
... Figure 2. Graphical representation of the computational interactions between expectation and error units: the interactions depicted here are based on the differential equations describing the neuronal dynamics implied by generalised predictive coding (e.g., Equation 3 in [30]). Note the hierarchical ...
... Figure 2. Graphical representation of the computational interactions between expectation and error units: the interactions depicted here are based on the differential equations describing the neuronal dynamics implied by generalised predictive coding (e.g., Equation 3 in [30]). Note the hierarchical ...
Sodium channel expression in the ventral posterolateral nucleus of
... Nav1.2, or Nav1.6 in VPL neurons, although we can not rule out a contribution of other channels that could have an affect on firing thresholds [19,20]. Our results demonstrate for the first time, that changes in sodium channel expression within the thalamus are associated with abnormal sensory proce ...
... Nav1.2, or Nav1.6 in VPL neurons, although we can not rule out a contribution of other channels that could have an affect on firing thresholds [19,20]. Our results demonstrate for the first time, that changes in sodium channel expression within the thalamus are associated with abnormal sensory proce ...
A Self-Organizing Neural Network for Contour Integration through Synchronized Firing
... Contour integration in low-level vision is believed to occur based on lateral interaction between neurons with similar orientation tuning. The exact neural mechanisms underlying such interactions, and their developmental origins, are not well understood. This paper suggests through computational sim ...
... Contour integration in low-level vision is believed to occur based on lateral interaction between neurons with similar orientation tuning. The exact neural mechanisms underlying such interactions, and their developmental origins, are not well understood. This paper suggests through computational sim ...
Modeling goal-directed spatial navigation in the rat based on physiological
... There are no initially known patterns and buffering cannot be LTP-dependent, as the establishment of LTP requires in excess of 100 ms (Bi & Poo, 1998). It is hypothesized that intrinsic mechanisms may maintain firing patterns, as initially proposed by Lisman (Lisman & Idiart, 1995). One such mechani ...
... There are no initially known patterns and buffering cannot be LTP-dependent, as the establishment of LTP requires in excess of 100 ms (Bi & Poo, 1998). It is hypothesized that intrinsic mechanisms may maintain firing patterns, as initially proposed by Lisman (Lisman & Idiart, 1995). One such mechani ...
Response Characteristics of Spinal Cord Dorsal Horn Neurons in
... Hao, Jing-Xia, Ron C. Kupers, and Xiao-Jun Xu. Response characteristics of spinal cord dorsal horn neurons in chronic allodynic rats after spinal cord injury. J Neurophysiol 92: 1391–1399, 2004; 10.1152/jn.00121.2004. The physiological mechanisms of chronic pain in patients with spinal cord injury ( ...
... Hao, Jing-Xia, Ron C. Kupers, and Xiao-Jun Xu. Response characteristics of spinal cord dorsal horn neurons in chronic allodynic rats after spinal cord injury. J Neurophysiol 92: 1391–1399, 2004; 10.1152/jn.00121.2004. The physiological mechanisms of chronic pain in patients with spinal cord injury ( ...
Basal ganglia discharge abnormalities in Parkinson`s disease
... synchronized oscillatory bursting in the basal ganglia, studies of the correlation or coherence between tremor and basal ganglia oscillations have not been conclusive, perhaps resulting from the fact that different limbs of parkinsonian patients may engage in tremor of different frequencies (Bergman ...
... synchronized oscillatory bursting in the basal ganglia, studies of the correlation or coherence between tremor and basal ganglia oscillations have not been conclusive, perhaps resulting from the fact that different limbs of parkinsonian patients may engage in tremor of different frequencies (Bergman ...
BRAINSTEM
... Transmits taste from the anterior 2/3 of tongue via the chorda tympani nerve. Receives information from taste buds located in the fungiform and foliate papillae. Sensory and autonomic root of the facial nerve. Chorda tympani actually arises from this segment of VII. Cell bodies lie in the geniculate ...
... Transmits taste from the anterior 2/3 of tongue via the chorda tympani nerve. Receives information from taste buds located in the fungiform and foliate papillae. Sensory and autonomic root of the facial nerve. Chorda tympani actually arises from this segment of VII. Cell bodies lie in the geniculate ...
A Computer Simulation of Olfactory Cortex with Functional
... records. For example, shock stimuli applied to the LOT are often used to elicit characteristic cortical evoked potentials in vivo 16,17,18. In the model we simulated this stimulus paradigm by simultaneously activating all 100 input fibers. Another measure of cortical activity used most successfully ...
... records. For example, shock stimuli applied to the LOT are often used to elicit characteristic cortical evoked potentials in vivo 16,17,18. In the model we simulated this stimulus paradigm by simultaneously activating all 100 input fibers. Another measure of cortical activity used most successfully ...
PINP: A New Method of Tagging Neuronal Populations
... Neural circuits are exquisitely organized, consisting of many different neuronal subpopulations. However, it is difficult to assess the functional roles of these subpopulations using conventional extracellular recording techniques because these techniques do not easily distinguish spikes from differ ...
... Neural circuits are exquisitely organized, consisting of many different neuronal subpopulations. However, it is difficult to assess the functional roles of these subpopulations using conventional extracellular recording techniques because these techniques do not easily distinguish spikes from differ ...
