Towards Detection of Brain Tumor in Electroencephalogram
... versions of the dot product, and a radial basis function. The radial basis function SVM appears to provide superior performance in classifying functional classes of EEG signal when compared to the other SVM similarity metrics. EEG records carry information about abnormalities or responses to certain ...
... versions of the dot product, and a radial basis function. The radial basis function SVM appears to provide superior performance in classifying functional classes of EEG signal when compared to the other SVM similarity metrics. EEG records carry information about abnormalities or responses to certain ...
Full Text - Digital Access to Scholarship at Harvard
... Many CPN-specific genes identify anatomic diversity and distinct CPN populations Previous anatomical and birthdating analyses have shown that the broad CPN population is heterogeneous, including neurons born at different developmental times (e.g., E12.5–E13.5 for layer VI and V CPN, E15.5 for layer ...
... Many CPN-specific genes identify anatomic diversity and distinct CPN populations Previous anatomical and birthdating analyses have shown that the broad CPN population is heterogeneous, including neurons born at different developmental times (e.g., E12.5–E13.5 for layer VI and V CPN, E15.5 for layer ...
Alpha-beta and Gamma Rhythms Subserve Feedback and
... The SLN value for all projections among the 7 selected macaque visual areas was calculated (Markov et al., 2014). If, between area A and area B, the SLN for the A-to-B projection was higher than the SLN for the B-to-A projection, then A-to-B was considered a feedforward and B-to-A a feedback project ...
... The SLN value for all projections among the 7 selected macaque visual areas was calculated (Markov et al., 2014). If, between area A and area B, the SLN for the A-to-B projection was higher than the SLN for the B-to-A projection, then A-to-B was considered a feedforward and B-to-A a feedback project ...
Estrogen Actions Throughout the Brain
... actions in brain areas to which serotonin neurons project their axons. Second, ovarian hormones regulate synapse turnover in the CA1 region of the hippocampus during the 4- to 5-day estrous cycle of the female rat. Formation of new excitatory synapses is induced by estradiol and involves N-methyl-D- ...
... actions in brain areas to which serotonin neurons project their axons. Second, ovarian hormones regulate synapse turnover in the CA1 region of the hippocampus during the 4- to 5-day estrous cycle of the female rat. Formation of new excitatory synapses is induced by estradiol and involves N-methyl-D- ...
striatum
... Ventral striatum Ventral pallidum / subst. Nigra Thalamus (mediodorsal nc.) – Prefrontal cortex Circuit might be crucial for the learning and executionof reward – related behavior ...
... Ventral striatum Ventral pallidum / subst. Nigra Thalamus (mediodorsal nc.) – Prefrontal cortex Circuit might be crucial for the learning and executionof reward – related behavior ...
Chapter 16 - MBFys Home Page
... the complex interplay of a variety of neurochemical systems (with diverse post synaptic effects) comprising distinct cell clusters in the rostral tegmentum, and a myriad of other functions performed by neuronal clusters in more caudal parts of the reticular formation. Thus, with the advent of more p ...
... the complex interplay of a variety of neurochemical systems (with diverse post synaptic effects) comprising distinct cell clusters in the rostral tegmentum, and a myriad of other functions performed by neuronal clusters in more caudal parts of the reticular formation. Thus, with the advent of more p ...
stretch reflex 2
... b)Clinical significance: (clasp knife effect) • It is demonstrated clinically by passive flexion of a spastic limb (e.g. in upper motor neuron lesions) at its main joint. • As the limb is flexed, an initial resistance occurs due to contraction of this ms a result of the stretch reflex. • With persis ...
... b)Clinical significance: (clasp knife effect) • It is demonstrated clinically by passive flexion of a spastic limb (e.g. in upper motor neuron lesions) at its main joint. • As the limb is flexed, an initial resistance occurs due to contraction of this ms a result of the stretch reflex. • With persis ...
Negative mood-induction modulates default mode network resting
... mood-induction might require more cognitive effort from their healthy participants whereas neutral recall might require less cognitive effort. Given previous findings of task induced deactivation of the DMN they expected that the sad vs neutral mood induction would lead to reduced DMN connectivity [10] ...
... mood-induction might require more cognitive effort from their healthy participants whereas neutral recall might require less cognitive effort. Given previous findings of task induced deactivation of the DMN they expected that the sad vs neutral mood induction would lead to reduced DMN connectivity [10] ...
Specialized prefrontal "auditory fields": organization of primate
... keeping track of information for future decisions. These patterns suggest that the auditory association links of area 10 are critical for complex cognition. The first part of this review focuses on the organization of prefrontal-auditory pathways at the level of the system and the synapse, with a pa ...
... keeping track of information for future decisions. These patterns suggest that the auditory association links of area 10 are critical for complex cognition. The first part of this review focuses on the organization of prefrontal-auditory pathways at the level of the system and the synapse, with a pa ...
Drives and emotions: the hypothalamus and limbic system
... Figure 23-2 Overview of the pivotal role of the hypothalamus in drive-related activities. The hypothalamus can affect autonomic motor neurons both directly and through visceral motor programs in the brainstem and spinal cord, and it can influence visceral structures through its control over the pit ...
... Figure 23-2 Overview of the pivotal role of the hypothalamus in drive-related activities. The hypothalamus can affect autonomic motor neurons both directly and through visceral motor programs in the brainstem and spinal cord, and it can influence visceral structures through its control over the pit ...
Papazian Lab Homepage Electrical excitability in the brain
... Lin, M.A., Abramson, J., and Papazian, D.M. (2009) Transfer of ion binding site from ether-à-go-go to Shaker: Mg2+ binds to resting state to modulate channel opening. Submitted for publication. Figueroa, K.P.*, Minassian, N.A.*, Stevanin G., Waters, M., Garibyan, V., Bürk, K., Brice, A., Dürr, A., ...
... Lin, M.A., Abramson, J., and Papazian, D.M. (2009) Transfer of ion binding site from ether-à-go-go to Shaker: Mg2+ binds to resting state to modulate channel opening. Submitted for publication. Figueroa, K.P.*, Minassian, N.A.*, Stevanin G., Waters, M., Garibyan, V., Bürk, K., Brice, A., Dürr, A., ...
MAY 5, 2000 Submitted to the Annual Review of Neuroscience AN
... provides a fundamental mechanism by which the PFC exerts control over a wide range of processes in the service of goal-directed behavior. We describe the minimal set of functional properties that such a system must exhibit if it can serve as a mechanism of cognitive control. We then review the exist ...
... provides a fundamental mechanism by which the PFC exerts control over a wide range of processes in the service of goal-directed behavior. We describe the minimal set of functional properties that such a system must exhibit if it can serve as a mechanism of cognitive control. We then review the exist ...
central effects of centripetal impulses in axons of spinal ventral roots
... a neuron in the ventral horn to discharge about 15 times (records a). When the micro-electrode was inserted only 0.15 mm. (i.e., 150 micra) deeper, as is shown in records c, the discharges of the neuron were no longer apparent at the amplification employed but the action potentials of a second neuro ...
... a neuron in the ventral horn to discharge about 15 times (records a). When the micro-electrode was inserted only 0.15 mm. (i.e., 150 micra) deeper, as is shown in records c, the discharges of the neuron were no longer apparent at the amplification employed but the action potentials of a second neuro ...
Quantity and Three-Dimensional Position of the Recurrent and
... neurons will enhance the usefulness of the rat model in the study of reinnervation following trauma to these nerves. Methods: Female Sprague-Dawley rats underwent microsurgical transaction of the RLN, the SLN, or both the RLN and SLN or sham surgery. After transection, either Fluoro-Ruby (FR) or Flu ...
... neurons will enhance the usefulness of the rat model in the study of reinnervation following trauma to these nerves. Methods: Female Sprague-Dawley rats underwent microsurgical transaction of the RLN, the SLN, or both the RLN and SLN or sham surgery. After transection, either Fluoro-Ruby (FR) or Flu ...
Separating value from choice: delay discounting activity in the lateral
... al., 2004) even though these properties are not instantiated as sensory signals at the level of single trials. These findings have led to the proposal that decision-related activity may represent the subjective value of a specific action (Glimcher et al., 2005). In this framework, LIP activity combi ...
... al., 2004) even though these properties are not instantiated as sensory signals at the level of single trials. These findings have led to the proposal that decision-related activity may represent the subjective value of a specific action (Glimcher et al., 2005). In this framework, LIP activity combi ...
The Spinal Nerve
... The Three Meningeal Layers (Dura Mater, Arachnoid, Pia Mater) The Dura Mater Tough and fibrous Cranially fuses with periosteum of occipital bone Is continuous with cranial dura mater Caudally tapers to dense cord of collagen fibers and joins filum terminale in coccygeal ligament The Epidural Space B ...
... The Three Meningeal Layers (Dura Mater, Arachnoid, Pia Mater) The Dura Mater Tough and fibrous Cranially fuses with periosteum of occipital bone Is continuous with cranial dura mater Caudally tapers to dense cord of collagen fibers and joins filum terminale in coccygeal ligament The Epidural Space B ...
Optical imaging combined with targeted electrical recordings
... Fig. 3. General view of the electrode positioner microdrive. Top: The X /Y positioner stage, with the glass slightly open (left) and fully closed (right). Bottom: Photograph of the positioner microdrive at an angle of 608 on its stand. (A) Transparent sliding window (simple glass/Perspex cover) w ...
... Fig. 3. General view of the electrode positioner microdrive. Top: The X /Y positioner stage, with the glass slightly open (left) and fully closed (right). Bottom: Photograph of the positioner microdrive at an angle of 608 on its stand. (A) Transparent sliding window (simple glass/Perspex cover) w ...
Essential Roles for GSK-3s and GSK-3
... grossly different from heterozygote (+/2) littermate controls (see Figures S1A and S1B in the Supplemental Data available with this article online). We assessed axon projections of DRG neurons in null mice (2/2) in vivo by crossing with a sensory axon reporter line Brn3aTauLacZ (Quina et al., 2005; ...
... grossly different from heterozygote (+/2) littermate controls (see Figures S1A and S1B in the Supplemental Data available with this article online). We assessed axon projections of DRG neurons in null mice (2/2) in vivo by crossing with a sensory axon reporter line Brn3aTauLacZ (Quina et al., 2005; ...
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... action potentials, called a “low-threshold spike” (LTS) or “postinhibitory rebound.” The importance of the rebound response of TC cells was first established by Andersen and Eccles (9), who called it “postanodal exaltation.” It was later characterized in vitro by Llinás and Jahnsen (209) and in viv ...
... action potentials, called a “low-threshold spike” (LTS) or “postinhibitory rebound.” The importance of the rebound response of TC cells was first established by Andersen and Eccles (9), who called it “postanodal exaltation.” It was later characterized in vitro by Llinás and Jahnsen (209) and in viv ...
Full text article
... Establishment of the hypothalamic-hypophyseal-gonadal function is dependent on the highly controlled and dynamic interactions between regulatory signals from the brain, pituitary and gonads, all of them leading to the attainment of reproductive capacity, where a coordinated and timely activation of ...
... Establishment of the hypothalamic-hypophyseal-gonadal function is dependent on the highly controlled and dynamic interactions between regulatory signals from the brain, pituitary and gonads, all of them leading to the attainment of reproductive capacity, where a coordinated and timely activation of ...
The History of the EEG
... • Fast Fourier Transform seperates spontaneous EEG signal to component frequencies and amplitudes • Restriction: high frequency resolution demands long (in the range of seconds) analysis windows ...
... • Fast Fourier Transform seperates spontaneous EEG signal to component frequencies and amplitudes • Restriction: high frequency resolution demands long (in the range of seconds) analysis windows ...
Functional Properties of Parietal Visual Neurons: Mechanisms of
... The directional mechanisms of PVNs were studied by comparing the responses evoked by stimuli moving in opposite directions along a meridian of 100” extent, centered on the point of fixation (full-field stimuli), with those evoked by stimuli that moved along 40”, 20”, and lo” segments of such an axis ...
... The directional mechanisms of PVNs were studied by comparing the responses evoked by stimuli moving in opposite directions along a meridian of 100” extent, centered on the point of fixation (full-field stimuli), with those evoked by stimuli that moved along 40”, 20”, and lo” segments of such an axis ...
Cortical afferents to the smooth-pursuit region of the macaque
... Parameters of microstimulation and methods of testing pursuit neurons have been described elsewhere (Gottlieb et al. 1993, 1994; Shi et al. 1998). Sites were found where pursuit-like eye movements were electrically elicited and/ or where neurons specifically responded during smooth pursuit and not in ...
... Parameters of microstimulation and methods of testing pursuit neurons have been described elsewhere (Gottlieb et al. 1993, 1994; Shi et al. 1998). Sites were found where pursuit-like eye movements were electrically elicited and/ or where neurons specifically responded during smooth pursuit and not in ...
Functional Microarchitecture of Cat Primary Visual Cortex
... more clustered than would be expected from a random distribution. However, preferred phase, direction selectivity, relative modulation (F1/DC), and spatial frequency preference and tuning width showed no such clustering. By investigating the temporal patterns of neighbouring neurons in response to m ...
... more clustered than would be expected from a random distribution. However, preferred phase, direction selectivity, relative modulation (F1/DC), and spatial frequency preference and tuning width showed no such clustering. By investigating the temporal patterns of neighbouring neurons in response to m ...