Cerebral correlates of delta waves during non
... during Non Rapid Eye Movement (NREM) sleep in non-sleepdeprived normal young adults, based on the statistical analysis of a positron emission tomography (PET) sleep data set. One hundred fifteen PET scans were obtained using H215O under continuous polygraphic monitoring during stages 2 – 4 of NREM s ...
... during Non Rapid Eye Movement (NREM) sleep in non-sleepdeprived normal young adults, based on the statistical analysis of a positron emission tomography (PET) sleep data set. One hundred fifteen PET scans were obtained using H215O under continuous polygraphic monitoring during stages 2 – 4 of NREM s ...
... In case (i) neuron A delivers an electrochemical signal directly to neuron B while in case (ii) neurons B and C share a common input from neuron A. In each case the resulting spike train recordings will show a strong synchronisation (or correlation) between A and B / C while B and C will show a weak ...
Contextual modulation and stimulus selectivity in extrastriate cortex
... subpopulations of neurons in the primary visual cortex (V1). The responses of these neurons can be reasonably well approximated with motion energy models (Adelson & Bergen, 1985), which, importantly, can be elaborated upon to include contextual modulation (Tsui et al., 2010). Moreover, the subsequen ...
... subpopulations of neurons in the primary visual cortex (V1). The responses of these neurons can be reasonably well approximated with motion energy models (Adelson & Bergen, 1985), which, importantly, can be elaborated upon to include contextual modulation (Tsui et al., 2010). Moreover, the subsequen ...
Temporal Profiles of Axon Terminals, Synapses and Spines in the
... minutes each time, with a 5-hour interval between the 2 occlusions, anesthesia was discontinued immediately after each cervical surgery, the animals soon became awake and moved spontaneously. Ischemia-positive animals registering ⬎13 points were selected based on the stroke index score determined du ...
... minutes each time, with a 5-hour interval between the 2 occlusions, anesthesia was discontinued immediately after each cervical surgery, the animals soon became awake and moved spontaneously. Ischemia-positive animals registering ⬎13 points were selected based on the stroke index score determined du ...
Thermal impact on spiking properties in Hodgkin–Huxley neuron
... This study is to approach the above topic by examining the temperature dependence of spiking threshold of a neuron subject to synaptic stimulus, based on the widely accepted Hodgkin–Huxley (HH) neuron model, as an example, which was originally proposed to account for the exciting properties of giant ...
... This study is to approach the above topic by examining the temperature dependence of spiking threshold of a neuron subject to synaptic stimulus, based on the widely accepted Hodgkin–Huxley (HH) neuron model, as an example, which was originally proposed to account for the exciting properties of giant ...
Lorazepam dose-dependently decreases risk-taking
... Second, a whole-brain analysis was conducted with the signal contrast of risky (selecting a 40 or 80 and receiving a gain of 40 or 80 points) vs safe (selecting 20 and receiving a sure gain of 20 points) responses as the main dependent measure. Similarly, another whole-brain analysis explored the ou ...
... Second, a whole-brain analysis was conducted with the signal contrast of risky (selecting a 40 or 80 and receiving a gain of 40 or 80 points) vs safe (selecting 20 and receiving a sure gain of 20 points) responses as the main dependent measure. Similarly, another whole-brain analysis explored the ou ...
Neural network activation during a stopsignal task discriminates
... Cocaine dependence is defined by a loss of inhibitory control over drug-use behaviors, mirrored by measurable impairments in laboratory tasks of inhibitory control. The current study tested the hypothesis that deficits in multiple subprocesses of behavioral control are associated with reliable neura ...
... Cocaine dependence is defined by a loss of inhibitory control over drug-use behaviors, mirrored by measurable impairments in laboratory tasks of inhibitory control. The current study tested the hypothesis that deficits in multiple subprocesses of behavioral control are associated with reliable neura ...
Neuroscience Newsletter, May 2015 - MSc/PhD/MD
... of the individual membrane layers. More recent models, like the “liquid croissant” and the “Ofiomosaic model”, based on light microscopy imaging implied a growth from the outer surface of the myelin sheath and the involvement of the axon membrane rotation as an active force driving the myelination ( ...
... of the individual membrane layers. More recent models, like the “liquid croissant” and the “Ofiomosaic model”, based on light microscopy imaging implied a growth from the outer surface of the myelin sheath and the involvement of the axon membrane rotation as an active force driving the myelination ( ...
Chapter 12 Nervous System Review Assignment
... a. repolarization at the adjacent node of Ranvier. b. depolarization at the adjacent node of Ranvier. c. repolarization at the adjacent region of the membrane. d. depolarization at the adjacent region of the membrane. ____ 28. Multiple sclerosis is a disorder characterized by the breakdown of the my ...
... a. repolarization at the adjacent node of Ranvier. b. depolarization at the adjacent node of Ranvier. c. repolarization at the adjacent region of the membrane. d. depolarization at the adjacent region of the membrane. ____ 28. Multiple sclerosis is a disorder characterized by the breakdown of the my ...
Mapping of second order olfactory neurons and ventral
... Detection of chemical stimuli from the external environment is performed by all living organisms. Of all senses, the chemical sense is the evolutionary oldest. Also, the neural system devoted to process chemosensory information is strikingly well conserved across the different species, in particular ...
... Detection of chemical stimuli from the external environment is performed by all living organisms. Of all senses, the chemical sense is the evolutionary oldest. Also, the neural system devoted to process chemosensory information is strikingly well conserved across the different species, in particular ...
Chapter 12 PowerPoint - Hillsborough Community College
... • Thin (2–4 mm) superficial layer of gray matter • 40% of the mass of the brain ...
... • Thin (2–4 mm) superficial layer of gray matter • 40% of the mass of the brain ...
Introduction to Sensory Systems
... Introduction to Sensory Systems The receptive field Definition – area in the world (or on retina) where change in stimulus induces change in response in recorded neuron. Extension – area in multi-dimensional ...
... Introduction to Sensory Systems The receptive field Definition – area in the world (or on retina) where change in stimulus induces change in response in recorded neuron. Extension – area in multi-dimensional ...
A Neural Network of Adaptively Timed Reinforcement
... The present article further develops a part of the theory, introduced in Grossberg and Schmajuk (1989), which analyses how recognition events control motivated behaviors that are adaptively timed. Several different types of brain processes organize the temporal unfolding of serial order in behavior. ...
... The present article further develops a part of the theory, introduced in Grossberg and Schmajuk (1989), which analyses how recognition events control motivated behaviors that are adaptively timed. Several different types of brain processes organize the temporal unfolding of serial order in behavior. ...
Tolerance to Sound Intensity of Binaural
... Western Medical Supply). An adequate level of anesthesia was maintained with supplemental injections of ketamine when necessary. Body temperature was maintained with a heating pad. The skull was immobilized by placing the owl in a stereotaxic head holder such that the palatine ridge (the roof of the ...
... Western Medical Supply). An adequate level of anesthesia was maintained with supplemental injections of ketamine when necessary. Body temperature was maintained with a heating pad. The skull was immobilized by placing the owl in a stereotaxic head holder such that the palatine ridge (the roof of the ...
PDF file
... (e.g., computing covariance matrix for each neuron). The multi-layer in-place learning network proposed here is an in-place learning network whose architecture is biologically inspired. The weight vector of each neuron is not computed based on gradient. Instead, it is the amnesic average (called the ...
... (e.g., computing covariance matrix for each neuron). The multi-layer in-place learning network proposed here is an in-place learning network whose architecture is biologically inspired. The weight vector of each neuron is not computed based on gradient. Instead, it is the amnesic average (called the ...
A computational hypothesis for allostasis: delineation of substance
... The hedonic effect of an addictive substance on the brain’s reward system is orchestrated by within-system neuroadaptations and between-system neuroadaptations (4). Experimental observations show that rats undergo a continuous degradation of hedonic valence during extended periods of cocaine consump ...
... The hedonic effect of an addictive substance on the brain’s reward system is orchestrated by within-system neuroadaptations and between-system neuroadaptations (4). Experimental observations show that rats undergo a continuous degradation of hedonic valence during extended periods of cocaine consump ...
Visually induced and spontaneous behavior in the zebrafish
... Deep neural networks are now capable of competing with primates in image recognition tasks (Cadieu et al., 2014). The architecture of artificial neural network reflects by fair means our understanding of the brain: an input-output system that builds complex associations from simple local operations ...
... Deep neural networks are now capable of competing with primates in image recognition tasks (Cadieu et al., 2014). The architecture of artificial neural network reflects by fair means our understanding of the brain: an input-output system that builds complex associations from simple local operations ...
Bad Fish - Groch Biology
... improved and he was on his way to a full recovery. After discussing his case with his physician, he learned that he had probably been the victim of a pufferfish poisoning. (in your group research pufferfish… what could have caused his problems?) ...
... improved and he was on his way to a full recovery. After discussing his case with his physician, he learned that he had probably been the victim of a pufferfish poisoning. (in your group research pufferfish… what could have caused his problems?) ...
Chapter 06 Abstract Neuron Models
... viewpoint if they both generate similar sets of emergent behaviors." In every abstract neuron model some or even all of its dynamical equations are completely different from those of the physiological description of the neuron. Furthermore, the abstract neuron will be described by fewer equations th ...
... viewpoint if they both generate similar sets of emergent behaviors." In every abstract neuron model some or even all of its dynamical equations are completely different from those of the physiological description of the neuron. Furthermore, the abstract neuron will be described by fewer equations th ...
Chapter 2 - Biological Basis of Behavior
... Somatic nervous system Autonomic nervous system Psychology: An Introduction Charles A. Morris & Albert A. Maisto © 2005 Prentice Hall ...
... Somatic nervous system Autonomic nervous system Psychology: An Introduction Charles A. Morris & Albert A. Maisto © 2005 Prentice Hall ...
Evidence for time division multiplexing of multiple simultaneous
... In the natural world many stimuli or events occur at the same time, evoking activity in an ...
... In the natural world many stimuli or events occur at the same time, evoking activity in an ...
Diagnostic History of Traumatic Axonal Injury in Patients with
... of axonal injury than that seen in the classic DAI with the development of neuroimaging techniques, the term “TAI” has been used for these more limited injuries: in practice, TAI has been used in milder cases than DAI [40]. The current tendency is to use one term “TAI” including DAI and the unificat ...
... of axonal injury than that seen in the classic DAI with the development of neuroimaging techniques, the term “TAI” has been used for these more limited injuries: in practice, TAI has been used in milder cases than DAI [40]. The current tendency is to use one term “TAI” including DAI and the unificat ...
Age-related Increase in Astrocytes in the Visual Area V2 of the Cat
... old (12–13 years old) cats. An immunohistochemical method was applied to demonstrate glial fibrillary acidic protein (GFAP)-immunoreactive astrocytes. Under the microscope, the densities of the astrocytes and the diameters of the somata were calculated, and the processes of the astrocytes were also ...
... old (12–13 years old) cats. An immunohistochemical method was applied to demonstrate glial fibrillary acidic protein (GFAP)-immunoreactive astrocytes. Under the microscope, the densities of the astrocytes and the diameters of the somata were calculated, and the processes of the astrocytes were also ...
PubMed Central CANADA
... For comparison to the internal tasks, we used two externally-driven tasks that would be expected to reduce activity in the DN (a sensorimotor control task and a vowel detection task). For these tasks we also used trait descriptors to ensure similar input and output characteristics, varying only the ...
... For comparison to the internal tasks, we used two externally-driven tasks that would be expected to reduce activity in the DN (a sensorimotor control task and a vowel detection task). For these tasks we also used trait descriptors to ensure similar input and output characteristics, varying only the ...
with task performance neural responses and determining their
... high-level neurons tend to be mixtures of many different types of signals. While this diversity is thought to allow for flexible neural processing, it presents a challenge for understanding how neural responses relate to task performance and to neural computation. To address these challenges, we hav ...
... high-level neurons tend to be mixtures of many different types of signals. While this diversity is thought to allow for flexible neural processing, it presents a challenge for understanding how neural responses relate to task performance and to neural computation. To address these challenges, we hav ...