Biology across the ecosystem
... rate in muscle cells during exercise demands faster supply of oxygen and glucose, and removal of carbon dioxide from muscle cells. Additional requirements met by increased breathing and heart rate. Measurements for factors such as heart rate and blood pressure show individual variation and are there ...
... rate in muscle cells during exercise demands faster supply of oxygen and glucose, and removal of carbon dioxide from muscle cells. Additional requirements met by increased breathing and heart rate. Measurements for factors such as heart rate and blood pressure show individual variation and are there ...
Stages of Sleep And Brain Mechanisms
... • Insomnia is a sleep disorder associated with inadequate sleep. – Caused by a number of factors including noise, stress, pain medication. – Can also be the result of disorders such as epilepsy, Parkinson’s disease, depression, anxiety or other psychiatric conditions. – Dependence on sleeping pills ...
... • Insomnia is a sleep disorder associated with inadequate sleep. – Caused by a number of factors including noise, stress, pain medication. – Can also be the result of disorders such as epilepsy, Parkinson’s disease, depression, anxiety or other psychiatric conditions. – Dependence on sleeping pills ...
Striate cortex increases contrast gain of macaque LGN neurons
... device to transdurally cool and subsequently rewarm the dorsal surface of the macaque striate cortex. A 2-mm-diameter hole in the center of the plate permitted us to insert a microelectrode through the dura and advance it to reach the layer 6–white matter interface which was recognized by the depth ...
... device to transdurally cool and subsequently rewarm the dorsal surface of the macaque striate cortex. A 2-mm-diameter hole in the center of the plate permitted us to insert a microelectrode through the dura and advance it to reach the layer 6–white matter interface which was recognized by the depth ...
PowerPoint 演示文稿 - Shandong University
... Patterns of neuronal electrical activity recorded are called brain waves Brain waves change with age, sensory stimuli, brain disease, and the chemical state of the body An electroencephalogram (EEG) records this activity EEGs can be used to diagnose and localize brain lesions, tumors, infarcts, infe ...
... Patterns of neuronal electrical activity recorded are called brain waves Brain waves change with age, sensory stimuli, brain disease, and the chemical state of the body An electroencephalogram (EEG) records this activity EEGs can be used to diagnose and localize brain lesions, tumors, infarcts, infe ...
Nonlinear brain dynamics as macroscopic manifestation of
... long-range correlation, with the requirement for synaptic renewal at each successive relay. Even the presence of relatively sparse long axons, which provide for high velocity jumps to seed areas over long distances creating small-world effects (Watts and Strogatz, 1998; Kozma et al., 2005), cannot e ...
... long-range correlation, with the requirement for synaptic renewal at each successive relay. Even the presence of relatively sparse long axons, which provide for high velocity jumps to seed areas over long distances creating small-world effects (Watts and Strogatz, 1998; Kozma et al., 2005), cannot e ...
universidade federal do rio grande do norte instituto do
... Recently, the field of cellular reprogramming has been revolutionized by works showing the potential to directly lineage-reprogram somatic cells into neurons upon overexpression of specific transcription factors. This technique offers a promising strategy to study the molecular mechanisms of neurona ...
... Recently, the field of cellular reprogramming has been revolutionized by works showing the potential to directly lineage-reprogram somatic cells into neurons upon overexpression of specific transcription factors. This technique offers a promising strategy to study the molecular mechanisms of neurona ...
EEG - pressthebar
... Patterns of neuronal electrical activity recorded are called brain waves Brain waves change with age, sensory stimuli, brain disease, and the chemical state of the body An electroencephalogram (EEG) records this activity EEGs can be used to diagnose and localize brain lesions, tumors, infarcts, infe ...
... Patterns of neuronal electrical activity recorded are called brain waves Brain waves change with age, sensory stimuli, brain disease, and the chemical state of the body An electroencephalogram (EEG) records this activity EEGs can be used to diagnose and localize brain lesions, tumors, infarcts, infe ...
nervous system part 6 EEG, walkfulness and sleep
... Patterns of neuronal electrical activity recorded are called brain waves Brain waves change with age, sensory stimuli, brain disease, and the chemical state of the body An electroencephalogram (EEG) records this activity EEGs can be used to diagnose and localize brain lesions, tumors, infarcts, infe ...
... Patterns of neuronal electrical activity recorded are called brain waves Brain waves change with age, sensory stimuli, brain disease, and the chemical state of the body An electroencephalogram (EEG) records this activity EEGs can be used to diagnose and localize brain lesions, tumors, infarcts, infe ...
A Brief History of the Reticular Formation
... The electrical stimulation experiments of the mammalian reticular formation by Hess inspired fellow Germans Eric von Holst and Ursula von Saint-Paul to try the same procedure in chickens with their report appearing in English in 1961. Since birds do not have a large cerbral cortex to plan motor acti ...
... The electrical stimulation experiments of the mammalian reticular formation by Hess inspired fellow Germans Eric von Holst and Ursula von Saint-Paul to try the same procedure in chickens with their report appearing in English in 1961. Since birds do not have a large cerbral cortex to plan motor acti ...
The Role of Dopamine in Locomotor ... 173
... discrimination but are deficient in their ability to perform a delayed alteration task. These findings may indicate DA involvement in the maintenance of highly complex tasks requiring elaborate s-s associative ...
... discrimination but are deficient in their ability to perform a delayed alteration task. These findings may indicate DA involvement in the maintenance of highly complex tasks requiring elaborate s-s associative ...
Lec: 1 Dr.Methaq Mueen Hemodynamic disorders Hemo means
... Clinical correlations: (EFFECTS OF EDEMA) a. Subcutaneous edema in cardiac & renal failure can impair wound healing or clearance of infection. b. Pulmonary edema can cause death by interfering with normal ventilatory function; due to: (1) Fluid collection in alveolar space& impaired oxygen diffusion ...
... Clinical correlations: (EFFECTS OF EDEMA) a. Subcutaneous edema in cardiac & renal failure can impair wound healing or clearance of infection. b. Pulmonary edema can cause death by interfering with normal ventilatory function; due to: (1) Fluid collection in alveolar space& impaired oxygen diffusion ...
Histamine neurons in the tuberomamillary nucleus: a whole center
... of the posterior hypothalamus, to innervate almost all central nervous system (CNS) regions. This feature, a compact cell group with widely distributed fibers, resembles that of other amine systems, such as noradrenaline or serotonin, and is consistent with a function for histamine over a host of ph ...
... of the posterior hypothalamus, to innervate almost all central nervous system (CNS) regions. This feature, a compact cell group with widely distributed fibers, resembles that of other amine systems, such as noradrenaline or serotonin, and is consistent with a function for histamine over a host of ph ...
Nucleus Basalis and Thalamic Control of Neocortical Activity in the
... assumeda unitary control of the electrical activity of the cortex related to consciousness,arousal, and the sleep-wakingcycle. The neuronal substrateof the hypothesized energizingsystem, however, has been a long-standingpuzzle. For the past 4 decades,it was generally accepted that the reticulothalam ...
... assumeda unitary control of the electrical activity of the cortex related to consciousness,arousal, and the sleep-wakingcycle. The neuronal substrateof the hypothesized energizingsystem, however, has been a long-standingpuzzle. For the past 4 decades,it was generally accepted that the reticulothalam ...
Unique features of the human brainstem and cerebellum
... 2001; Hoover and Strick, 1999; Dum and Strick, 2003; Kelly and Strick, 2003; Akkal et al., 2007). In addition to its contribution to cortical function, the cerebellum also can influence motor control by projections to brainstem structures like the vestibular nuclei that in turn affect movement (Lang ...
... 2001; Hoover and Strick, 1999; Dum and Strick, 2003; Kelly and Strick, 2003; Akkal et al., 2007). In addition to its contribution to cortical function, the cerebellum also can influence motor control by projections to brainstem structures like the vestibular nuclei that in turn affect movement (Lang ...
Detecting Action Potentials in Neuronal Populations with Calcium
... neuronal population is feasible with calcium indicators (18 –21) because they produce large signals (up to 1000% changes in fluorescence), making it possible to measure the responses from single neurons (22), presynaptic terminals (23), or even dendritic spines (24). In addition, development of bulk ...
... neuronal population is feasible with calcium indicators (18 –21) because they produce large signals (up to 1000% changes in fluorescence), making it possible to measure the responses from single neurons (22), presynaptic terminals (23), or even dendritic spines (24). In addition, development of bulk ...
MATERNAL BEHAVIOUR IN LACTATING RATS STIMULATES c
... behaviour that included milk letdown. Both groups of dams had a similar number of 67,000 mol. wt glutamate decarboxylaseimmunoreactive cells in each site, although the number of 67,000 mol. wt glutamate decarboxylase-immunoreactive cells per microscopic ®eld was signi®cantly greater in the caudal ve ...
... behaviour that included milk letdown. Both groups of dams had a similar number of 67,000 mol. wt glutamate decarboxylaseimmunoreactive cells in each site, although the number of 67,000 mol. wt glutamate decarboxylase-immunoreactive cells per microscopic ®eld was signi®cantly greater in the caudal ve ...
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... these findings are. Others have measured dopamine in tasks requiring a series of actions to obtain rewards, but have not seen reliable evidence of ramps10. Is this because ramping signals are confined to spatial navigation? Are there no dopamine ramps in our brains when we go about making coffee (Fi ...
... these findings are. Others have measured dopamine in tasks requiring a series of actions to obtain rewards, but have not seen reliable evidence of ramps10. Is this because ramping signals are confined to spatial navigation? Are there no dopamine ramps in our brains when we go about making coffee (Fi ...
Glucose-sensing neurons: Are they physiologically relevant?
... specifically glucose sensitive and did not respond to other stimuli such as light pinch or cold application to the tail of the rat. Neurons of Type 2 and Type 3 were only inhibited by plasma glucose levels of 17 mM and higher (brain glucose > 4.2 mM). These subclasses of LH glucose-sensing neurons r ...
... specifically glucose sensitive and did not respond to other stimuli such as light pinch or cold application to the tail of the rat. Neurons of Type 2 and Type 3 were only inhibited by plasma glucose levels of 17 mM and higher (brain glucose > 4.2 mM). These subclasses of LH glucose-sensing neurons r ...
Cerebral blood flow and gray matter volume covariance patterns of
... patterns of CBF and GMV related to each cognitive measure using the SSM approach implemented in the principal components analysis (PCA) toolbox (http://groups.google.com/group/gcva) [Habeck et al., 2005; Habeck and Stern, 2007]. The analyses were conducted separately for each of the two brain measur ...
... patterns of CBF and GMV related to each cognitive measure using the SSM approach implemented in the principal components analysis (PCA) toolbox (http://groups.google.com/group/gcva) [Habeck et al., 2005; Habeck and Stern, 2007]. The analyses were conducted separately for each of the two brain measur ...
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... eosinophilic cell bodies were remarkably shrunken with condensed and clumped nuclear chromatin at 12 to 48 hours (Figure 1A). These shrunken eosinophilic neurons were observed by EM as disseminated electron-dense dark neurons that were homogeneously condensed and surrounded by remarkably swollen ast ...
... eosinophilic cell bodies were remarkably shrunken with condensed and clumped nuclear chromatin at 12 to 48 hours (Figure 1A). These shrunken eosinophilic neurons were observed by EM as disseminated electron-dense dark neurons that were homogeneously condensed and surrounded by remarkably swollen ast ...
PSYCHOLOGY AND INFORMATION SYSTEMS
... Recursion in the brain • The human brain can process its own processing our evolution may involve just this feature • People can think about their own thinking, analyze their own analysis - how can an analysis process analyze itself? • Each person, or self, has a concept of themselves - how can a s ...
... Recursion in the brain • The human brain can process its own processing our evolution may involve just this feature • People can think about their own thinking, analyze their own analysis - how can an analysis process analyze itself? • Each person, or self, has a concept of themselves - how can a s ...
Temporal and spatial alterations in GPi neuronal encoding might
... mean firing rate of the neuron over the recording period (Baker & Gerstein, 2001). The mean firing rate of the neuron across n trials (n > 15), and aligned on the corresponding stimulus, was then calculated, to give a smoothed version of the standard peri-event time histogram (PETH) (Baker & Gerstein, ...
... mean firing rate of the neuron over the recording period (Baker & Gerstein, 2001). The mean firing rate of the neuron across n trials (n > 15), and aligned on the corresponding stimulus, was then calculated, to give a smoothed version of the standard peri-event time histogram (PETH) (Baker & Gerstein, ...
Supplementary Information (doc 2155K)
... in the nonlinear spatial normalization. Visual inspection indicated that, when combined with nonlinear spatial normalization, this approach provided enhanced anatomical sensitivity and selectivity compared to the probabilistic ‘centromedial’ amygdala ROI distributed with the FSL software package30. ...
... in the nonlinear spatial normalization. Visual inspection indicated that, when combined with nonlinear spatial normalization, this approach provided enhanced anatomical sensitivity and selectivity compared to the probabilistic ‘centromedial’ amygdala ROI distributed with the FSL software package30. ...
Haemodynamic response
In haemodynamics, the body must respond to physical activities, external temperature, and other factors by homeostatically adjusting its blood flow to deliver nutrients such as oxygen and glucose to stressed tissues and allow them to function. Haemodynamic response (HR) allows the rapid delivery of blood to active neuronal tissues. Since higher processes in the brain occur almost constantly, cerebral blood flow is essential for the maintenance of neurons, astrocytes, and other cells of the brain.