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... of columns is of approximately same size in both cats and monkeys. The functional properties of neurons are similar within a column, but significantly differ between adjacent columns (Mountcastle, 1997). Seminal work by Hubel and Wiesel in the 1960s and 1970s then triggered tremendous interest in s ...
... of columns is of approximately same size in both cats and monkeys. The functional properties of neurons are similar within a column, but significantly differ between adjacent columns (Mountcastle, 1997). Seminal work by Hubel and Wiesel in the 1960s and 1970s then triggered tremendous interest in s ...
Wild-Type Nonneuronal Cells Extend Survival of SOD1 Mutant
... reducing wild-type SOD1 activity (8) and is either unaffected (8) or enhanced (9) by increasing wild-type SOD1 activity, mutant SOD1 must cause disease through acquisition of toxic properties. These may include aberrant oxidative chemistry catalyzed by SOD1-bound copper (10–14) or poisoning of a cel ...
... reducing wild-type SOD1 activity (8) and is either unaffected (8) or enhanced (9) by increasing wild-type SOD1 activity, mutant SOD1 must cause disease through acquisition of toxic properties. These may include aberrant oxidative chemistry catalyzed by SOD1-bound copper (10–14) or poisoning of a cel ...
MARMORATAl - Journal of Neuroscience
... suggests to us that the embryonic stages we have studied correspond to those that these authors labeled stages 8 through 11. Although.the early developmental stages in these two leech orders are very different (Dawydoff, 1959; Mann, 1962), it is probably the case that later stages, and particularly ...
... suggests to us that the embryonic stages we have studied correspond to those that these authors labeled stages 8 through 11. Although.the early developmental stages in these two leech orders are very different (Dawydoff, 1959; Mann, 1962), it is probably the case that later stages, and particularly ...
A cellular mechanism for cortical associations: an organizing
... cognition [21–25] and conscious perception [26–29]. This has led to the suggestion that the cortex operates via an interaction between feed-forward and feedback information [30–32]. In this scenario, feedback provides context or predictive information for modulating neural activity in a given area [ ...
... cognition [21–25] and conscious perception [26–29]. This has led to the suggestion that the cortex operates via an interaction between feed-forward and feedback information [30–32]. In this scenario, feedback provides context or predictive information for modulating neural activity in a given area [ ...
Gaze effects in the cerebral cortex: reference frames for
... fields), orbital eye position, and limb movement direction. We will review these findings and suggest that neuronal discharges in PMd might allow for at least two distinct sensory-to-motor transformations: one combines retinal and eye position signals for target localization as has been proposed, e. ...
... fields), orbital eye position, and limb movement direction. We will review these findings and suggest that neuronal discharges in PMd might allow for at least two distinct sensory-to-motor transformations: one combines retinal and eye position signals for target localization as has been proposed, e. ...
Swim Initiation Neurons in Tritonia diomedea1
... in the Tritonia swim network was the interneuronal population responsible for producing the long-lasting, declining ‘‘ramp’’ of depolarization in the dorsal swim interneurons (DSIs) of the CPG in response to a swim-eliciting stimulus (Lennard et al., 1980). Prior work (Getting and Dekin, 1985) concl ...
... in the Tritonia swim network was the interneuronal population responsible for producing the long-lasting, declining ‘‘ramp’’ of depolarization in the dorsal swim interneurons (DSIs) of the CPG in response to a swim-eliciting stimulus (Lennard et al., 1980). Prior work (Getting and Dekin, 1985) concl ...
Neural Network Dynamics
... selectivity, and other features of neuronal responses to sensory input (reviewed, for example, in Dayan & Abbott 2001). In the absence of that input, neurons in these models are typically silent. Although this approach has had considerable success in accounting for response properties in primary sen ...
... selectivity, and other features of neuronal responses to sensory input (reviewed, for example, in Dayan & Abbott 2001). In the absence of that input, neurons in these models are typically silent. Although this approach has had considerable success in accounting for response properties in primary sen ...
35 | the nervous system
... the new neurons will die, researchers found that an increase in the number of surviving new neurons in the hippocampus correlated with how well rats learned a new task. Interestingly, both exercise and some antidepressant medications also promote neurogenesis in the hippocampus. Stress has the oppos ...
... the new neurons will die, researchers found that an increase in the number of surviving new neurons in the hippocampus correlated with how well rats learned a new task. Interestingly, both exercise and some antidepressant medications also promote neurogenesis in the hippocampus. Stress has the oppos ...
Cellular, synaptic and network effects of neuromodulation
... potentials, and the bottom neuron was firing in bursts of action potentials separated by long interburst intervals. When we consider that biological neurons may display eight, ten, or more different voltage-dependent currents, and that the subunit composition of each channel type can regulate its ki ...
... potentials, and the bottom neuron was firing in bursts of action potentials separated by long interburst intervals. When we consider that biological neurons may display eight, ten, or more different voltage-dependent currents, and that the subunit composition of each channel type can regulate its ki ...
hormonal control of cell form and number
... These volumes were large enough to insure that the measurements of neuron density were distributed normally (tests for kurtosis or skewness on randomly selected data sets were not statistically significant). For RA, systematic transits along the three cardinal axes did not reveal inhomogeneity in th ...
... These volumes were large enough to insure that the measurements of neuron density were distributed normally (tests for kurtosis or skewness on randomly selected data sets were not statistically significant). For RA, systematic transits along the three cardinal axes did not reveal inhomogeneity in th ...
Redgrave - people.vcu.edu
... volume of biological data relating to DA systems11,12,14, little information was available concerning the sources of short-latency sensory inputs to midbrain DA neurons. Because most experiments analysing the sensory properties of DA neurons have used visual stimuli2,9, from this point we concentrat ...
... volume of biological data relating to DA systems11,12,14, little information was available concerning the sources of short-latency sensory inputs to midbrain DA neurons. Because most experiments analysing the sensory properties of DA neurons have used visual stimuli2,9, from this point we concentrat ...
Modulation of Responses of Feline Ventral Spinocerebellar Tract
... Ten neurons were tested with more than one drug; this was done by replacing the drug-containing micropipette after completed ionophoresis with a new micropipette filled with the new compound, different from the one previously used. This procedure involved withdrawing both the recording and the drug- ...
... Ten neurons were tested with more than one drug; this was done by replacing the drug-containing micropipette after completed ionophoresis with a new micropipette filled with the new compound, different from the one previously used. This procedure involved withdrawing both the recording and the drug- ...
Chapter 11 Outline - CM
... Axolemma – plasma membrane that surrounds axon and its cytoplasm or axoplasm Substances may travel through axoplasm using one of two types of transport, which are together termed axonal transport or flow o Slow axonal transport – transports substances like cytoskeleton proteins from cell body throug ...
... Axolemma – plasma membrane that surrounds axon and its cytoplasm or axoplasm Substances may travel through axoplasm using one of two types of transport, which are together termed axonal transport or flow o Slow axonal transport – transports substances like cytoskeleton proteins from cell body throug ...
Spontaneous Spike Activity of Spinoreticular Tract Neurons During
... to modulate the rostral transmission of sensory nociceptive information. Earlier evoked potential studies by Pompeiano and his colleagues suggested that a variety of spinal sensory pathways whose axons project through the medial leminiscus are regulated only during the rapid eye movement (REM) porti ...
... to modulate the rostral transmission of sensory nociceptive information. Earlier evoked potential studies by Pompeiano and his colleagues suggested that a variety of spinal sensory pathways whose axons project through the medial leminiscus are regulated only during the rapid eye movement (REM) porti ...
Sleep-wake cycles: EEG
... hybridization aimed at identifying mRNA’s species that are expressed only in discrete nuclei within the hypothalamus – New hypothalamic mRNA (hypocretin 1 and 2) found by in-situ hybridization to occur in the lateral hypothalamus • Sakurai et al. (1998) transfected cell lines that stably express eac ...
... hybridization aimed at identifying mRNA’s species that are expressed only in discrete nuclei within the hypothalamus – New hypothalamic mRNA (hypocretin 1 and 2) found by in-situ hybridization to occur in the lateral hypothalamus • Sakurai et al. (1998) transfected cell lines that stably express eac ...
Representing Spatial Information for Limb - Research
... ment with the code during maintenance of static posture. It is well known that static cell discharge is monotonically related to the corresponding position of the hand in space in Ml (Georgopoulos et al., 1984; Georgopoulos and Massey, 1985; Kettner et al., 1988), PMd (Caminiti et al., 1991), area 2 ...
... ment with the code during maintenance of static posture. It is well known that static cell discharge is monotonically related to the corresponding position of the hand in space in Ml (Georgopoulos et al., 1984; Georgopoulos and Massey, 1985; Kettner et al., 1988), PMd (Caminiti et al., 1991), area 2 ...
Restraining influence of A2 neurons in chronic control of arterial
... cardiovascular responses observed. Rats were supplied with normal rat chow and drinking water ad libitum, and kept on a 12 h light–12 h dark cycle in a sound proofed, temperature and humidity controlled room. Water drunk and urine produced were measured daily. A radio-telemetry system (Data Sciences ...
... cardiovascular responses observed. Rats were supplied with normal rat chow and drinking water ad libitum, and kept on a 12 h light–12 h dark cycle in a sound proofed, temperature and humidity controlled room. Water drunk and urine produced were measured daily. A radio-telemetry system (Data Sciences ...
The role responses of expression and identity in the face
... neuron were measured to a standard digitized set of stimuli of different faces and of non-face stimuli ~. If a neuron responded to one or more of the faces, but to none of the non-face stimuli in the set, then a wide range of digitized and real 3-dimensional non-face stimuli were shown, to determine ...
... neuron were measured to a standard digitized set of stimuli of different faces and of non-face stimuli ~. If a neuron responded to one or more of the faces, but to none of the non-face stimuli in the set, then a wide range of digitized and real 3-dimensional non-face stimuli were shown, to determine ...
Aging reduces total neuron number in the dorsal component of the
... Hopkins University vivarium until they were 24 months old. For euthanasia, rats were anesthetized with isoflurane and perfused transcardially with sterile saline, followed by 4% paraformaldehyde in phosphate buffer (pH 7.4). After 24 hours of postfixation at 4 C, brains were moved into 10% glycerol ...
... Hopkins University vivarium until they were 24 months old. For euthanasia, rats were anesthetized with isoflurane and perfused transcardially with sterile saline, followed by 4% paraformaldehyde in phosphate buffer (pH 7.4). After 24 hours of postfixation at 4 C, brains were moved into 10% glycerol ...
Negatively-Correlated Firing - Department of Computer Science
... Understanding the functional meaning of particular aspects of neural architecture is a central objective of computational neuroscience. Inhibitory interneurons are very common in the neocortex, and lateral inhibition has been shown to play an important role in sharpening the distinctions between sim ...
... Understanding the functional meaning of particular aspects of neural architecture is a central objective of computational neuroscience. Inhibitory interneurons are very common in the neocortex, and lateral inhibition has been shown to play an important role in sharpening the distinctions between sim ...
Lecture 2: Structure and function of the NS
... Gross anatomy Cerebral cortex: outermost 6 layered structure of the neural tissue of human and other mammals (2-4 mm). Key role in ...
... Gross anatomy Cerebral cortex: outermost 6 layered structure of the neural tissue of human and other mammals (2-4 mm). Key role in ...