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Tyrosine Hydroxylase in the Rat Parabrachial Region: Ultrastructural
Tyrosine Hydroxylase in the Rat Parabrachial Region: Ultrastructural

... ribosomes, and microtubules. The labeled dendrites were most often postsynaptic to 1 unlabeled terminal seen in a single plane of section (Fig. 2A). The unlabeled terminals measured 0.4-1.2 pm, contained mitochondria and numerous flattened or oval s&s, and appeared to form primarily asymmetric densi ...
THE REGULATION OF SLEEP AND WAKEFULNESS BY THE
THE REGULATION OF SLEEP AND WAKEFULNESS BY THE

... regulated by orexins. Orexins also have a strong, direct, excitatory effect on cholinergic neurons of the basal forebrain33), which is hypothesized to play an important role in arousal. Cholinergic neurons of the pedunculopontine tegmental nucleus (PPN) and the laterodorsal tegmental nucleus (LDT) p ...
Lecture notes Neural Computation
Lecture notes Neural Computation

... The brain is a complex computing machine which is evolving to give the “fittest” output to a given input. Neural computation has as goal to describe the function of the nervous system in mathematical terms. By analysing or simulating the resulting equations, one can better understand its function, r ...
Article - Perelman School of Medicine at the University of
Article - Perelman School of Medicine at the University of

... early differentiation step of postmitotic neurons. We next examined how each of the three sequentially born subtypes of CFu neurons is specifically affected by loss of SOX5. Nissl staining shows absence of a morphological SP in Sox5!/! cortex (Figures S1A and S1B). Using the SP-specific marker Ctgf ...
Non-NMDA and NMDA receptors transmit area postrema input to
Non-NMDA and NMDA receptors transmit area postrema input to

... barrels of a five-barreled pipette (39). The recording barrel was filled with 2% Pontamine sky blue dye in 0.5 M sodium acetate. Of the remaining barrels, one contained normal saline for balancing ejection currents. The rest of the barrels contained aqueous solutions of the NMDA receptor agonist NMD ...
Neurotransmission in the rat amygdala related to fear and anxiety
Neurotransmission in the rat amygdala related to fear and anxiety

Phase synchronization of bursting neurons in clustered small
Phase synchronization of bursting neurons in clustered small

... patterns of activation of different brain regions as measured by electroencephalographic (EEG) or neuroimaging methods. The network analysis of these databases have revealed principles of organization of the nervous system which are common across species. For example, the corticocortical connectivit ...
the inferior colliculus of the rat: quantitative
the inferior colliculus of the rat: quantitative

... understand the functional role of inhibition in the rat’s IC and to provide a comparative basis for studies concerned with pathologies of GABA- and Gly-mediated inhibitory transmission such as age-related hearing loss, tinnitus or audiogenic seizures (Caspary et al., 1999; Bauer et al., 2000; Faingo ...
07.11 - UCSD Cognitive Science
07.11 - UCSD Cognitive Science

... used a new approach, retrograde transneuronal transport of herpes simplex virus type 1 (HSV1, McIntyre-B strain). This tracing method can effectively label a chain of up to three synaptically linked neurons in a single experiment (for review, see Strick and Card, 1992). In the present study, we have ...
A Theory of Cerebral Cortex - Temporal Dynamics of Learning Center
A Theory of Cerebral Cortex - Temporal Dynamics of Learning Center

... theory’s explanation for another key aspect of cortical and thalamic function – the moment-by-moment selection, evaluation, and execution of the action commands that control waking brain activity and muscle movement – is also briefly addressed. This theory proposes the first cogent answers to these ...
the superior Olivary complex
the superior Olivary complex

... shape. The spike rate is non-monotonic with sound level and monotonic with modulation depth (Figure 7–10F). A common view of the role of inhibition is that it attenuates or suppresses post-synaptic neural activity. Although this is true for off neurons, the robust discharge when inhibition is releas ...
THE NEUROBIOLOGY OF VISUAL-SACCADIC DECISION MAKING
THE NEUROBIOLOGY OF VISUAL-SACCADIC DECISION MAKING

... action to be executed by the neural and vascular systems of the body. For Aristotle the physiological systems of the body could, in this regard, be divided into sensory and motor divisions, which were causally linked by the nonphysical processes that took place in the human heart. In the second cent ...
Stereological estimation of dendritic coverage in the capybara SCG
Stereological estimation of dendritic coverage in the capybara SCG

... Discussion and Conclusion In the present article we showed how to assess quantitatively the axon-dendritic synapses in capybara SCG. The focus was on synapse size and the size (%) of dendrite occupied by synaptic axon profiles by using a combination of electron-immunohistochemical labelling for syna ...
How the brain uses time to represent and process visual information
How the brain uses time to represent and process visual information

... correlated activity across cells, such as oscillations. We would also like to know how this information corresponds to perceptual qualities, whether a neuron’s performance reflects its ideal information capacity or rather a compromise reflecting the biological costs of achieving this capacity [32], ...
PARK9-Associated ATP13A2 Localizes to Intracellular
PARK9-Associated ATP13A2 Localizes to Intracellular

... ATP13A2 protein levels are increased in human PD/DLB brains To explore the expression of ATP13A2 in the human brain, we conducted Western blot analysis with our LMNR1 antibody on detergent-soluble extracts derived from the striatum and cerebral cortex (medial frontal gyrus) of human brains from norm ...
BDNF-modulated Spatial Organization of Cajal
BDNF-modulated Spatial Organization of Cajal

... cortex with disorganized CR cells and aberrant cortical lamination (Ringstedt et al., 1998). During embryonic development, CR neurons express BDNF and NT4 along with their receptor TrkB (Fukumitsu et al., 1998), whereas GABAergic neurons only express TrkB (Gorba and Wahle, 1999). Both neuronal cell ...
Hypothalamic pathways linking energy balance and reproduction
Hypothalamic pathways linking energy balance and reproduction

... Although LepRs are expressed in many hypothalamic nuclei (34, 36, 65), significant attention has been given to neurons located in the arcuate nucleus. There, LepRs are expressed by both NPY/AgRP and POMC/CART neurons (7, 20, 34) and are required for maintaining a normal body weight (4, 67). It is im ...
RESOURCE - Synthetic Neurobiology Group
RESOURCE - Synthetic Neurobiology Group

... specific photoactivation of parvalbumin-positive interneurons in behaving ChR2-EYFP reporter mice. The robust, consistent and inducible nature of our ChR2 mice represents a significant advance over previous lines, and the Arch-ER2 and eNpHR3.0 mice are to our knowledge the first demonstration of suc ...
Optimal Sizes of Dendritic and Axonal Arbors
Optimal Sizes of Dendritic and Axonal Arbors

... is scarce. At the same time neuroanatomists possess much data on cellular morphology and have powerful techniques to image neuronal shapes. This suggests using morphological data to infer inter-neuronal connections. Such inference must rely on rules which relate shapes of neurons to their connectivi ...
Canonical computations of cerebral cortex
Canonical computations of cerebral cortex

... to replicate, as it is not easily captured by rules. A similar interaction between high-level objects and varying lowlevel implementations is seen in motor planning: for example, an intention to point to an object might be instantiated with various fingers of either hand and various arm configuratio ...
Rostral Fastigial Nucleus Activity in the Alert Monkey During Three
Rostral Fastigial Nucleus Activity in the Alert Monkey During Three

... 1997. The fastigial nucleus (FN) receives vestibular information predominantly from Purkinje cells of the vermis. FN in the monkey can be divided in a rostral part, related to spinal mechanisms, and a caudal part with oculomotor functions. To understand the role of FN during movements in space, sing ...
(Full text - MSWord file 171K)
(Full text - MSWord file 171K)

... been developed in recent years. Prominent in these are actor-critic models of basal ganglia functioning which build on the strong resemblance between dopamine neuron activity and the temporal difference prediction error signal in the critic, and between dopamine-dependent long-term synaptic plastici ...
Histamine neurons in the tuberomamillary nucleus: a whole center
Histamine neurons in the tuberomamillary nucleus: a whole center

... However, perfusion of the posterior hypothalamus with mAEA did not change significantly histamine release from the perirhinal cortex (Passani et al., 2007; Table 1) despite the profuse histaminergic innervation of this region (Panula et al., 1989) and the presence of histaminergic receptors (Pillot ...
Shootin1 - The Journal of Cell Biology
Shootin1 - The Journal of Cell Biology

Coding of relative size in monkey inferotemporal cortex
Coding of relative size in monkey inferotemporal cortex

... Submitted 13 November 2014; accepted in final form 9 January 2015 ...
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Mirror neuron

A mirror neuron is a neuron that fires both when an animal acts and when the animal observes the same action performed by another. Thus, the neuron ""mirrors"" the behavior of the other, as though the observer were itself acting. Such neurons have been directly observed in primate species. Birds have been shown to have imitative resonance behaviors and neurological evidence suggests the presence of some form of mirroring system. In humans, brain activity consistent with that of mirror neurons has been found in the premotor cortex, the supplementary motor area, the primary somatosensory cortex and the inferior parietal cortex.The function of the mirror system is a subject of much speculation. Many researchers in cognitive neuroscience and cognitive psychology consider that this system provides the physiological mechanism for the perception/action coupling (see the common coding theory). They argue that mirror neurons may be important for understanding the actions of other people, and for learning new skills by imitation. Some researchers also speculate that mirror systems may simulate observed actions, and thus contribute to theory of mind skills, while others relate mirror neurons to language abilities. Neuroscientists such as Marco Iacoboni (UCLA) have argued that mirror neuron systems in the human brain help us understand the actions and intentions of other people. In a study published in March 2005 Iacoboni and his colleagues reported that mirror neurons could discern if another person who was picking up a cup of tea planned to drink from it or clear it from the table. In addition, Iacoboni has argued that mirror neurons are the neural basis of the human capacity for emotions such as empathy.It has also been proposed that problems with the mirror neuron system may underlie cognitive disorders, particularly autism. However the connection between mirror neuron dysfunction and autism is tentative and it remains to be seen how mirror neurons may be related to many of the important characteristics of autism.Despite the excitement generated by these findings, to date, no widely accepted neural or computational models have been put forward to describe how mirror neuron activity supports cognitive functions such as imitation. There are neuroscientists who caution that the claims being made for the role of mirror neurons are not supported by adequate research.
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