Stress induces atrophy of apical dendrites of hippocampal CA3
... effects on pyramidal neurons in the CA3 region. For example, treatment of young adult rats with daily injections of corticosterone over 3 weeks induces atrophy of the apical dendrites of CA3 pyramidal neurons 2t, whereas 12 weeks of daily corticosterone injections results in loss of CA3 pyramidal ne ...
... effects on pyramidal neurons in the CA3 region. For example, treatment of young adult rats with daily injections of corticosterone over 3 weeks induces atrophy of the apical dendrites of CA3 pyramidal neurons 2t, whereas 12 weeks of daily corticosterone injections results in loss of CA3 pyramidal ne ...
Soghomonian J.J., Sethares C., and Peters, A
... axodendritic synapses are lost from the neuropil of layer 2/3 in prefrontal area 46 with age (Peters et al., 2008). Whether there is a similar loss of inhibitory axosomatic synapses from this cortex has not been determined, but a study in primate motor cortex suggests that axosomatic synapses are no ...
... axodendritic synapses are lost from the neuropil of layer 2/3 in prefrontal area 46 with age (Peters et al., 2008). Whether there is a similar loss of inhibitory axosomatic synapses from this cortex has not been determined, but a study in primate motor cortex suggests that axosomatic synapses are no ...
Sensory modalities are not separate modalities: plasticity and
... Cross-modal plasticity has also been reported in humans that have had sensory deprivation in early life [7–13]. The typical finding in these studies has been that sensory deprivation in one modality starting from an early period of life causes the cortical area that is normally devoted to that modal ...
... Cross-modal plasticity has also been reported in humans that have had sensory deprivation in early life [7–13]. The typical finding in these studies has been that sensory deprivation in one modality starting from an early period of life causes the cortical area that is normally devoted to that modal ...
The Human Mirror Neuron System and Embodied
... These studies revealed two distinct classes of neurons: canonical neurons and mirror neurons. Canonical neurons are primarily found along the posterior bank of the arcuate sulcus (F5ab) and are associated with the execution of motor actions. They also respond when the animal is presented with graspa ...
... These studies revealed two distinct classes of neurons: canonical neurons and mirror neurons. Canonical neurons are primarily found along the posterior bank of the arcuate sulcus (F5ab) and are associated with the execution of motor actions. They also respond when the animal is presented with graspa ...
Thyroid hormone exerts site-specific effects on SRC
... of means revealed that T4-treated animals exhibited significantly lower body weights. These effects were not observed in dams sacrificed on G16. Film analysis following the in situ hybridization revealed that manipulation of maternal thyroid status did not significantly affect the abundance of SRC-1 ...
... of means revealed that T4-treated animals exhibited significantly lower body weights. These effects were not observed in dams sacrificed on G16. Film analysis following the in situ hybridization revealed that manipulation of maternal thyroid status did not significantly affect the abundance of SRC-1 ...
- Orange Coast College
... 31 pairs grouped into 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and l coccygeal. Mixed nerve that separates near the attachment of the nerve to spinal cord. ...
... 31 pairs grouped into 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and l coccygeal. Mixed nerve that separates near the attachment of the nerve to spinal cord. ...
Lecture 3 Figure 1
... may produce a transient gaze palsy in which the eyes deviate toward the lesioned side and away from the side of the hemiplegia. In addition to a contralateral hemiplegia, common cranial nerve findings in capsular lesions may include 1) deviation of the tongue toward the side of the weakness and away ...
... may produce a transient gaze palsy in which the eyes deviate toward the lesioned side and away from the side of the hemiplegia. In addition to a contralateral hemiplegia, common cranial nerve findings in capsular lesions may include 1) deviation of the tongue toward the side of the weakness and away ...
Deep transcranial magnetic stimulation over the prefrontal cortex
... higher stimulation intensities are needed, as the electric field decreases rapidly as a function of tissue depth. However, even if stimulation intensities could be highly increased at the source, the use of standard TMS coils (such as the figure-8 coil) at such high stimulation intensities does not ...
... higher stimulation intensities are needed, as the electric field decreases rapidly as a function of tissue depth. However, even if stimulation intensities could be highly increased at the source, the use of standard TMS coils (such as the figure-8 coil) at such high stimulation intensities does not ...
Chapter 17 Intrinsic Optical Signal Imaging of Normal and Abnormal
... with a high enough frequency, or transition to an ictal event, then the increase in Hbr persists and a localized BOLD signal is not observed (Fig. 17.8). There are several implications to this discovery. First, it directly contradicts most fMRI studies of epileptiform events, which have generally s ...
... with a high enough frequency, or transition to an ictal event, then the increase in Hbr persists and a localized BOLD signal is not observed (Fig. 17.8). There are several implications to this discovery. First, it directly contradicts most fMRI studies of epileptiform events, which have generally s ...
Neural integration
... At spinal segment it targets, an axon in anterior corticospinal tract crosses over to opposite side of spinal cord in anterior white commissure before synapsing on lower motor neurons in anterior gray horns ...
... At spinal segment it targets, an axon in anterior corticospinal tract crosses over to opposite side of spinal cord in anterior white commissure before synapsing on lower motor neurons in anterior gray horns ...
Institute of Psychology C.N.R.
... We have already described some simulations using such a model of development for neural networks [Nolfi and Parisi, in press]. However, in that work the environment had no role in the developmental changes that occurred in the individual under genetic control. In the present model the genetic materi ...
... We have already described some simulations using such a model of development for neural networks [Nolfi and Parisi, in press]. However, in that work the environment had no role in the developmental changes that occurred in the individual under genetic control. In the present model the genetic materi ...
PREFERENTIAL POTENTIATION OF WEAKER INPUTS TO PRIMARY
... A thesis submitted to the Centre for Neuroscience Studies In conformity with the requirements for the degree of Master of Science ...
... A thesis submitted to the Centre for Neuroscience Studies In conformity with the requirements for the degree of Master of Science ...
Linking Cognitive Neuroscience and Molecular Genetics: New Perspectives from Williams... Ursula Bellugi and Marie St. George (Eds.)
... subjects, indicating that auditory hyperexcitability does not occur at the brainstem level. However, data from an auditory recovery paradigm suggest a possible cortical mechanism; WMS subjects are indistinguishable from normal controls on a visual recovery paradigm. Taken together, these studies sug ...
... subjects, indicating that auditory hyperexcitability does not occur at the brainstem level. However, data from an auditory recovery paradigm suggest a possible cortical mechanism; WMS subjects are indistinguishable from normal controls on a visual recovery paradigm. Taken together, these studies sug ...
The Role of Dopamine in Locomotor ... 173
... er, these findings indicate considerable need for establishing the behavioral functions of DA. This article contains a review of the behavioral studies that provide clues to the function of DA; it wilt be shown that the results suggest a specific role for DA neurons in locomotor activity and particu ...
... er, these findings indicate considerable need for establishing the behavioral functions of DA. This article contains a review of the behavioral studies that provide clues to the function of DA; it wilt be shown that the results suggest a specific role for DA neurons in locomotor activity and particu ...
Computational Constraints that may have Favoured the Lamination
... a layer of granule cells sandwiched between two layers of pyramidal cells. The functional significance of this major qualitative step in evolution, which likely appeared at the transition from reptiles to mammals and was retained ever since, remains mysterious. Neuroscientists have speculated about ...
... a layer of granule cells sandwiched between two layers of pyramidal cells. The functional significance of this major qualitative step in evolution, which likely appeared at the transition from reptiles to mammals and was retained ever since, remains mysterious. Neuroscientists have speculated about ...
Does Mental Activity Change the Oxidative Metabolism of the Brain?
... physiological stimulation on rCMR0, and rCBF. Theseauthors then demonstratedthat vibration of the contralateral index finger provoked a 30% increaseof rCBF in the sensoryhand area, which was not accompaniedby any statistically significant increaseof rCMR0,. This uncoupling betweenrCMR0, and rCBF was ...
... physiological stimulation on rCMR0, and rCBF. Theseauthors then demonstratedthat vibration of the contralateral index finger provoked a 30% increaseof rCBF in the sensoryhand area, which was not accompaniedby any statistically significant increaseof rCMR0,. This uncoupling betweenrCMR0, and rCBF was ...
Basal Forebrain Projections to Somatosensory Cortex in
... It is well documented that the cortical representation of the body surface can be modified by manipulations of the sensory periphery in adult mammals including cats (Kalaska and Pomerantz 1979), raccoons (Rasmusson 1982; Rasmusson and Turnball 1983), rats (Wall and Cusick 1984), and monkeys (Merzeni ...
... It is well documented that the cortical representation of the body surface can be modified by manipulations of the sensory periphery in adult mammals including cats (Kalaska and Pomerantz 1979), raccoons (Rasmusson 1982; Rasmusson and Turnball 1983), rats (Wall and Cusick 1984), and monkeys (Merzeni ...
Cerebellar Affective Syndrome Expanding Our Thinking About the
... Studies by Neau (Acta Neurol Scand, 2000) and others showed deficits in EF, spatial cognition, attention, and some language tasks Single case reports have shown pts with right cerebellar infarct develop impairments of linguistic processing including agrammatism and decreased verbal fluency. ...
... Studies by Neau (Acta Neurol Scand, 2000) and others showed deficits in EF, spatial cognition, attention, and some language tasks Single case reports have shown pts with right cerebellar infarct develop impairments of linguistic processing including agrammatism and decreased verbal fluency. ...
MODULE 4: MOTOR AND SOMATOSENSORY PATHWAYS
... spinothalamic tract and other anterolateral pathways, somatosensory cortex, central modulation of pain, and the thalamus. The key clinical concepts will include paresthesias, spinal cord lesions, sensory loss, patterns and localization, spinal cord syndromes. The book will provide the details of the ...
... spinothalamic tract and other anterolateral pathways, somatosensory cortex, central modulation of pain, and the thalamus. The key clinical concepts will include paresthesias, spinal cord lesions, sensory loss, patterns and localization, spinal cord syndromes. The book will provide the details of the ...
Original Article Female Rat Hippocampal Cell
... Golestan University of Medical Sciences, Gorgan, Iran Abstract. The hippocampus is important for learning tasks, such as conditioned place preference (CPP), which is widely used as a model for studying the reinforcing effects of drugs with dependence liability. Long-term opiate use may produce malad ...
... Golestan University of Medical Sciences, Gorgan, Iran Abstract. The hippocampus is important for learning tasks, such as conditioned place preference (CPP), which is widely used as a model for studying the reinforcing effects of drugs with dependence liability. Long-term opiate use may produce malad ...
Lecture 08
... How neural activity causes changes in synaptic weights? How long can these changes of synaptic weights last? How many memories we can store in one neural network? What is forgetting and how it happens? ...
... How neural activity causes changes in synaptic weights? How long can these changes of synaptic weights last? How many memories we can store in one neural network? What is forgetting and how it happens? ...
Hypocretinergic Neurons are Primarily involved in Activation
... Therefore, the hypocretinergic system is well positioned to initiate, maintain and facilitate motor activity by operating directly on motoneurons and/or by modifying the activity of supraspinal systems that are involved in motor functions. A recent study in rats suggested that the activity of the hy ...
... Therefore, the hypocretinergic system is well positioned to initiate, maintain and facilitate motor activity by operating directly on motoneurons and/or by modifying the activity of supraspinal systems that are involved in motor functions. A recent study in rats suggested that the activity of the hy ...
Effect of pH on Metabolism and Ultrastructure of Guinea Pig
... density (fig. 4). Other mitochondria show generalized swelling up to two or three times normal size with a greatly decreased density of the matrix (fig. 5). From pH 7.0 to pH 6.2, swelling of cells and processes is progressively more severe, and at the latter value the tissue is so disrupted as to b ...
... density (fig. 4). Other mitochondria show generalized swelling up to two or three times normal size with a greatly decreased density of the matrix (fig. 5). From pH 7.0 to pH 6.2, swelling of cells and processes is progressively more severe, and at the latter value the tissue is so disrupted as to b ...
Discussion and future directions
... integration of firing rate input received from a large number of neurons, to the detection of coincident spike arrivals (see also experimental evidence for neurons acting in different computational modes in Destexhe and Pare, 1999). Hence, we can describe the existence of two main classes of neurons ...
... integration of firing rate input received from a large number of neurons, to the detection of coincident spike arrivals (see also experimental evidence for neurons acting in different computational modes in Destexhe and Pare, 1999). Hence, we can describe the existence of two main classes of neurons ...
The Distribution of Immunoreactivity for
... estrogen (ER) and androgen receptors (AR) maintain. While clearly more abundant, however, less is known about the cortical distribution of intracellular AR as compared with ER proteins. Available evidence suggests, though, that at least in rats these two hormone pathways occupy distinct niches among ...
... estrogen (ER) and androgen receptors (AR) maintain. While clearly more abundant, however, less is known about the cortical distribution of intracellular AR as compared with ER proteins. Available evidence suggests, though, that at least in rats these two hormone pathways occupy distinct niches among ...