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| | somatosensory cortex (primary somesthetic area, general sensory area) |
 | | Age-related alteration of the forepaw representation in the rat primary somatosensory cortex. | | | Comparison of synaptic changes in the precentral and postcentral cerebral cortex of aging humans: a quantitative ultrastructural study. | | | Development of dendritic spines in the cerebral cortex of the micrencephalic rat following prenatal X-irradiation. |
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http://www.arclab.org/node_pages/1352.html
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| | Neurological Research: Motor cortex stimualation in patients with post-stroke pain: Conscious somatosensory response ... |
| | Unpleasant painful sensation was induced or their original pain was exacerbated in 12 patients (39%) when the somatosensory cortex was stimulated and in two (6%) when the motor cortex was stimulated. | | | During surgery for electrode placement, a sensory response (tingle projected to a localized peripheral area) was elicited by high-frequency stimulation (50 Hz) in 23 (84%) from the somatosensory cortex, and in 16 (52%) from the motor cortex without muscle contraction. | | | High-frequency stimulation of the motor cortex also produced a sensory response in 16 (52%) of the poststroke pain patients at intensities which did not induce muscle contraction (Table 1). |
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http://www.findarticles.com/p/articles/mi_qa3909/is_200303/ai_n9227956
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| | Neuronal correlates of decision-making in secondary somatosensory cortex - Nature Neuroscience |
| | Neuronal correlates of decision-making in secondary somatosensory cortex | | | Preuss, T.M. and Goldman-Rakic, P.S. Connections of the ventral granular frontal cortex of macaques with perisylvian premotor and somatosensory areas: anatomical evidence for somatic representation in primate frontal association cortex. | | | Dependence on f1 during the second stimulus period could, in theory, be simply due to passive adaptation to the first stimulus, potentially as early in the somatosensory pathways as the skin mechanoreceptors. |
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http://www.nature.com/neuro/journal/v5/n11/full/nn950.html
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| | Arnold L. Towe's Legacy |
| | Response of somatosensory cerebral neurons to stimulation of dorsal and dorsolateral spinal funiculi. | | | The single-neuron data have been (and more will be) posted here as a resource for others who are interested in modeling the dynamic behavior of neuronal circuits. | | | A triple representation of the body surface in the sensorimotor cortex of the squirrel monkey. |
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http://oto.wustl.edu/bbears/arnie
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| | Barrels Web: Introduction |
| | In addition to supporting the "one barrel-one vibrissa" hypothesis, the neonatal whisker ablation study suggested that the structural and functional development of the somatosensory cortex was strongly influenced by the sensory periphery. | | | The hypothesis was based in part on work performed by Woolsey several years earlier as a medical student, in which surface evoked potential recording techniques, perfected during the 1930's and 1940's by Dr. Clinton Woosley, Thomas’ father, were used to define the cortical maps representing visual, auditory and somatic sensory peripheries in the mouse. | | | The discovery of cortical barrels and the early work that it inspired defined a number of key issues that have become the focus of subsequent, intense investigation. |
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http://www.neurobio.pitt.edu/barrels/intro.htm
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| | Running head: PHASE RELATIONSHIPS IN BARREL CORTEX |
| | In the second experiment, the role of cortical barrels in the discrimination of the frequency of vibrissal oscillation was evaluated using a similar conditioned suppression technique. | | | These results demonstrate that responses among populations of neurons in the striate cortex are plastic and subject to change as a result of learning. | | | and Fiorentini, A. The visual cortex as a spatial frequency analyzer. |
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http://www.arches.uga.edu/~anackley/thesis2.htm
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| | Somatosensory system - Wikipedia, the free encyclopedia |
| | Somatic sensation consists of the various sensory receptors that trigger the experiences labelled as touch or pressure, temperature (warm or cold), pain (including itch and tickle), and the sensations of muscle movement and joint position including posture, movement, and facial expression (collectively also called proprioception). | | | Organic senses have to do with sensory information from the organs, such as stomach aches. | | | The somatosensory system is the sensory system of somatic sensation. |
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http://en.wikipedia.org/wiki/Somatosensory_system
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| | Basic Somatosensory Pathway |
| | The somatosensory system includes multiple types of sensation from the body - light touch, pain, pressure, temperature, and joint and muscle position sense (also called proprioception). | | | The thalamocortical afferents (from thalamus to cortex) travel up through the internal capsule to get to primary somatosensory cortex, the end of the pathway. | | | The system that is carried in the spinal cord includes the entire body from the neck down; face information is carried by cranial nerves, and we will come back to it later. |
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http://thalamus.wustl.edu/course/bassens.html
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| | UNC BME -- Faculty (Oleg Favorov) |
| | Favorov, O.V. and Kelly, D.G. (1996) Stimulus-response diversity in local neuronal populations of the cerebral cortex. | | | Neural bases of perception, with special emphasis on the relationship between patterns of neuroelectrical activity in the somatosensory cerebral cortex and tactile perception | | | Favorov, O.V., and Kelly, D.G. (2002) Somatosensory system. |
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http://www.bme.unc.edu/directory/faculty/favorov.html
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| | Activation of ventrolateral somatosensory cortex for tactile pattern discrimination using Whole |
| | This ventrolateral somatosensory “what” pathway has been proposed to pass from SI to SII to temporal and limbic areas. | | | Although anatomical and behavioral studies have indicated that an analogous “what” pathway exists in the cortical somatosensory system, this hypothesis has not been tested in healthy individuals. | | | Our results show strong evidence for a modality-specific ventrolateral pathway in the somatosensory system associated with tactile pattern recognition. |
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http://www.du.edu/~creed/activation_ventrolater.htm
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| | UNC BME -- Faculty (Mark A. Tommerdahl) |
| | The primary goal is to use these different methodologies to study the response of the somatosensory cortex to tactile stimulation and more specifically, it is to analyze the contributions of the effects of prior stimulation (or the cortical history) on the responsivity of the cortex. | | | Whitsel, B.L. Favorov, O.V., Tommerdahl, M., Diamond, M.E., Juliano, S.J. and Kelly, D.G. Dynamic Processes Governing the Somatosensory Cortical Response to Natural Stimulation. | | | Whitsel, B.L., Favorov, O., Kelly, D.G. and Tommerdahl, M. Mechanisms of dynamic peri- and intracolumnar interactions in somatosensory cortex: stimulus specific contrast enhancement by NMDA receptor activation. |
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http://www.bme.unc.edu/directory/faculty/tommerdahl.html
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| | How long before superintelligence? |
| | It could be something as trivial as that our cortex is provided with a low-level "drive" to learn about abstract relationships whereas dolphins and whales are programmed not to care about or pay much attention to such things (which might be totally irrelevant to them in their natural environment). | | | More likely, there are some structural developments in the human cortex that other animals lack and that are necessary for advanced abstract thinking. | | | In fact, the human neocortex seems to start out as a fairly flexible and general-purpose mechanism; specific modules arise later through self-organizing and through interacting with the environment. |
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http://www.nickbostrom.com/superintelligence.html
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| | Neuroscience for Kids - Brain Size |
| | However, the body is NOT represented in the cortex in proportion to the amount of skin. | | | After stimulating the cortex of patients undergoing brain surgery for | | | As you can see in this figure above, even though the arms and trunk make up most of your body, they are not given much cortical tissue. |
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http://faculty.washington.edu/chudler/brainsize.html
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| | Publications |
| | Alloway KD, Crist JE, Mutic JJ, Roy SA (1999) Corticostriatal projections from rat barrel cortex have an anisotropic organization that correlates with vibrissal whisking behavior. | | | Rebec GV, Centore JM, White LW, Alloway KD (1985) Ascorbic acid and the behavioral response to haloperidol: Implications for the action of antipsychotic drugs. | | | Alloway KD, Wallace MB, Johnson MJ (1994) Cross-correlation analysis of cuneothalamic interactions in the rat somatosensory system: Influence of receptive field topography and comparisons with thalamocortical interactions. |
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http://www.hmc.psu.edu/neuralcircuits/publicat.htm
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| | Lecture 20 |
| | Somatosensory system provides information about more than one modality, several kinds of receptors providing information mediating varied skin sensations including touch, hot, cold, and pain | | | Corresponding functional differences, lemniscal pathway deals with information that may require quick action, information from skin mechanoreceptors and proprioceptors, spinothalamic information less urgent, such as heat, cold, and some kinds of pain | | | Both pathways involve crossed projection to opposite cortex |
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http://soma.npa.uiuc.edu/courses/bio303/Ch14.html
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| | Brain and Sensory Systems |
| | CNS sensory centers (emphasis on thalamus and sensory areas of cerebral cortex) | | | What does sensory processing in the cerebral cortex do for us that sensory | | | What does this say about our sense of touch in these parts of the body? |
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http://www.indiana.edu/~phys215/lecture/lecnotes/chap108N.html
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| | Corticotectal and corticothalamic efferent projections of SIV somatosensory cortex in cat. |
| | In contrast to the substantial corticotectal projection from SIV and adjacent tissue, there was no unequivocal evidence for a corticotectal projection from traditional somatosensory cortex SI-SIII. | | | Apparently there is a fundamental species difference in the organization of descending somatosensory pathways. | | | These data are in contrast to demonstrations by other investigators that there is a corticotectal projection from SI cortex in rodents. |
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http://www.aegis.com/aidsline/1984/feb/M8420023.html
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| | MRRC, UPMC Health System, Pittsburgh, PA, USA: Stuart WG Derbyshire, MD |
| | Somatosensory and Frontal Cortical Processing During Pain Experience. | | | PET Imaging of Pain Related Somatosensory Cortical Activity. | | | Jones AKP, Derbyshire SWG, Reduced cortical responses to noxious heat in patients with rheumatoid arthritis RA. |
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http://www.mrctr.upmc.edu/people/derby.html
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| | Activation-flow coupling in the rat somatosensory cortex |
| | It is hoped from this animal model that a greater understanding of AFC will provide further insight into the basis of functional neuroimaging techniques that use regional CBF changes as surrogate marker for neuronal activity. | | | of Pennsylvania - Electronic Dissertations > Activation-flow coupling in the rat somatosensory cortex |
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http://repository.upenn.edu/dissertations/AAI9976395
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| | APStracts 10:0046J, 2003. |
| | Auditory conditioning (associative learning) or focal electric stimulation of the primary auditory cortex (AC) evokes reorganization (plasticity) of the cochleotopic (frequency) map of the inferior colliculus (IC) as well as that of the AC. | | | (2) Collicular and cortical plasticity evoked by AC stimulation is augmented by somatosensory cortical stimulation mimicking fear conditioning. | | | (3) Collicular and cortical plasticity evoked by both AC and basal forebrain stimulations is further augmented by somatosensory cortical stimulation. |
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http://www.uth.tmc.edu/apstracts/2003/jn/March/46j.html
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| | Immediate and chronic changes in responses of somatosensory cortex in adult flying-fox after digit amputation |
| | Immediate and chronic changes in responses of somatosensory cortex in adult flying-fox after digit amputation | | | The immediate response is interpreted as a removal of inhibition and the subsequent shrinking of the field may be due to re-establishment of the inhibitory balance in the affected cortex and its inputs. | | | The area of cortex that would normally respond to stimulation of the missing input can become responsive to inputs from other parts of the body surface. |
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http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v332/n6163/abs/332446a0.html
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| | Somatosensory pathways - Body |
| | Some proprioception also travels in the dorsal columns, and follows the medial lemniscus all the way to the cortex, so there is conscious awareness of body position and movement. | | | The pain and temperature system, although it does ascend to somatosensory cortex, also has multiple targets in the brainstem and other areas. | | | There are three different categories (modalities) of the somatosensory system. |
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http://thalamus.wustl.edu/course/body.html
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| | Early motor activity drives spindle bursts in the developing somatosensory cortex. |
| | In the visual system, interactions between spontaneous network patterns and afferent activity have been suggested to be vital for normal development. | | | Although several intrinsic cortical patterns of correlated neuronal activity have been described in developing somatosensory cortex in vitro, the in vivo patterns in the critical developmental period and the influence of physiological sensory inputs on these patterns remain unknown. | | | How these various processes cooperate to allow the somatosensory system to form a three-dimensional representation of the body is not known. |
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http://www.arclab.org/medlineupdates/abstract_15592414.html
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| | Institute of Medical Psychology and Behavioral Neurobiology: Publications |
| | Godde, B., Berkefeld, T., David-Jürgens, M. & Dinse, H. Age-related changes in primary somatosensory cortex of rats: evidence for parallel degenerative and plastic-adaptive processes. | | | Braun, C., Flor, H., Birbaumer, N., and Elbert, T. Changes of the functional organization of the somatosensory cortex in chronic pain patients. | | | Mathiak, K., Hertrich, I., Lutzenberger, W. and Ackermann, H. Preattentive processing of consonant vowel syllables at the level of the supratemporal plane: a whole-head magnetencephalography study. |
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http://www.uni-tuebingen.de/medizinischepsychologie/publicat.htm
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| | The Georgiana Institute Web Page - text only page |
| | This mechanism may be a possible explanation for AIT. | | | The somatosensory cortex of monkeys has been mapped and it has been determined that each finger on the monkey's hand has a specific area in the brain which receives sensory input from it. | | | When a specific frequency is filtered, the auditory cortex may reorganize. |
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http://www.georgianainstitute.org/text.htm
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| | Ventrolateral and dorsomedial somatosensory association cortex damage produces distinct somesthetic syndromes in humans ... |
| | Five somatosensory cortices have distinctive somatotopic representations, cytoarchitecture, and connectivity: primary somatosensory cortex (SI), ventrolateral association cortices (SII, SIII, and SIV), and dorsomedial association cortex (supplementary sensory area). | | | Dorsomedial lesions acutely caused severe disruption of somesthetic processing and severe apraxia when the area of damage was extensive and involved anterior and posterior cortices. | | | Ventrolateral and dorsomedial somatosensory association cortex damage produces distinct somesthetic syndromes in humans [see comments] |
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http://www.aegis.com/aidsline/1993/jul/M9370573.html
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| | CJNS - Large Unresponsive Zones Appear in Cat Somatosensory Cortex Immediately After Ulnar Nerve Cut |
| | New responses, when observed, were evoked by stimulation of a region of skin adjacent to the region served by the ulnar nerve. | | | Abstract: The organization of the primary somatosensory cortex innervated by the ulnar nerve was studied before and immediately after ulnar nerve transection in 11 cats electrophysiologically mapped under Nembutal or Ketamine anesthesia. | | | These findings suggest that the immediate response to deafferentation of somatosensory cortex is a limited acquisition of novel responses restricted to a region immediately adjacent to cortex containing normal afferent input. |
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http://www.cjns.org/21augtoc/large.htm
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| | New Page 1 |
| | Structural and Functional Analyses of Human Cerebral Cortex, J Neurosci, 17, 7079-7102) | | | cells fire to somatosensory stimulation of contralateral arm | | | Van Essen's deformation of monkey visual areas onto human cortical surface |
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http://defiant.ssc.uwo.ca/Jody_web/fMRI4Dummies/monkey_brain_areas.htm
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| | Find in a Library: Somesthesis and the neurobiology of the somatosensory cortex |
| | WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries. | | | Somesthesis and the neurobiology of the somatosensory cortex | | | Find in a Library: Somesthesis and the neurobiology of the somatosensory cortex |
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http://worldcatlibraries.org/wcpa/ow/07cc1f2094026e27a19afeb4da09e526.html
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