Nerve Regeneration in C. elegans after femtosecond laser axotomy
... dendrite of a neuron that connects the cell body to the sensory ending. Next, we incubated the worm with red fluorescent DiI dye to test the dye uptake through dendrite following axotomy. The unoperated neuron was completely filled with DiI-red fluorescent dye. In the operated neuron, only the dista ...
... dendrite of a neuron that connects the cell body to the sensory ending. Next, we incubated the worm with red fluorescent DiI dye to test the dye uptake through dendrite following axotomy. The unoperated neuron was completely filled with DiI-red fluorescent dye. In the operated neuron, only the dista ...
Gustatory processing is dynamic and distributed Donald B
... Interactions in gustatory responses: II. Between-region interactions In addition to interactions within single areas, interactions between regions also modulate taste responses (see also [39]). Indeed, recent evidence showed that feedback connections between GC and NST modulate NST activity via both ...
... Interactions in gustatory responses: II. Between-region interactions In addition to interactions within single areas, interactions between regions also modulate taste responses (see also [39]). Indeed, recent evidence showed that feedback connections between GC and NST modulate NST activity via both ...
Seeing The Unseen
... Since then, thousands of papers have appeared in the medical literature focusing on this early stage of cognitive disorders. Mayo Clinic investigators authored a review paper in the December 2009 issue of Archives of Neurology summarizing both the progress that has been made in the field of mild cog ...
... Since then, thousands of papers have appeared in the medical literature focusing on this early stage of cognitive disorders. Mayo Clinic investigators authored a review paper in the December 2009 issue of Archives of Neurology summarizing both the progress that has been made in the field of mild cog ...
UNIT II - Elsevier Health
... and the potential difference between the inside and outside of the fiber is measured using an appropriate voltmeter. This voltmeter is a highly sophisticated electronic apparatus that is capable of measuring small voltages despite extremely high resistance to electrical flow through the tip of the m ...
... and the potential difference between the inside and outside of the fiber is measured using an appropriate voltmeter. This voltmeter is a highly sophisticated electronic apparatus that is capable of measuring small voltages despite extremely high resistance to electrical flow through the tip of the m ...
Time course of the development of motor behaviors in the zebrafish
... of stimulation, rather than decline in frequency, as was seen during the spontaneous contractions. By comparing the frequency of contractions during stimulation with the frequency of contractions when not stimulated, the time of onset of touch responses could be determined. Each embryo used in Figur ...
... of stimulation, rather than decline in frequency, as was seen during the spontaneous contractions. By comparing the frequency of contractions during stimulation with the frequency of contractions when not stimulated, the time of onset of touch responses could be determined. Each embryo used in Figur ...
Review of signal distortion through metal microelectrode recording
... Signals were recorded using a MAP system (Plexon Inc., Dallas, TX) in which signals were passed through a first and second amplifier, which we refer to as a head-stage and a preamplifier, respectively, following the convention of the company that constructed it. After the amplifiers, signals are pas ...
... Signals were recorded using a MAP system (Plexon Inc., Dallas, TX) in which signals were passed through a first and second amplifier, which we refer to as a head-stage and a preamplifier, respectively, following the convention of the company that constructed it. After the amplifiers, signals are pas ...
Document
... neurons in a receptor create an internal pattern of nerve impulses that represent the conditions that stimulated it – either inside or outside the body Perception – A process that makes sensory patterns meaningful and more elaborate Copyright © Allyn and Bacon 2006 ...
... neurons in a receptor create an internal pattern of nerve impulses that represent the conditions that stimulated it – either inside or outside the body Perception – A process that makes sensory patterns meaningful and more elaborate Copyright © Allyn and Bacon 2006 ...
NUCLEI-SPECIFIC RESPONSE TO PAIN IN THE BED NUCLEUS OF THE By
... cortex and ACC contribute to negative affective states associated with pain (Figure 2; Johansen et al., 2001; Rainville et al., 1997; Neugebauer et al., 2004). It is well established that primary afferents send noxious-stimulus evoked projections to limbic (amygdala, ACC) and cognitive systems (PFC) ...
... cortex and ACC contribute to negative affective states associated with pain (Figure 2; Johansen et al., 2001; Rainville et al., 1997; Neugebauer et al., 2004). It is well established that primary afferents send noxious-stimulus evoked projections to limbic (amygdala, ACC) and cognitive systems (PFC) ...
Increased prefrontal activity and reduced motor cortex
... system that inhibits muscular activation that one cannot overcome despite maximum volitional effort. During sub-maximum contractions the idea is to reduce muscular activation in order to meet task requirements, and thus should not be used to this purpose. Recently though, Guillot et al. (2007) showe ...
... system that inhibits muscular activation that one cannot overcome despite maximum volitional effort. During sub-maximum contractions the idea is to reduce muscular activation in order to meet task requirements, and thus should not be used to this purpose. Recently though, Guillot et al. (2007) showe ...
Substance P and Cholecystokinin-like lmmunoreactive Varicosities
... content: (1) small cells (< 20 pm in diameter) that contain SPLI alone; (2) small cells that contain both SP-LI and CCK-8LI; (3) intermediate-sized cells (20-45 pm in diameter) that contain CCK-8-LI alone; and (4) intermediate-sized cells that contain both SP-LI and CCK-8-LI. Current work by several ...
... content: (1) small cells (< 20 pm in diameter) that contain SPLI alone; (2) small cells that contain both SP-LI and CCK-8LI; (3) intermediate-sized cells (20-45 pm in diameter) that contain CCK-8-LI alone; and (4) intermediate-sized cells that contain both SP-LI and CCK-8-LI. Current work by several ...
The Resilience of Computationalism - Philsci
... Neural processes are temporally constrained in real time, whereas computations are not; hence, neural processes are not computations (cf. Globus 1992, van Gelder 1998). This objection trades on an ambiguity between mathematical representation of time and real time. True, computations are temporally ...
... Neural processes are temporally constrained in real time, whereas computations are not; hence, neural processes are not computations (cf. Globus 1992, van Gelder 1998). This objection trades on an ambiguity between mathematical representation of time and real time. True, computations are temporally ...
Normalization in human somatosensory cortex
... level (“target ⫹ mask”). In addition, we included separate “maskonly” and “target-only” trials (at 50% of maximum vibration level) for estimating the weights on the forward model (see below). All 12 possible stimuli (5 amplitude levels with mask absent, 5 amplitude conditions with target ⫹ mask, tar ...
... level (“target ⫹ mask”). In addition, we included separate “maskonly” and “target-only” trials (at 50% of maximum vibration level) for estimating the weights on the forward model (see below). All 12 possible stimuli (5 amplitude levels with mask absent, 5 amplitude conditions with target ⫹ mask, tar ...
Chapter 8 The Nervous System
... inside more positive than the outside at the stimulated point; this depolarization is a nerve impulse (action potential) The stimulated section of membrane immediately repolarizes, but by that time, the depolarization has already triggered the next section of membrane to depolarize, thus propagating ...
... inside more positive than the outside at the stimulated point; this depolarization is a nerve impulse (action potential) The stimulated section of membrane immediately repolarizes, but by that time, the depolarization has already triggered the next section of membrane to depolarize, thus propagating ...
The Glia Response after Peripheral Nerve Injury: A Comparison
... neurons are localised in the anterior horn of the spinal cord and dorsal root ganglia (DRG), sensory neurons are localised in the anterior horn of the spinal cord and dorsal root ganglia (DRG), respectively (Figure 1b). Peripheral axons and their associated SCs are surrounded and supported respectiv ...
... neurons are localised in the anterior horn of the spinal cord and dorsal root ganglia (DRG), sensory neurons are localised in the anterior horn of the spinal cord and dorsal root ganglia (DRG), respectively (Figure 1b). Peripheral axons and their associated SCs are surrounded and supported respectiv ...
Chapter 14: Integration of Nervous System Functions
... When a person is blindfolded, why is it difficult to distinguish hot from cold objects? A) A person must be able to see what they are holding in order to perceive temperature. B) Temperatures above 37 degrees centigrade actually stimulate the cold receptors. C) Pain receptors are stimulated by both ...
... When a person is blindfolded, why is it difficult to distinguish hot from cold objects? A) A person must be able to see what they are holding in order to perceive temperature. B) Temperatures above 37 degrees centigrade actually stimulate the cold receptors. C) Pain receptors are stimulated by both ...
Trigeminal Ganglion Cell Processes Are
... pattern to the brainstem trigeminal nuclei occurs along a preexisting, spatially aligned bridge formed by the trigeminal ganglion cells. Primary sensory afferents that connect the periphery to the CNS navigate through a variety of substrates and across considerable distances before contacting target ...
... pattern to the brainstem trigeminal nuclei occurs along a preexisting, spatially aligned bridge formed by the trigeminal ganglion cells. Primary sensory afferents that connect the periphery to the CNS navigate through a variety of substrates and across considerable distances before contacting target ...
Neuronal Clusters in the Primate Motor Cortex during Interception of
... identified previously in human subjects. Single-cell activity was recorded from the arm area of the primary motor cortex in these two animals, and the neurons were classified based on the temporal patterns in their activity, using a nonhierarchical cluster analysis. Results of this analysis revealed ...
... identified previously in human subjects. Single-cell activity was recorded from the arm area of the primary motor cortex in these two animals, and the neurons were classified based on the temporal patterns in their activity, using a nonhierarchical cluster analysis. Results of this analysis revealed ...
Cross-Modal Transfer of Information between the Tactile
... found in the left postcentral gyrus, left superior parietal lobule, and right cerebellum. Finally, fields active in both TV–VV and TV–TT were considered as those involved in cross-modal transfer of information. One field was found, situated in the right insula–claustrum. This region has been shown t ...
... found in the left postcentral gyrus, left superior parietal lobule, and right cerebellum. Finally, fields active in both TV–VV and TV–TT were considered as those involved in cross-modal transfer of information. One field was found, situated in the right insula–claustrum. This region has been shown t ...
I. Pain and the Nervous System
... D. Neurotransmitters and Pain • The neurotransmitters that form the basis for neural transmission also play a role in pain perception. The discovery of the endogenous opiates—enkephalin, endorphin, and dynorphin—led to the discovery of neural receptors specialized for these neurotransmitters and th ...
... D. Neurotransmitters and Pain • The neurotransmitters that form the basis for neural transmission also play a role in pain perception. The discovery of the endogenous opiates—enkephalin, endorphin, and dynorphin—led to the discovery of neural receptors specialized for these neurotransmitters and th ...
An Introduction to Sensory Pathways and the Somatic Nervous System
... • Carry sensations of fast pain, or prickling pain, such as that caused by ...
... • Carry sensations of fast pain, or prickling pain, such as that caused by ...
Slides 7.1 - Bellevue ISD
... Continuation of the Nerve Impulse between Neurons Impulses are able to cross the synapse to another nerve Neurotransmitter is released from a nerve’s axon terminal The dendrite of the next neuron has receptors that are stimulated by the neurotransmitter An action potential is started in the ...
... Continuation of the Nerve Impulse between Neurons Impulses are able to cross the synapse to another nerve Neurotransmitter is released from a nerve’s axon terminal The dendrite of the next neuron has receptors that are stimulated by the neurotransmitter An action potential is started in the ...
UNC-119 suppresses axon branching
... does not contain any well-defined structural motifs, although several proteins that are similar to UNC-119 have been identified in C. elegans, Drosophila melanogaster and vertebrates (Maduro et al., 2000). Two related vertebrate proteins, HRG4 (human UNC119) and RRG4 (rat UNC119), were recently iden ...
... does not contain any well-defined structural motifs, although several proteins that are similar to UNC-119 have been identified in C. elegans, Drosophila melanogaster and vertebrates (Maduro et al., 2000). Two related vertebrate proteins, HRG4 (human UNC119) and RRG4 (rat UNC119), were recently iden ...
Module 2
... How to concern, to what kind of a pain which arise at disease of heart and are localized in the left hand? A. distal B. superficial C. early D. external E. reflex ANSWER: E ...
... How to concern, to what kind of a pain which arise at disease of heart and are localized in the left hand? A. distal B. superficial C. early D. external E. reflex ANSWER: E ...
Microneurography
Microneurography is a neurophysiological method employed by scientists to visualize and record the normal traffic of nerve impulses that are conducted in peripheral nerves of waking human subjects. The method has been successfully employed to reveal functional properties of a number of neural systems, e.g. sensory systems related to touch, pain, and muscle sense as well as sympathetic activity controlling the constriction state of blood vessels. To study nerve impulses of an identified neural system, a fine tungsten needle electrode is inserted into the nerve and connected to a high gain recording amplifier. The exact position of the electrode tip within the nerve is then adjusted in minute steps until the electrode discriminates impulses of the neural system of interest. A unique feature and a significant strength of the microneurography method is that subjects are fully awake and able to cooperate in tests requiring mental attention, while impulses in a representative nerve fibre or set of nerve fibres are recorded, e.g. when cutaneous sense organs are stimulated or subjects perform voluntary precision movements.