Electromagnetic Field and TGF-Β Enhance the Compensatory
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Auditory System & Hearing
Auditory System & Hearing Chapters 9 part II Lecture 17 Jonathan Pillow Sensation & Perception (PSY 345 / NEU 325) Fall 2017 1 Cochlea: physical device tuned to frequency! • place code: tuning of different parts of the cochlea to different frequencies 2 The auditory nerve (AN): fibers stimulated by inner hair cells • Frequency selectivity: Clearest when sounds are very faint 3 Threshold tuning curves for 6 neurons (threshold = lowest intensity that will give rise to a response) Characteristic frequency - frequency to which the neuron is most sensitive threshold(dB) frequency (kHz) 4 Information flow in the auditory pathway • Cochlear nucleus: first brain stem nucleus at which afferent auditory nerve fibers synapse • Superior olive: brainstem region thalamus MGN in the auditory pathway where inputs from both ears converge • Inferior colliculus: midbrain nucleus in the auditory pathway • Medial geniculate nucleus (MGN): part of the thalamus that relays auditory signals to the cortex 5 • Primary auditory cortex (A1): First cortical area for processing audition (in temporal lobe) • Belt & Parabelt areas: areas beyond A1, where neurons respond to more complex characteristics of sounds 6 Basic Structure of the Mammalian Auditory System Comparing overall structure of auditory and visual systems: • Auditory system: Large proportion of processing before A1 • Visual system: Large proportion of processing after V1 7 Basic Structure of the Mammalian Auditory System Tonotopic organization: neurons organized spatially in order of preferred frequency • -
Spike-Based Bayesian-Hebbian Learning in Cortical and Subcortical Microcircuits
Spike-Based Bayesian-Hebbian Learning in Cortical and Subcortical Microcircuits PHILIP J. TULLY Doctoral Thesis Stockholm, Sweden 2017 TRITA-CSC-A-2017:11 ISSN 1653-5723 KTH School of Computer Science and Communication ISRN-KTH/CSC/A-17/11-SE SE-100 44 Stockholm ISBN 978-91-7729-351-4 SWEDEN Akademisk avhandling som med tillstånd av Kungl Tekniska högskolan framläg- ges till offentlig granskning för avläggande av teknologie doktorsexamen i datalogi tisdagen den 9 maj 2017 klockan 13.00 i F3, Lindstedtsvägen 26, Kungl Tekniska högskolan, Valhallavägen 79, Stockholm. © Philip J. Tully, May 2017 Tryck: Universitetsservice US AB iii Abstract Cortical and subcortical microcircuits are continuously modified throughout life. Despite ongoing changes these networks stubbornly maintain their functions, which persist although destabilizing synaptic and nonsynaptic mechanisms should osten- sibly propel them towards runaway excitation or quiescence. What dynamical phe- nomena exist to act together to balance such learning with information processing? What types of activity patterns do they underpin, and how do these patterns relate to our perceptual experiences? What enables learning and memory operations to occur despite such massive and constant neural reorganization? Progress towards answering many of these questions can be pursued through large- scale neuronal simulations. Inspiring some of the most seminal neuroscience exper- iments, theoretical models provide insights that demystify experimental measure- ments and even inform new experiments. In this thesis, a Hebbian learning rule for spiking neurons inspired by statistical inference is introduced. The spike-based version of the Bayesian Confidence Propagation Neural Network (BCPNN) learning rule involves changes in both synaptic strengths and intrinsic neuronal currents. -
Sensory Change Following Motor Learning
A. M. Green, C. E. Chapman, J. F. Kalaska and F. Lepore (Eds.) Progress in Brain Research, Vol. 191 ISSN: 0079-6123 Copyright Ó 2011 Elsevier B.V. All rights reserved. CHAPTER 2 Sensory change following motor learning { k { { Andrew A. G. Mattar , Sazzad M. Nasir , Mohammad Darainy , and { } David J. Ostry , ,* { Department of Psychology, McGill University, Montréal, Québec, Canada { Shahed University, Tehran, Iran } Haskins Laboratories, New Haven, Connecticut, USA k The Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, Northwestern University, Evanston, Illinois, USA Abstract: Here we describe two studies linking perceptual change with motor learning. In the first, we document persistent changes in somatosensory perception that occur following force field learning. Subjects learned to control a robotic device that applied forces to the hand during arm movements. This led to a change in the sensed position of the limb that lasted at least 24 h. Control experiments revealed that the sensory change depended on motor learning. In the second study, we describe changes in the perception of speech sounds that occur following speech motor learning. Subjects adapted control of speech movements to compensate for loads applied to the jaw by a robot. Perception of speech sounds was measured before and after motor learning. Adapted subjects showed a consistent shift in perception. In contrast, no consistent shift was seen in control subjects and subjects that did not adapt to the load. These studies suggest that motor learning changes both sensory and motor function. Keywords: motor learning; sensory plasticity; arm movements; proprioception; speech motor control; auditory perception. Introduction the human motor system and, likewise, to skill acquisition in the adult nervous system. -
Order Ephemeroptera
Glossary 1. Abdomen: the third main division of the body; behind the head and thorax 2. Accessory flagellum: a small fingerlike projection or sub-antenna of the antenna, especially of amphipods 3. Anterior: in front; before 4. Apical: near or pertaining to the end of any structure, part of the structure that is farthest from the body; distal 5. Apicolateral: located apical and to the side 6. Basal: pertaining to the end of any structure that is nearest to the body; proximal 7. Bilobed: divided into two rounded parts (lobes) 8. Calcareous: resembling chalk or bone in texture; containing calcium 9. Carapace: the hardened part of some arthropods that spreads like a shield over several segments of the head and thorax 10. Carinae: elevated ridges or keels, often on a shell or exoskeleton 11. Caudal filament: threadlike projection at the end of the abdomen; like a tail 12. Cercus (pl. cerci): a paired appendage of the last abdominal segment 13. Concentric: a growth pattern on the opercula of some gastropods, marked by a series of circles that lie entirely within each other; compare multi-spiral and pauci-spiral 14. Corneus: resembling horn in texture, slightly hardened but still pliable 15. Coxa: the basal segment of an arthropod leg 16. Creeping welt: a slightly raised, often darkened structure on dipteran larvae 17. Crochet: a small hook-like organ 18. Cupule: a cup shaped organ, as on the antennae of some beetles (Coleoptera) 19. Detritus: disintegrated or broken up mineral or organic material 20. Dextral: the curvature of a gastropod shell where the opening is visible on the right when the spire is pointed up 21. -
Ag. Ento. 3.1 Fundamentals of Entomology Credit Ours: (2+1=3) THEORY Part – I 1
Ag. Ento. 3.1 Fundamentals of Entomology Ag. Ento. 3.1 Fundamentals of Entomology Credit ours: (2+1=3) THEORY Part – I 1. History of Entomology in India. 2. Factors for insect‘s abundance. Major points related to dominance of Insecta in Animal kingdom. 3. Classification of phylum Arthropoda up to classes. Relationship of class Insecta with other classes of Arthropoda. Harmful and useful insects. Part – II 4. Morphology: Structure and functions of insect cuticle, moulting and body segmentation. 5. Structure of Head, thorax and abdomen. 6. Structure and modifications of insect antennae 7. Structure and modifications of insect mouth parts 8. Structure and modifications of insect legs, wing venation, modifications and wing coupling apparatus. 9. Metamorphosis and diapause in insects. Types of larvae and pupae. Part – III 10. Structure of male and female genital organs 11. Structure and functions of digestive system 12. Excretory system 13. Circulatory system 14. Respiratory system 15. Nervous system, secretary (Endocrine) and Major sensory organs 16. Reproductive systems in insects. Types of reproduction in insects. MID TERM EXAMINATION Part – IV 17. Systematics: Taxonomy –importance, history and development and binomial nomenclature. 18. Definitions of Biotype, Sub-species, Species, Genus, Family and Order. Classification of class Insecta up to Orders. Major characteristics of orders. Basic groups of present day insects with special emphasis to orders and families of Agricultural importance like 19. Orthoptera: Acrididae, Tettigonidae, Gryllidae, Gryllotalpidae; 20. Dictyoptera: Mantidae, Blattidae; Odonata; Neuroptera: Chrysopidae; 21. Isoptera: Termitidae; Thysanoptera: Thripidae; 22. Hemiptera: Pentatomidae, Coreidae, Cimicidae, Pyrrhocoridae, Lygaeidae, Cicadellidae, Delphacidae, Aphididae, Coccidae, Lophophidae, Aleurodidae, Pseudococcidae; 23. Lepidoptera: Pieridae, Papiloinidae, Noctuidae, Sphingidae, Pyralidae, Gelechiidae, Arctiidae, Saturnidae, Bombycidae; 24. -
New Clues for the Cerebellar Mechanisms of Learning
REVIEW Distributed Circuit Plasticity: New Clues for the Cerebellar Mechanisms of Learning Egidio D’Angelo1,2 & Lisa Mapelli1,3 & Claudia Casellato 5 & Jesus A. Garrido1,4 & Niceto Luque 4 & Jessica Monaco2 & Francesca Prestori1 & Alessandra Pedrocchi 5 & Eduardo Ros 4 Abstract The cerebellum is involved in learning and memory it can easily cope with multiple behaviors endowing therefore of sensory motor skills. However, the way this process takes the cerebellum with the properties needed to operate as an place in local microcircuits is still unclear. The initial proposal, effective generalized forward controller. casted into the Motor Learning Theory, suggested that learning had to occur at the parallel fiber–Purkinje cell synapse under Keywords Cerebellum . Distributed plasticity . Long-term supervision of climbing fibers. However, the uniqueness of this synaptic plasticity . LTP . LTD . Learning . Memory mechanism has been questioned, and multiple forms of long- term plasticity have been revealed at various locations in the cerebellar circuit, including synapses and neurons in the gran- Introduction ular layer, molecular layer and deep-cerebellar nuclei. At pres- ent, more than 15 forms of plasticity have been reported. There The cerebellum is involved in the acquisition of procedural mem- has been a long debate on which plasticity is more relevant to ory, and several attempts have been done at linking cerebellar specific aspects of learning, but this question turned out to be learning to the underlying neuronal circuit mechanisms. -
Panoploscelis Scudderi Beier, 1950 And
Panoploscelis scudderi Beier, 1950 and Gnathoclita vorax (Stoll, 1813): two katydids with unusual acoustic, reproductive and defense behaviors (Orthoptera, Pseudophyllinae) Sylvain Hugel To cite this version: Sylvain Hugel. Panoploscelis scudderi Beier, 1950 and Gnathoclita vorax (Stoll, 1813): two katydids with unusual acoustic, reproductive and defense behaviors (Orthoptera, Pseudophyllinae). Zoosys- tema, Museum Nationale d’Histoire Naturelle Paris, 2018, 40 (sp1), pp.327. 10.5252/zoosys- tema2019v41a17. hal-02349677 HAL Id: hal-02349677 https://hal.archives-ouvertes.fr/hal-02349677 Submitted on 21 Jan 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. TITLE English Panoploscelis scudderi Beier, 1950 and Gnathoclita vorax (Stoll, 1813): two katydids with unusual acoustic, reproductive and defense behaviors (Orthoptera, Pseudophyllinae). TITLE French Panoploscelis scudderi Beier, 1950 et Gnathoclita vorax (Stoll, 1813) : deux sauterelles aux comportements acoustiques, reproducteurs et de défenses remarquables (Orthoptera, Pseudophyllinae). RUNNING head Two katydids with unusual behaviors Sylvain HUGEL INCI, UPR 3212 CNRS, Université de Strasbourg, 5 rue Blaise Pascal, F-67000 Strasbourg (France) [email protected] ABSTRACT Two species of Eucocconotini Beier, 1960 were collected during the “Our Planet Revisited, Mitaraka 2015” survey in the Mitaraka Mountains belonging to Tumuc-Humac mountain chain in French Guyana: Gnathoclita vorax (Stoll, 1813) and Panoploscelis scudderi Beier, 1950. -
Audiology and Hearing Aid Services
For more information, call the Hearing Aid Services office nearest you: Comprehensive hearing aid related services Barbourville Bowling Green are available to children diagnosed with (800) 348-4279 (800) 843-5877 permanent childhood hearing loss (PCHL). (606) 546-5109 (270) 746-7816 Elizabethtown Hazard Who should be referred to the OCSHCN (800) 995-6982 (800) 378-3357 Hearing Aid Services program? (270) 766-5370 (606) 435-6167 Children who are in need of new or Lexington Louisville replacement hearing aids and want to (800) 817-3874 (800) 232-1160 receive hearing aids and related services (859) 252-3170 (502) 429-4430 through a OCSHCN audiologist and wish to Morehead Owensboro receive Otology care outside of the (800) 928-3049 (877) 687-7038 clinical Otology program. (606) 783-8610 (270) 687-7038 What audiology services are available Paducah Prestonsburg (800) 443-3651 (800) 594-7058 through the OCSHCN Hearing Aid Services (270) 443-3651 (606) 889-1761 program? Licensed, certified audiologists conduct Somerset (800) 525-4279 periodic comprehensive hearing evaluations, (606) 677-4120 hearing aid checks, hearing aid repairs and Audiology and hearing aid evaluations according to ASHA best practices guidelines. Comprehensive Kentucky Cabinet for Health and Family Services Hearing Aid Services Office for Children with Special Health Care Needs reports are provided to the managing 310 Whittington Parkway, Suite 200, Louisville, KY 40222 otolaryngologist on an on-going basis; Phone: (502) 429-4430 or (800) 232-1160 FAX: (502) 429-4489 additional follow up testing will be http://chfs.ky.gov/agencies/ccshcn Information for Parents and Equal Opportunity Employer M/D/F completed at physician request. -
Anatomy of the Ear ANATOMY & Glossary of Terms
Anatomy of the Ear ANATOMY & Glossary of Terms By Vestibular Disorders Association HEARING & ANATOMY BALANCE The human inner ear contains two divisions: the hearing (auditory) The human ear contains component—the cochlea, and a balance (vestibular) component—the two components: auditory peripheral vestibular system. Peripheral in this context refers to (cochlea) & balance a system that is outside of the central nervous system (brain and (vestibular). brainstem). The peripheral vestibular system sends information to the brain and brainstem. The vestibular system in each ear consists of a complex series of passageways and chambers within the bony skull. Within these ARTICLE passageways are tubes (semicircular canals), and sacs (a utricle and saccule), filled with a fluid called endolymph. Around the outside of the tubes and sacs is a different fluid called perilymph. Both of these fluids are of precise chemical compositions, and they are different. The mechanism that regulates the amount and composition of these fluids is 04 important to the proper functioning of the inner ear. Each of the semicircular canals is located in a different spatial plane. They are located at right angles to each other and to those in the ear on the opposite side of the head. At the base of each canal is a swelling DID THIS ARTICLE (ampulla) and within each ampulla is a sensory receptor (cupula). HELP YOU? MOVEMENT AND BALANCE SUPPORT VEDA @ VESTIBULAR.ORG With head movement in the plane or angle in which a canal is positioned, the endo-lymphatic fluid within that canal, because of inertia, lags behind. When this fluid lags behind, the sensory receptor within the canal is bent. -
Sensory Overamplification in Layer 5 Auditory Corticofugal Projection Neurons Following Cochlear Nerve Synaptic Damage
Corrected: Publisher correction ARTICLE DOI: 10.1038/s41467-018-04852-y OPEN Sensory overamplification in layer 5 auditory corticofugal projection neurons following cochlear nerve synaptic damage Meenakshi M. Asokan1,2, Ross S. Williamson1,3, Kenneth E. Hancock1,3 & Daniel B. Polley1,2,3 Layer 5 (L5) cortical projection neurons innervate far-ranging brain areas to coordinate integrative sensory processing and adaptive behaviors. Here, we characterize a plasticity in 1234567890():,; L5 auditory cortex (ACtx) neurons that innervate the inferior colliculus (IC), thalamus, lateral amygdala and striatum. We track daily changes in sound processing using chronic widefield calcium imaging of L5 axon terminals on the dorsal cap of the IC in awake, adult mice. Sound level growth functions at the level of the auditory nerve and corticocollicular axon terminals are both strongly depressed hours after noise-induced damage of cochlear afferent synapses. Corticocollicular response gain rebounded above baseline levels by the following day and remained elevated for several weeks despite a persistent reduction in auditory nerve input. Sustained potentiation of excitatory ACtx projection neurons that innervate multiple limbic and subcortical auditory centers may underlie hyperexcitability and aberrant functional coupling of distributed brain networks in tinnitus and hyperacusis. 1 Eaton-Peabody Laboratories, Massachusetts Eye and Ear Infirmary, Boston, MA 02114, USA. 2 Division of Medical Sciences, Harvard University, Boston, MA 02114, USA. 3 Department of Otolaryngology, Harvard Medical School, Boston, MA 02114, USA. Correspondence and requests for materials should be addressed to M.M.A. (email: [email protected]) NATURE COMMUNICATIONS | (2018) 9:2468 | DOI: 10.1038/s41467-018-04852-y | www.nature.com/naturecommunications 1 ARTICLE NATURE COMMUNICATIONS | DOI: 10.1038/s41467-018-04852-y he auditory system employs a variety of gain control to the IC and striatum33 or both to the IC and brainstem34). -
Article Role of Delayed Nonsynaptic Neuronal Plasticity in Long-Term Associative Memory
Current Biology 16, 1269–1279, July 11, 2006 ª2006 Elsevier Ltd All rights reserved DOI 10.1016/j.cub.2006.05.049 Article Role of Delayed Nonsynaptic Neuronal Plasticity in Long-Term Associative Memory Ildiko´ Kemenes,1 Volko A. Straub,1,3 memory, and we describe how this information can be Eugeny S. Nikitin,1 Kevin Staras,1,4 Michael O’Shea,1 translated into modified network and behavioral output. Gyo¨ rgy Kemenes,1,2,* and Paul R. Benjamin1,2,* 1 Sussex Centre for Neuroscience Introduction Department of Biological and Environmental Sciences School of Life Sciences It is now widely accepted that nonsynaptic as well as University of Sussex synaptic plasticity are substrates for long-term memory Falmer, Brighton BN1 9QG [1–4]. Although information is available on how nonsy- United Kingdom naptic plasticity can emerge from cellular processes active during learning [3], far less is understood about how it is translated into persistently modified behavior. Summary There are, for instance, important unanswered ques- tions regarding the timing and persistence of nonsynap- Background: It is now well established that persistent tic plasticity and the relationship between nonsynaptic nonsynaptic neuronal plasticity occurs after learning plasticity and changes in synaptic output. In this paper and, like synaptic plasticity, it can be the substrate for we address these important issues by looking at an long-term memory. What still remains unclear, though, example of learning-induced nonsynaptic plasticity is how nonsynaptic plasticity contributes to the altered (somal depolarization), its onset and persistence, and neural network properties on which memory depends. its effects on synaptically mediated network activation Understanding how nonsynaptic plasticity is translated in an experimentally tractable molluscan model system. -
Morpholo(;Y of the Insect Abdomen
SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 85, NUMBER b morpholo(;y of the insect abdomen FART I. GENERAL STRliCTllRr^ OE THli ABDOMEJ AND rrS APPENDAGES BY R. E. SNODGRASS Bureau of Entomology, U. S. Department of Agriculture (l'UBLlC\Tloy 3124) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION NOVEMBER 6, 1931 BALTIMORE, MD., U. S. A. MORPHOLOGY OF THE INSECT ABDOMEN PART I. GENERAL STRUCTURE OF THE ABDOMEN AND ITS APPENDAGES By R. E. SNODGRASS Bureau of Entomology U. S. Dkpartment of Aoriculture CONTENTS Introduction i I. The abdominal sclerotization 6 II. The abdominal segments 14 The visceral segments 16 The genital segments i" The postgenital segments 19 III. Tlie abdominal musculature 28 General plan of the abdominal musculature 31 The abdominal musculature of adult Pterygota 42 The abdominal musculature of endopterygote larvae 48 The abdominal musculature of Apterygota 56 IV^. The abdominal appendages 62 Body appendages of Chilopoda 65 Abdominal appendages of Crustacea 68 The abdominal appendages of Protura 70 General structure of the abdominal appendages of insects 71 The abdominal appendages of Collembola 72 The abdominal appendages of Thysanura 74 The abdominal gills of ephemerid larvae 77 Lateral abdominal appendages of sialid and coleopterous larvae. ... 79 The abdominal legs of lepidopterous larvae 83 The gonopods 88 The cerci (uropods ) 92 The terminal appendages of endopterygote larvae 96 Terminal lobes of the paraprocts 107 Aforphology of the abdominal appendages loS Ablireviations used on the figures 122 l\cferences 123 INTRODUCTION The incision of the insect into head, thorax, and abdomen is in general more evident in the cervical region than at the thoracico- abdominal line ; but anatomically the insect is more profoundly divided between the thorax and the abdomen than it is between the head and Smithsonian Miscellaneous Collections, Vol.