neuronal representations of bimanual movements

... (Germany) List of Contributors VIII Preface Each of us performs thousands of eye movements every day without being aware of how the brain controls them The oculomotor system is one of the best understood ... VI List of Contributors Prof Dr med U Büttner Department of Neurology Klinikum Grosshadern Marchioninistrasee 15 DE–81377 Munich (Germany) Prof Dr med Jean Büttner-Ennever Institute of Anatomy ... to the sensorimotor control of eye movements, discussing first properties of eye muscles, then their sensory receptors, the central connections of different types of extraocular motoneurons,...

Ngày tải lên: 10/08/2014, 03:20

... movements represent an example of the sensory guidance of movements that has contributed significantly to our understanding of some of the general principles underlying the sensory guidance of ... that the elicited eye movements are closely aligned with the direction of the offending canal With this proof that also in humans eye movements are produced in the plane of the stimulated SCC, ... Fig Electrical stimulation of a single SCC nerve induces eye movements roughly in the plane of that canal (shown for stimulation of the right posterior canal) (Courtesy of A Boehmer, Zürich.) Modern...

Ngày tải lên: 10/08/2014, 03:20

... area The features of these three types of neurons are reminiscent of the neurons in the SC, from which some of the input of the NRTP is derived However, unlike movement fields of saccade neurons ... because of careful adjusting of saccade duration, realized by tuning the neuronal representation of saccade time offered by the posterior vermal population signal In order to induce any changes of ... changes in the metrics of evoked saccades, demonstrating that the intermediate layer of the SC contains a topographic map of saccade endpoints The location of the endpoint of evoked saccades coincides...

Ngày tải lên: 10/08/2014, 03:20

... role of striate cortex in the guidance of eye movements in the monkey J Neurosci 1987;7:3040–3058 Maunsell JHR, Van Essen DC: Functional properties of neurons in middle temporal visual area of ... Involvement of the central thalamus in the control of smooth pursuit eye movements J Neurosci 2005;25:5866–5876 Ono S, Das VE, Economides JR, Mustari MJ: Modeling of smooth pursuit-related neuronal ... Raton, FL, CRC Press, 2000, pp 303–328 Ilg UJ, Hoffmann KP: Responses of neurons of the nucleus of the optic tract and the dorsal terminal nucleus of the accessory optic tract in the awake monkey...

Ngày tải lên: 10/08/2014, 03:20

... tilt of the rotation axis of the covered eye during head oscillation about the naso-occipital axis [137] This ‘convergence’ of ocular rotation axes is the result of decreased force by the SO of ... maintenance of fixation This, in turn, leads to further Disconjugate Eye Movements 101 upward movement of the covered eye and, at the same time, to a reduction of the cyclovertical component of the ... our understanding of the supranuclear control of eyelid function Moreover, several lines of evidence indicate a strong interaction between the neural control of eyelid and eye movements Therefore,...

Ngày tải lên: 10/08/2014, 03:20

... Clinical Application of Lid Movements Blinks and the Initiation of Eye Movements Under certain circumstances, blinks might slow eye movements down, speed them up, or elicit specific eye movements Patients ... rather to changes of the activity of OPNs or to visual suppression [65] The activity of 50% of the OPNs is decreased during ongoing smooth pursuit [88] Electrical stimulation of the OPN area during ... component of the blink reflex [131] Cases of unilateral lid spasm may occur in conjunction with unilateral or hemifacial spasm The most common cause of hemifacial spasm is irritation of the seventh...

Ngày tải lên: 10/08/2014, 03:20

... biomechanics of the eye Subsequently, models of the neural velocity-toposition integrator, which is common to all types of eye movements, are considered Finally, models of the various types of eye movements ... pathological eye movements often allows the topological diagnosis of the lesion causing the abnormalities Despite our extensive knowledge of the anatomy and physiology of eye movements, very little ... control of smooth pursuit eye movements J Neurosci 2005;25:5866–5876 95 Ono S, Das VE, Economides JR, Mustari MJ: Modeling of smooth pursuit-related neuronal responses in the DLPN and NRTP of the...

Ngày tải lên: 10/08/2014, 03:20

... fourth each of cases of downbeat nystagmus [30, 34] Treatment Since a loss of inhibitory cerebellar influence on the vestibular nuclei is one of the main pathophysiological mechanisms of downbeat ... side of the affected canal [11, 91] h-BPPV was reported to occur in about 12% of a series of 300 patients [91] BPPV of the anterior vertical canal probably occurs much more seldom than that of ... or jerk oscillation around the line of gaze A half-cycle consists of elevation and intorsion of one eye with synchronous Straube 182 depression and extorsion of the other eye [6, 47] During the...

Ngày tải lên: 10/08/2014, 03:20

... study of the social representations of health and illness among town and country folk, Chombart de Lauwe’s (1984) study of the social representations of childhood and Jodelet’s (1991) study of representations ... representations of madness in a French community, Chombart de Lauwe (1984), who explored representations of childhood and Joffe’s (1999) analysis of the social representations of risk The role of pilot ... between rituals and representations and, in the process, critiques traditional models of grief Representations of Death makes use of the social psychological theory of social representations and...

Ngày tải lên: 07/11/2012, 14:20

... study of the social representations of health and illness among town and country folk, Chombart de Lauwe’s (1984) study of the social representations of childhood and Jodelet’s (1991) study of representations ... representations of madness in a French community, Chombart de Lauwe (1984), who explored representations of childhood and Joffe’s (1999) analysis of the social representations of risk The role of pilot ... between rituals and representations and, in the process, critiques traditional models of grief Representations of Death makes use of the social psychological theory of social representations and...

Ngày tải lên: 15/02/2014, 15:20

... quantum representations and simply write ρk = ρn,d throughout the rest of the paper k Our key idea in the proof of Theorem is the use of the endomorphism bundle End(Vk ) and the construction of sections ... means that the quantum SU(n) representations ρk is the same sequence of representations as the one arising from the space of conformal blocks for sl(n, C) By the work of Reshetikhin-Turaev, Topological ... as a purely TQFT consequence of Corollary In this paper we have initiated the program of using of the theory of Toeplitz operators on the moduli spaces in the study of TQFT’s The main insight behind...

Ngày tải lên: 16/02/2014, 05:20

... for expression of pri-miR9-1 expression of pri-miR9-1 expression of pri-miR9-2 expression of pri-miR9-2 expression of pri-miR9-3 expression of pri-miR9-3 neuronal differentiation neuronal differentiation ... orientation of the primers Bold font represents the sequence of mature miR9* and italic fonts the sequence of mature miR9 (C) RT-PCR analysis of pri-miR9s during the neuronal differentiation of P19 ... H Ko et al Bioimaging of miR9 and miR9* during neurogenesis higher endogenous level of mature miR9 than of mature miR9* In vivo visualization of unbalanced expressions of mature miR9 and miR9*...

Ngày tải lên: 18/02/2014, 17:20

... Professor of Attitudes and Social Representations and of Psychology of Communication and new media at the Faculty of Medicine and Psychology Sapienza University, Rome European Ph.D on Social Representations ... topic of aesthetic surgery, specific cultural identification referent • The content and structure of the social representations of aesthetic surgery is related to the social representations of feminine ... and structure of each of the social representations, explored through the statistical method of lexical correspondence analysis 86 De Rosa, A S., & Holman, A Social Representations of Masculine...

Ngày tải lên: 19/02/2014, 17:20

... K-orbits of maximal dimension of the real diamond group, Vietnam J Math., Vol 15, IS 1987 12 Le Anh Vu, On the structure of the C*-algebra of foliation formed by the K-orbits of maximal dimension of ... help of the dual basis X ∗ , Y ∗ , Z ∗ , T ∗ and with the local coordinates as (α, β, γ, δ) Thus, the general form of an element of g is A = aX + bY + cZ + dT and the general form of an element of ... by ∆s (F ) we denote the collection of all minors of Cij (F ) of the size n − r − 2s + 2, the condition ∆s (F ) = indicates that all the minors of Cij (F ) of the size n − r − 2s + vanish at the...

Ngày tải lên: 05/03/2014, 14:20

... pattern of the weights of irreducible representations determines the root datum The statement (12.10) expresses the patterns of weights of the representations LGκ (λ) The pattern of weights of LR ... proof of this theorem we discuss it briefly from the point of view of representation theory We can view the theorem as giving us a ˇ geometric interpretation of representation theory of G First of ... finite set of generators λ of the semigroup of dominant cocharacters, are pull-backs of representations of G∗ For any domiκ nant coweights λ, μ, the sheaf I!∗ (λ + μ, Fp ) is a subquotient of the...

Ngày tải lên: 06/03/2014, 08:21

... Annals of Mathematics, 160 (2004), 683–704 Unique decomposition of tensor products of irreducible representations of simple algebraic groups By C S Rajan Abstract We show that a tensor product of ... 2.1) The first main step towards a proof of the theorem, is to recast the hypothesis as an equality of the corresponding products of characters of the individual representations occurring in the tensor ... on the rank of g, by the fact that any simple Lie algebra of rank l, has a simple subalgebra of rank l − We analyze the restriction of the numerator of the Weyl character formula of g to the...

Ngày tải lên: 14/03/2014, 22:20

... identified Lymnaea neurons This is of interest in light of the recent cloning of a set of nAChR subunits from this species and electrophysiological analysis of several of them expressed in Xenopus ... resemble a7 nAChRs of vertebrates in terms of the efficacy of choline, cytisine, and nicotine (all of them are full agonists) and their high sensitivity to a-conotoxin ImI [23] Two groups of cells distinct ... residual unblocked current was of approximately the same amplitude in the presence of saturating concentrations of ImI or either of the two PnIA mutants The relative potency of the Novel a-conotoxin...

Ngày tải lên: 16/03/2014, 13:20

... out alternatives, I also examine the ideologies of the films and issues of textual silence The study offers a critique of these issues in the spirit of other well-known ideological film studies, ... socioeconomic representations of characters, treatment of different races, sexes, and sexual preferences, methods of production as they relate to addicted characters and drug usage, and the depiction of ... characters In some ways, like many representations of black judges or police officers, these officials reinforce dominant ideological positions by becoming the point of contrast with the dangerous...

Ngày tải lên: 16/03/2014, 17:20

... it is part of the representation of a large percentage of sentences in which the word appears The best wordT L G G pair in T, denoted (w, t) is the one with the highest percentage of this overlap ... that t can also be part of the representation of a large percentage of sentences in which another word appears, since we can have synonyms in our input Second, one copy of each sentence representation ... that of (McClelland and Kawamoto, 1986) T h a t corpus is a set of 1475 sentence/case-structure pairs, produced from a set of 19 sentence templates We modified only the casestructure portion of...

Ngày tải lên: 17/03/2014, 09:20