Abstract：
:Previous work in our laboratory has demonstrated that binocular vision makes an important contribution to skilled reaching and grasping movements directed at static targets. In the present study we examine the contribution of binocular vision to interceptive reaching movements. We monitored such movements using a high-resolution, opto-electronic recording device (WATSMART), while subjects attempted to catch balls projected at them. No differences were found between monocular and binocular viewing conditions using this paradigm - either with respect to the velocity profiles or trajectories of the reaches. Moreover, the grasp was not affected by the type of vision available. It appears, then, that the moving targets provide adequate monocular depth and direction information (on the basis of optic flow) for the control of skilled interceptive movements directed at them. In addition, the time to achieve maximum grip aperture was constant across the trials - a finding consistent with the use of a time-to-contact variable derived from optic flow information. Finally, the transport component of prehension was found to be affected by certain variables that have, in the past, been thought to exclusively affect the grasp component of prehension, whereas the grasp component of prehension was affected by factors that have traditionally been thought to affect only the transport component.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Servos P,Goodale MAdoi
10.1007/s002210050323subject
Has Abstractpub_date
1998-03-01 00:00:00pages
92-102issue
1eissn
0014-4819issn
1432-1106journal_volume
119pub_type
临床试验,杂志文章abstract：:Hand shaping during prehension involves intricate coordination of a complex system of bones, joints, and muscles. It is widely hypothesized that the motor system uses strategies to reduce the degrees of independent control. Both biomechanical constraints that result in coupling of the fingers and joints and neural syn...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-014-4117-4
更新日期：2015-02-01 00:00:00
abstract：:Recent evidence suggests that brain injury can impair the ability to independently activate shoulder and elbow muscles. We hypothesized that if muscle activation patterns are constrained, then brain-injured subjects should not be able to accurately grade initial hand movement direction during reaching toward a broad r...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1055-3
更新日期：2002-04-01 00:00:00
abstract：:The memory for the final position of a moving object which suddenly disappears has been found to be displaced forward, in the direction of motion, and downwards, in the direction of gravity. These phenomena were coined, respectively, Representational Momentum and Representational Gravity. Although both these and simil...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-016-4654-0
更新日期：2016-09-01 00:00:00
abstract：:Excitatory inputs to neurons in the Forel's field H (FFH) related to visually induced vertical saccades from the ipsilateral superior colliculus (SC) were investigated in chronically prepared alert cats. By stimulation of the deep or intermediate layer of the SC, upward augmenting neurons (ANs) and one long-lead downw...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230857
更新日期：1990-01-01 00:00:00
abstract：:We investigated the influence of gaze elevation on judging the possibility of passing under high obstacles during pitch body tilts, while stationary, in absence of allocentric cues. Specifically, we aimed at studying the influence of egocentric references upon geocentric judgements. Seated subjects, orientated at vari...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1589-0
更新日期：2009-02-01 00:00:00
abstract：:In anesthetized and paralyzed cats, the normal alignment of the visual axes is disturbed by paralysis of the eye muscles. Thus, the separation between paired receptive fields of binocular cells in visual cortex is increased (paralysis squint). This increased separation is normally tolerated by the majority of visuocor...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00249802
更新日期：1987-01-01 00:00:00
abstract：:The effects of short-term, constant practice on the kinematics of a multi-joint pointing movement were studied in the hemiparetic arm of 20 chronic patients with unilateral left cerebro-vascular accident (CVA) and in 10 age- and sex-matched healthy individuals. Practice consisted of a single session of 70 pointing mov...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1568-4
更新日期：2003-10-01 00:00:00
abstract：:Fourteen healthy adults were tested to assess the potential influence on stance maintenance of two parts of the visual feedback technique (display scale and time delay). The task consisted in their keeping a spot on the screen representing their center of pressure, CoP (i.e. successive points of application of the gro...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-2288-8
更新日期：2005-08-01 00:00:00
abstract：:Sensitivity to binocular positional mismatch was evaluated in cat striate cortical neurones, for paired, dichoptically presented, moving sine-wave gratings whose interocular positional phase relationship was varied. Spatial frequency, orientation and velocity were optimized for each neurone. Binocular responses for ea...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227086
更新日期：1991-01-01 00:00:00
abstract：:In a choice reaction time (RT) paradigm, providing partial advance information (a precue) about the upcoming response has been shown to decrease RT, presumably due to preprogramming of the precued parameters. When advance information about a particular aspect of a movement is provided (precued), several different stra...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2893-7
更新日期：2011-12-01 00:00:00
abstract：:The fast-twitch flexor digitorum longus (FDL) muscle was partially denervated by a unilateral section of the L7 ventral root. After approximately 100 days the isometric, force-velocity and histochemical properties of single motor units from the partially denervated muscle were determined. The diameter of the nerve axo...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236946
更新日期：1985-01-01 00:00:00
abstract：:The possibility of a cerebellar linkage, via the thalamus with medial area 6 of the cerebral cortex was further explored in the present experiments (cf. preceding companion paper). It was found that HRP conjugated to the lectin wheat germ agglutinin injected into motor cortical areas was transported beyond the thalamu...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237671
更新日期：1985-01-01 00:00:00
abstract：:It has previously been demonstrated that Pre-I neurons, localized in the rostral ventrolateral medulla, are important in the generation of the primary respiratory rhythm in brainstem-spinal cord preparations from newborn rats. To investigate whether or not Pre-I neurons have endogenous pacemaker properties, we examine...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00248909
更新日期：1989-01-01 00:00:00
abstract：:Although maintenance of steady contractions is required for many daily tasks, there is little understanding of brain areas that modulate lower limb force accuracy. Functional magnetic resonance imaging was used to determine brain areas associated with steadiness and force during static (isometric) lower limb target-ma...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-014-3976-z
更新日期：2014-10-01 00:00:00
abstract：:We examined the coordination of multi-digit grasping forces as they developed during object grasping and lifting. Ten subjects with Parkinson's disease (PD; OFF and ON medication) and ten healthy age-matched control subjects lifted a manipulandum that measured normal forces at each digit and the manipulandum's positio...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-007-1129-3
更新日期：2008-02-01 00:00:00
abstract：:Interactions from both inhibitory and excitatory interneurons are necessary components of cortical processing that contribute to the vast amount of motor actions executed by humans daily. As transcranial magnetic stimulation (TMS) over primary motor cortex is capable of activating corticospinal neurons trans-synaptica...
journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/s00221-020-05875-y
更新日期：2020-08-01 00:00:00
abstract：:Cats with a natural convergent squint were discovered within a colony of normal Mill Hill cats. In two of them single unit recording was undertaken in area 17. The ocular dominance distribution showed a clear disruption of binocularity in both hemispheres. This lack of binocular units was comparable to cats with artif...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236640
更新日期：1983-01-01 00:00:00
abstract：:Here we aim to evaluate the ability of transcranial direct current stimulation (tDCS), which is applied over Wernicke's area and its right homologue, to influence lexical decisions and semantic priming and establish an involvement for temporo-parietal areas in lexical and semantic processing. Thirty-two subjects (17 w...
journal_title：Experimental brain research
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00221-013-3416-5
更新日期：2013-04-01 00:00:00
abstract：:In general, social neuroscience research tends to focus on visual and auditory channels as routes for social information. However, because the skin is the site of events and processes crucial to the way we think about, feel about, and interact with one another, touch can mediate social perceptions in various ways. Thi...
journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/s00221-009-2007-y
更新日期：2010-07-01 00:00:00
abstract：:Could task performance be constrained by our ability to fully engage necessary neural processing through effort of will? The StartReact phenomenon suggests that this might be the case, as voluntary reaction times are substantially reduced by loud sounds. Here, we show that loud auditory stimulation can also be associa...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2474-1
更新日期：2011-01-01 00:00:00
abstract：:The characteristics of vibration-induced illusory joint movements were studied in healthy human subjects. Unseen by the subject, constant frequency vibration trains applied to the distal tendon of the Triceps or Biceps induced an almost constant velocity illusory movement of the elbow whose direction corresponded to t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239377
更新日期：1982-01-01 00:00:00
abstract：:The main input of the lateral part of the cat's lateralis posterior-pulvinar complex (LP-P) comes from the primary visual cortex. We investigated the response properties of cells in area 17 projecting to the striate-recipient zone (LP1) of the cat's LP-P complex. The cells' receptive fields were stimulated with drifti...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227105
更新日期：1993-01-01 00:00:00
abstract：:To determine if PAG stimulation activates serotonin containing neurons in RM, intracellular techniques were used to identify raphe magnus (RM) cells that are excited by antinociceptive periaqueductal gray (PAG) stimulation in the cat. RM neurons that received a monosynaptic EPSP from PAG shock were intracellularly lab...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00279654
更新日期：1988-01-01 00:00:00
abstract：:In anaesthetized cats (chloralose-urethan) the effects of brief tetanic electrical stimulation (50 to 100 ms) of the mesencephalic central gray matter and reticular formation on the inspiratory on-switch were studied during the expiratory (E) phase on the gross and unitary activities of phrenic, laryngeal inspiratory ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237270
更新日期：1984-01-01 00:00:00
abstract：:Saccades are known to influence subsequent arm movements. There is less information to suggest that the characteristics of saccades depend on the reaching movements they accompany. To explore this issue, we studied the systematic errors of saccades generated by two adult female Rhesus monkeys (Macaca Mulata), which we...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1427-4
更新日期：2008-08-01 00:00:00
abstract：:Sequential intraocular grafting of defined areas from fetal rat brain to adult host rats was used to explore the possibility that such double grafts would become interconnected. Norepinephrine- containing neurons of the locus coeruleus were grafted together with either parietal cerebral cortex, hippocampus, or the cau...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236784
更新日期：1979-03-09 00:00:00
abstract：:We report the connections of cerebellar cortical lobule HVI in the rabbit. We have studied the anterograde and retrograde transport of wheatgerm-agglutinated horseradish peroxidase (WGA-HRP) following its injection into HVI to reveal efferent and afferent connections. All of the cases showed strong anterograde transpo...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237024
更新日期：1985-01-01 00:00:00
abstract：:The properties of adaptation within the locomotor and balance control systems directed towards improving one's recovery strategy for fall prevention are not well understood. The purpose of this study was to examine adaptive control of gait stability to repeated slip exposure leading to a reduction in backward loss of ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-0189-5
更新日期：2006-03-01 00:00:00
abstract：:The properties of sensory reweighting for control of human upright stance have primarily been investigated through experimental techniques such as sinusoidal driving of postural sway. However, other forms of visual inputs that are commonly encountered, such as translation, may produce different adaptive responses. We ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0502-y
更新日期：2006-10-01 00:00:00
abstract：:During saccadic eye movements, images of external objects move rapidly across the retina. Small, unpredictable displacements imposed upon a target moving at saccadic velocity were detected with equal accuracy when (1) the retinal image velocity was caused by an eye movement, or (2) when the same velocity was produced ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236664
更新日期：1980-01-01 00:00:00
