Abstract：
:We have investigated the visual responses of 184 single units located in the superficial layers of the optic tectum (OT) of the decerebrate, paralysed pigeon. Visual responses were similar to those reported in non-decerebrate preparations; most units responded best to moving visual stimuli, 18% were directionally selective (they had a clear preference for a particular direction of visual stimulus movement), 76% were plane-selective (they responded to movement in either direction in a particular plane). However, we also found that a high proportion of units showed some sensitivity to the orientation of visual stimuli. We examined the effects of extraocular muscle (EOM) afferent signals, induced by passive eye movement (PEM), on the directional visual responses of units. Visual responses were most modified by particular directions of eye movement, although there was no unique relationship between the direction of visual stimulus movement to which an individual unit responded best and the direction of eye movement that caused the greatest modification of that visual response. The results show that EOM afferent signals, carrying information concerning the direction of eye movement, reach the superficial layers of the OT in the pigeon and there modify the visual responses of units in a manner that suggests some role for these signals in the processing of visual information.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Knox PC,Whalley HCdoi
10.1007/pl00005779subject
Has Abstractpub_date
1997-10-01 00:00:00pages
510-8issue
3eissn
0014-4819issn
1432-1106journal_volume
116pub_type
杂志文章abstract：:The fiber arrangement of the optic radiation was investigated in fourteen adult cats. The retinotopies of the lateral geniculate nucleus (LGN) were first identified electrophysiologically, and thereafter, wheat germ agglutinin conjugated to horseradish peroxidase (WGA-HRP) was iontophoretically injected into defined p...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227073
更新日期：1991-01-01 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：:Micturition in the decerebrate cat is characterized by a coordinated bladder contraction and a simultaneous decrease in external urethral sphincter (EUS) efferent activity. Without the suppression of EUS activity, voiding is significantly impaired, resulting in a state sometimes referred to as bladder-sphincter dyssyn...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050345
更新日期：1998-04-01 00:00:00
abstract：:The distribution, dendritic trees and axonal courses of spinally projecting cells in the dorsal column nuclei were studied after labelling by retrograde HRP transport. The region of densest distribution was at the base of the two nuclei and in the area between them, extending for about 2 mm caudally from the obex. Onl...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235479
更新日期：1984-01-01 00:00:00
abstract：:Deep brain stimulation of the subthalamic nucleus (STN DBS) significantly improves clinical motor symptoms, as well as intensive aspects of movement like velocity and amplitude in patients with Parkinson's disease (PD). However, the effects of bilateral STN DBS on integrative and coordinative aspects of motor control ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-018-5197-3
更新日期：2018-04-01 00:00:00
abstract：:Intervention-induced neuroplastic changes within the motor or cognitive system have been shown in the human brain. While cognitive and motor brain areas are densely interconnected, it is unclear whether this interconnectivity allows for a shared susceptibility to neuroplastic changes. Using the preparation for a theor...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05933-5
更新日期：2020-12-01 00:00:00
abstract：:We examined the effects of cerebellar cortical lesions upon conditioned nictitating membrane responses in rabbits. Using extended postoperative conditioning and unpaired presentations of the conditioned stimuli (CSs), we confirmed that combined lesions of lobules HVI and ansiform lobe abolished conditioned responses (...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228191
更新日期：1992-01-01 00:00:00
abstract：:Responses to pure visual stimuli and visual-vestibular interactions similar to those reported in other vertebrates were found in single vestibular nucleus neurons in cat. Contrary to prevailing hypotheses, the cerebellum is not an essential part of the pathway mediating these visual responses. ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239555
更新日期：1978-08-15 00:00:00
abstract：:It has been proposed that visually guided reaching movements performed in the lower visual field (LVF) of peripersonal space are more effective and efficient than their upper visual field (UVF) counterparts (Danckert and Goodale 2001). In the present investigation we sought to determine whether this purported visual f...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0386-x
更新日期：2006-03-01 00:00:00
abstract：:We use a vibrotactile-delayed match-to-sample paradigm to evaluate the effects of interference on working memory. One of the suggested mechanisms through which interference affects performance in working memory is feature overwriting: Short-term representations are maintained in a finite set of feature units (such as ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2501-2
更新日期：2011-02-01 00:00:00
abstract：:Two distinct areas of cerebellar cortex, vermal lobule VII and the dorsal paraflocculus (DPFl) receive visual input. To help understand the visuomotor functions of these two regions, we compared their afferent and efferent connections using the tracers wheatgerm agglutinin horseradish peroxidase (WGA-HRP) and biotinil...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0661-x
更新日期：2007-02-01 00:00:00
abstract：:Human orientation in novel and familiar environments is a complex skill that can involve numerous different strategies. To date, a comprehensive account of how these strategies interrelate at the behavioural level has not been documented, impeding the development of elaborate systems neuroscience models of spatial ori...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3316-0
更新日期：2013-02-01 00:00:00
abstract：:The relationship between neuronal calcium binding protein content (calbindin D28K: CaBP and parvalbumin: PV) and vulnerability to ischemia was studied in different regions of the rat brain using the four vessel occlusion model of complete forebrain ischemia. The areas studied, i.e. the hippocampal formation, neocortex...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00232193
更新日期：1990-01-01 00:00:00
abstract：:Eight human subjects were exposed to 2 h of walking on the perimeter of a horizontally rotating disc with the body remaining still in space. After adaptation to this experience subjects were blindfolded and asked to walk straight ahead on firm ground. When doing so all subjects generated curved walking trajectories of...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/BF00230658
更新日期：1995-01-01 00:00:00
abstract：:Prism adaptation (PA) is a promising rehabilitation technique for visuo-spatial neglect, an attention disorder that is characterized by spatial attention deficits (i.e., deficits in orienting). PA involves visuo-motor adaptation to rightward shifting prism goggles. Following goggle removal, this adaptation results in ...
journal_title：Experimental brain research
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00221-015-4218-8
更新日期：2015-05-01 00:00:00
abstract：:The dual-task (motor and cognitive) performance of eight older adults (72.0 ± 6.4 years; 5 female; 3 male) was evaluated. Vocal choice reaction times (cognitive task) were measured at standstill as well as during unperturbed and perturbed gait (motor task). The perturbation was administered using customized shoes inst...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4533-0
更新日期：2016-04-01 00:00:00
abstract：:In sensory saltation, first reported by Geldard and Sherrick (Science 178:178-179, 1972), a stimulus is displaced towards a second one following closely in time and space as a function of the delay between the stimuli. The distance between stimulus locations is restricted by the extension of sensory fields in the prim...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-0190-z
更新日期：2006-03-01 00:00:00
abstract：:The horizontal and vertical components of the positions of both eyes of rhesus monkeys were measured during periods of binocularly stable eye positions (eye pauses) while the animals fixated a small target. Differences between monocular and binocular viewing, as well as effects of target size and background illuminati...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236231
更新日期：1984-01-01 00:00:00
abstract：:We explored the effects of sensory information upon procedural learning using three versions of the serial reaction-time task (SRTT): a standard task where the position of the stimulus cued the response; a non-standard task where the color of the stimulus was related to the correct response; and a combined task where ...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/s002210000673
更新日期：2001-04-01 00:00:00
abstract：:Recently, it has been reported that grasping with the left hand is more vulnerable to visual size illusions than grasping with the right hand. The present study investigated whether this increased sensitivity of the left hand for visual context extends to reaching. Left- and right-handed participants reached for targe...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2214-6
更新日期：2010-05-01 00:00:00
abstract：:We sought to determine whether mirror-symmetrical limb movements (so-called anti-pointing) elicit a pattern of endpoint bias commensurate with perceptual judgments. In particular, we examined whether asymmetries related to the perceptual over- and under-estimation of target extent in respective left and right visual s...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1612-5
更新日期：2009-01-01 00:00:00
abstract：:The ability to make accurate reaching movements toward proprioceptively defined target locations was studied in seven normal subjects who were trained to reach to five different targets in a horizontal plane, with no vision of hand or target. The task consisted of moving a handle from a fixed origin to each target loc...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229793
更新日期：1993-01-01 00:00:00
abstract：:The muscle activation patterns in anterior and posterior leg muscles were investigated with two types of perturbations to standing balance. Subjects stood with each foot on adjacent force platforms and performed arm flexion movements to shoulder height. Nine subjects performed ten repetitions unilaterally and bilatera...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1732-x
更新日期：2004-04-01 00:00:00
abstract：:Earlier studies have suggested an impairment in the attention and eye movement control of children with ADHD. An important phenomenon in the control of attentional shifts and eye movements is the inhibition of return (IOR), which states that our brain works in a way that prevents our attention from returning to a spat...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1362-8
更新日期：2003-03-01 00:00:00
abstract：:Abstract. Although the contribution of binocular vision to reach-to-grasp movements has been extensively studied, it has been largely ignored in locomotion. The aim of these studies was to explore the role of binocular vision during the approach phase and step over the obstacle and the contribution of head movements t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-001-0948-x
更新日期：2002-02-01 00:00:00
abstract：:It is an important issue to address the mode of information processing in the somatic motor circuit linking the frontal cortex and the basal ganglia. In the present study, we investigated the extent to which corticostriatal input zones from the primary motor cortex (MI), the supplementary motor area (SMA), and the pre...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050384
更新日期：1998-05-01 00:00:00
abstract：:Previous work has highlighted the role of haptic feedback for manual dexterity, in particular for the control of precision grip forces between the index finger and thumb. It is unclear how fine motor skills involving more than just two digits might be affected, especially given that loss of sensation from the hand aff...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-019-05583-2
更新日期：2019-09-01 00:00:00
abstract：:The gain of the vestibulo-ocular reflex (VOR) of intact pigmented rats was adaptively modified by training protocols that created a visual-vestibular conflict. For training, head restrained animals were oscillated on a turntable in front of an optokinetic pattern projected onto a cylindrical wall. The optokinetic patt...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230530
更新日期：1991-01-01 00:00:00
abstract：:Prior studies have shown that procedural learning is severely impaired in patients with diffuse cerebellar damage (cortical degeneration) as measured by the serial reaction time task (SRTT). We hypothesize that focal cerebellar lesions can also have lateralized effects on procedural learning. Our objective was to asse...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050374
更新日期：1998-05-01 00:00:00
abstract：:The effects of an external constant force bias on the information transmitted (Ti) by the direction of isometric force exerted in 2-dimensional (2-D) space by human subjects were studied using an isometric manipulandum and random dot stereograms generated in a color display (Massey et al. 1988, Massey et al. 1990). Su...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00231171
更新日期：1991-01-01 00:00:00
