Abstract：
:How do we achieve unitary perception of an object when it touches two parts of the sensory epithelium that are not contiguous? We investigated this problem with a simple psychophysical task, which we then used in an fMRI experiment. Two wooden rods were moved over two digits positioned to be spatially adjacent. The digits were either from one foot (or hand) or one digit was from either foot (or hand). When the rods were moving in phase, one object was reliably perceived. By contrast, when the rods were moving out of phase, two objects were reliably perceived. fMRI revealed four cortical areas where activity was higher when the moving rods were perceived as one object relative to when they were perceived as two separate objects. Areas in the right inferior parietal lobule, the left inferior temporal sulcus and the left middle frontal gyrus were activated for this contrast regardless of the anatomical configuration of the stimulated sensory epithelia. By contrast, the left intraparietal sulcus was activated specifically when integration across the midline was required, irrespective of whether the stimulation was applied to the hands or feet. These results reveal a network of brain areas involved in generating a unified percept of the presence of an object that comes into contact with different parts of the body surface.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Peelen MV,Rogers J,Wing AM,Downing PE,Bracewell RMdoi
10.1007/s00221-010-2306-3subject
Has Abstractpub_date
2010-07-01 00:00:00pages
457-64issue
3eissn
0014-4819issn
1432-1106journal_volume
204pub_type
杂志文章abstract：:The uptake of tritiated gamma-aminobutyric acid (3H-GABA) in the oculomotor nucleus of the cat was studied, using light and electron microscopic examination of radioautograms after intracerebral in vivo administration of the amino-acid. A glial uptake by oligodendrocytes was seen together with a neuronal uptake of the...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239581
更新日期：1982-01-01 00:00:00
abstract：:Attention to sensory stimulation modulates behavioural responses and cortical activity. Attention to movement can also modulate motor responses. For example, directing attention away from cued movements can increase reaction times. This study used fMRI to determine where in the motor cortex attention to movement modul...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-001-0905-8
更新日期：2002-01-01 00:00:00
abstract：:Previous research has shown that the timing of a sensor-motor event is recalibrated after a brief exposure to a delayed feedback of a voluntary action (Stetson et al. 2006). Here, we examined whether it is the sensory or motor event that is shifted in time. We compared lag adaption for action-feedback in visuo-motor p...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-2047-3
更新日期：2010-03-01 00:00:00
abstract：:Rhythmic movement patterns between the hands in response to environmental signals are studied in normal (musicians and nonmusicians) and split-brain subjects. Only two phase-locked states - in-phase and anti-phase - are shown to be stable for all subjects. Split-brain subjects show an even greater attraction to these ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00247936
更新日期：1989-01-01 00:00:00
abstract：:The action of delta-aminovaleric acid (AVA) on the muscle relaxant properties of baclofen, a GABAB receptor agonist, was investigated in two experimental models: (1) the pathologically increased muscle tone of the gastrocnemius muscle in spastic mutant Han-Wistar rats and (2) the Hoffmann (H)-reflex recorded from plan...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00247610
更新日期：1988-01-01 00:00:00
abstract：:Ganglioside and DNA levels were estimated in the striatum of rats 10 days and 6 weeks after lesioning by intrastriatal injection of kainic acid. There was a moderate, 21-24% decrease of the ganglioside concentration per unit protein on the side of the lesion, which can be ascribed to the loss of the intrinsic striatal...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00238752
更新日期：1981-01-01 00:00:00
abstract：:The specificity of adaptation of vestibulo-ocular reflex direction was examined by exposing cats to combined pitch vestibular rotation and horizontal optokinetic motion at 0.25 Hz, while alternating body position between lying on the left side and lying on the right. The direction of optokinetic motion relative to hea...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00247045
更新日期：1987-01-01 00:00:00
abstract：:When asked to identify the position of a sound, listeners can report its perceived location as well as their subjective certainty about this spatial judgement. Yet, research to date focused primarily on measures of perceived location (e.g., accuracy and precision of pointing responses), neglecting instead the phenomen...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05748-4
更新日期：2020-03-01 00:00:00
abstract：:The purpose of this study was to investigate the time-course of corticospinal excitability during reaction time (RT), and compare the excitability when a precue provided information regarding both the direction and extent of the upcoming movement ('Full' condition), specified the direction of the upcoming movement onl...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1772-2
更新日期：2004-05-01 00:00:00
abstract：:Studies on motor learning typically present a constant adaptation stimulus, corresponding to the desired final adaptive state. Studies of the auditory and optokinetic systems provide compelling evidence that neural plasticity is enhanced when the error signal driving adaptation is instead adjusted gradually throughout...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1537-z
更新日期：2008-12-01 00:00:00
abstract：:The smooth pursuit eye movement system uses retinal information about the image-slip-velocity of the target in order to match the eye-velocity-in-space (i.e., gaze-velocity) to the actual target velocity. To maintain the target image on the fovea during smooth gaze tracking, and to compensate for the long delays invol...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1088-7
更新日期：2002-07-01 00:00:00
abstract：:Reflexive attentional shift in response to another individual's gaze direction has been reported, but it remains unknown whether this process can occur subliminally. We investigated this issue using facial stimuli consisting of drawings (Experiment 1) and photographs (Experiment 2). The gaze direction was expressed by...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-007-1025-x
更新日期：2007-10-01 00:00:00
abstract：:Everyday actions can be characterized by whether they are freely chosen or commanded by external stimuli, and whether they produce pleasant or unpleasant outcomes. To assess how these aspects of actions affect the sense of agency, we asked participants to perform freely selected or instructed key presses which could p...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-017-5112-3
更新日期：2018-01-01 00:00:00
abstract：:Arm motor performance of eight Cebus monkeys was examined during reversible cooling in the ventral lateral region of the putamen and globus pallidus (primarily the external segment), where neurons discharging during arm movements have been found (DeLong 1972). When attempting to hold a handle stationary during basal g...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237552
更新日期：1980-01-01 00:00:00
abstract：:A size-weight illusion was used to examine the role of visual cues in the programming of manipulative forces during the lifting of test objects utilizing the precision grip. Three different boxes of equal weight and unequal size were lifted. These were equipped with an instrumented grip handle to measure the employed ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229824
更新日期：1991-01-01 00:00:00
abstract：:Projections from the posterior thalamic regions to the striatum were studied in the cat by the anterograde tracing method after injecting wheat germ agglutinin-horseradish peroxidase conjugate (WGA-HRP) into the caudalmost regions of the lateroposterior thalamic nucleus (caudal LP), suprageniculate nucleus (Sg) and ma...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235934
更新日期：1985-01-01 00:00:00
abstract：:In 15 musicians, cortical DC-potentials were recorded from the scalp before and during the execution of bimanual motor sequences. Subjects (Ss) either tapped with their two index fingers in synchrony (quavers against quavers; "2 against 2") or they tapped quavers against triplets ("2 against 3"). Either the right or t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229320
更新日期：1990-01-01 00:00:00
abstract：:Within-arm somatotopy was identified in multiple motor areas of six normal human subjects who performed a visuomotor tracking task during positron emission tomography (PET) measurement of relative cerebral blood flow (relCBF). A randomly moving target, presented on a computer monitor, was continuously followed with th...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229666
更新日期：1993-01-01 00:00:00
abstract：:To understand performance of evasive and interceptive actions it is important to know how people decide when to initiate a movement-initiating at the 'right' moment is often essential for successful performance. It has been proposed that initiation is triggered when a perceptually derived quantity reaches an invariant...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-004-1994-y
更新日期：2004-11-01 00:00:00
abstract：:The content of calcitonin gene-related peptide-like immunoreactivity (CGRP-LI) in motoneurons was studied in four motor pools supplying muscles in the rat hind limb subserving different types of motor activity. The motor pools were identified by retrograde labeling with horseradish peroxidase or fluorophore-conjugated...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227109
更新日期：1993-01-01 00:00:00
abstract：:Previous studies have demonstrated the importance of both kinesthetic and auditory feedback for control of voice fundamental frequency (F0). In the present study, a possible interaction between auditory feedback and kinesthetic feedback for control of voice F0 was tested by administering local anesthetic to the vocal ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1330-z
更新日期：2008-06-01 00:00:00
abstract：:The coordination between eye and head movements during a rapid orienting gaze shift has been investigated mainly when subjects made horizontal movements towards visual targets with the eyes starting at the centre of the orbit. Under these conditions, it is difficult to identify the signals driving the two motor system...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/pl00005663
更新日期：1997-05-01 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：:We studied Fos expression in the central nociceptive pathways at different sedative levels in order to clarify the central mechanism of propofol's nociceptive action. Sprague-Dawley rats received propofol (PRO) or pentobarbital (PEN) and were divided into two groups with different doses of drug administration (light a...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0779-x
更新日期：2007-05-01 00:00:00
abstract：:In the present study, we investigated topographical differences between monocularly and binocularly evoked potential fields related to the retinal location and spatial frequency of grating stimuli. Electrical brain activity was recorded in 18 healthy adults using an array of 21 electrodes over the occipital areas. Ver...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229366
更新日期：1993-01-01 00:00:00
abstract：:Based on the observations that the psychostimulant drug amphetamine in combination with physiotherapy can promote recovery of brain function after brain injury, we have studied the ability of the vigilance promoting drug Modafinil to counteract 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-(MPTP)-induced degeneration o...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF02259133
更新日期：1992-01-01 00:00:00
abstract：:The evoked expression of the immediate early gene-encoded proteins c-Fos and Krox-24 was used to study activation of hindbrain neurons as a function of the development of cyclophosphamide (CP) cystitis in behaving rats. CP-injected animals received a single dose of 100 mg/kg i.p. under transient volatile anesthesia an...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227263
更新日期：1996-03-01 00:00:00
abstract：:Human subjects can readily adapt their movement trajectories to different dynamic or visuomotor environments. The focus of the current study was to determine whether subjects could simultaneously adapt to multiple dynamic environments. Subjects ( n=5) drew ellipses continuously for 70 s using a torquable manipulandum ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1260-0
更新日期：2003-01-01 00:00:00
abstract：:Counts of callosal neurons retrogradely labeled by horseradish peroxidase (visualized using multiple substrates) were obtained in areas 17 and 18 of five kittens reared with their eyelids bilaterally sutured and of three kittens which had undergone bilateral enucleation on postnatal days 1--4. These counts were compar...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239301
更新日期：1980-01-01 00:00:00
abstract：:We studied intermanual motor transfer for right-to-left or left-to-right direction of transfer between either proximal or distal upper extremity muscle groups. The influence of previously acquired motor engrams (original learning, OL) on learning efficiency of the contralateral side (transfer learning, TL) was examine...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/BF00228105
更新日期：1996-03-01 00:00:00
