Abstract：
:The effects of electrical stimulation of the cerebral cortex on the monosynaptic jaw closing and the disynaptic jaw opening reflexes were studied in cats anaesthetized with chloralose. The time course of the reflex effects was recorded. Similar rhythmic sequences of facilitation and inhibition were observed in both reflexes (Fig. 3). The sequence could start with facilitation or inhibition. The latency of the initial effects was short (2.5 ms) indicating a minimum of two synapses in the descending path. The period of the rhythmic sequence was approximately 10 ms. Optimal parameters for the conditioning cortisol stimuli were found to be: trains of 3-5 surface anodal pulses, 0.5 ms, 400 Hz. The threshold of the cortical effects on the reflexes was 0.3 mA. A single pulse evoked effects. The cortical origin of the effects was located and related to the somatosensory projections, and to the cytoarchitecture. The effects of largest amplitude and most complex time course were evoked from the oral and perioral projections to areas 3a and 3b. Effects evoked from areas 4 gamma, 5a, and 6a beta were less complex and of lower amplitude. It is suggested that a trigemino-cortico-trigeminal loop via 3a may function in reflex modulation of the jaw movements. In addition area 3a may contribute to cortico-cortical motor elaborations via U-fiber connections to area 4 gamma.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Olsson KA,Landgren Sdoi
10.1007/BF00237546subject
Has Abstractpub_date
1980-01-01 00:00:00pages
149-64issue
2eissn
0014-4819issn
1432-1106journal_volume
39pub_type
杂志文章abstract：:Modern tools in technological environments are often characterized by a spatial separation of hand actions (operating a remote control) and their intended action effects (displayed movements of an unmanned vehicle, a robot, or an avatar on a screen). Often non-corresponding proximal and distal movement effects put hig...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3018-7
更新日期：2012-04-01 00:00:00
abstract：:Visual stimulation alone is sufficient to produce visually induced postural reactivity (VIPR). While some studies have shown that VIPR increases with the velocity of a moving visual stimulus, others have shown that it decreases with the temporal frequency of an oscillating visual stimulus. These results seem contradic...
journal_title：Experimental brain research
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00221-013-3592-3
更新日期：2013-08-01 00:00:00
abstract：:Nonlinear analysis of the multifocal cortical visual evoked potential has allowed the identification of neural generation of higher-order nonlinear components by magnocellular and parvocellular neural streams. However, the location of individual brain sources that make such contributions to these evoked responses has ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-016-4601-0
更新日期：2016-07-01 00:00:00
abstract：:The flexion reflex modulation pattern was investigated in nine people with a chronic spinal cord injury during stepping using body weight support on a treadmill and manual assistance by therapists. Body weight support was provided by an upper body harness and was adjusted for each subject to promote the best stepping ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-1854-x
更新日期：2009-07-01 00:00:00
abstract：:Several studies have shown that people can catch a ball even if it is visible only during part of its flight. Here, we examine how well they can do so. We measured the movements of a ball and of the hands of both the thrower and the catcher during one-handed underarm throwing and catching. The catcher's sight was occl...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2421-1
更新日期：2010-10-01 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：:The projections of the medial terminal nucleus (MTN) of the accessory optic system (AOS) upon pretectal nuclei have been studied in pigmented rats by means of (i) the anterograde transport of 3H-leucine with the use of light autoradiography and (ii) the retrograde transport of horseradish peroxidase (HRP). Injections ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237218
更新日期：1982-01-01 00:00:00
abstract：:Extracellular focal synaptic potentials (FSPs) were recorded in forelimb segments of cats in the region where corticospinal volleys (pyramidal stimulation) gave a maximal FSP. No FSP was recorded in this region on stimulation of the medial part of the lateral reticular nucleus (LRN), provided that ventral spinal pathw...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235897
更新日期：1982-01-01 00:00:00
abstract：:The affect-modulated startle response is a reliable indicator of the affective processing of stimuli. It may be influenced by trait and state affective variables as well as psychopathological status. The aim of the present study was to determine the influence of the current mood state on startle modulation. Forty-five...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0653-x
更新日期：2007-02-01 00:00:00
abstract：:In three monkeys made hemianopic by unilateral striate cortical ablation, in one normal monkey and in a human hemianope (GY), we measured reaction times to chromatic targets presented in the normal hemifield as a function of prior chromatic primes in the blind field. The first of our three tasks showed an unspecific p...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1521-6
更新日期：2003-09-01 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：:It is a conservative and reasonable suggestion that implicit functioning, as in blindsight, is simply a weakened, degraded form of normal functioning, especially as the parameters of vision in blindsight are themselves weakened--e.g., acuity is reduced, detection thresholds are raised, chromatic discrimination is coar...
journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/s00221-008-1388-7
更新日期：2009-01-01 00:00:00
abstract：:Gamma oscillations of 30-70 Hz in local electroencephalograms (EEGs) were observed in primary visual cortex (V1) of monkeys when they viewed coloured stimuli under conditions which were not part of a training paradigm. No oscillatory modulations were detected in simultaneously recorded spike trains, although the latte...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210100770
更新日期：2001-07-01 00:00:00
abstract：:The topography of commissural fibers of the prefrontal cortex was studied in the rhesus monkey using autoradiography. Commissural fibers originating in the medial prefrontal and the caudal orbital regions course through the anterior portion of the genu and the rostrum of the corpus callosum, while those from the arcua...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00240516
更新日期：1984-01-01 00:00:00
abstract：:The Stroop test enables interference between color naming and reading to be studied. Protopapas et al. (2007) reported more errors in an interference task and longer reaction times in 12.5-year-old dyslexics; also more Stroop interference with lower reading skills. The present study uses a version of the Stroop with f...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2247-x
更新日期：2010-06-01 00:00:00
abstract：:The role of kinaesthetic afferences in controlling coupling of voluntary oscillation of the hand and foot, both in-phase and anti-phase, was investigated by modifying the mechanical properties of one of the two segments (the hand) with applied inertial or elastic loads. Loads consisted of a lead disk, rotating coaxial...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210100762
更新日期：2001-07-01 00:00:00
abstract：:Research in the vestibular field has revealed the existence of a central process, called 'velocity storage', that is activated by both visual and vestibular rotation cues and is modified by gravity, but whose functional relevance during natural motion has often been questioned. In this review, we explore spatial orien...
journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/s00221-011-2568-4
更新日期：2011-05-01 00:00:00
abstract：:Although several features of brain motor function appear to be preserved even in chronic complete SCI, previous functional MRI (fMRI) studies have also identified significant derangements such as a strongly reduced volume of activation, a poor modulation of function and abnormal activation patterns. It might be specul...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1465-y
更新日期：2008-09-01 00:00:00
abstract：:The development of the electromyogram (EMG) of tibialis anterior (TA) and medial gastrocnemius (GM) during locomotion was studied in normal rats from the onset of quadruped walking (postnatal day 10, P10) until P42. The objectives were to relate signal properties of the EMG and coordination of muscle activity to funct...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229036
更新日期：1993-01-01 00:00:00
abstract：:When the visual background is moving while subject fixate a visual target, optokinetic eye movements (OKN) are suppressed and the after response, called optokinetic after nystagmus (OKAN), occurring at the stimuli offset is often inverted as compared to the situation when the OKN movements are allowed. In this study, ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1595-2
更新日期：2009-02-01 00:00:00
abstract：:We investigated anatomical and physiological properties of the projection from the pretectal nuclear complex (PNC) to the ipsilateral lateral posterior-pulvinar complex in the cat. After Phaseolus vulgaris leucoagglutinin injections into the PNC, the majority (70%) of anterogradely labeled terminals was localized in t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210100738
更新日期：2001-06-01 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：:Some experimental evidence suggests that grasping should be regarded as independent control of the thumb and the index finger (digit control hypothesis). To investigate this further, we compared how the tips of the thumb and the index finger moved in space when grasping spheres to how they moved when they were hitting...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2756-2
更新日期：2011-08-01 00:00:00
abstract：:Dynamic changes of deficits in canal and otolith vestibulo-ocular reflexes (VORs) to high acceleration, eccentric yaw rotations were investigated in five subjects aged 25-65 years before and at frequent intervals 3-451 days following unilateral vestibular deafferentation (UVD) due to labyrinthectomy or vestibular neur...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0761-7
更新日期：2007-04-01 00:00:00
abstract：:The present study investigated how valence, arousal, and subjective liking of music affect visually induced motion sickness (VIMS). VIMS is a common side effect when interacting with virtual environments, resulting in discomfort, dizziness, and/or nausea. Music has previously been shown to reduce VIMS, but the precise...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05871-2
更新日期：2020-10-01 00:00:00
abstract：:Postischemic spontaneous hyperthermia as a complication of occlusion of the middle cerebral artery with an intraluminal filament has been observed by some authors, but many other reports do not discuss this factor. The possible reasons why some of the authors have not seen severe hyperthermia in their experiments incl...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-001-0909-4
更新日期：2002-01-01 00:00:00
abstract：:Two experiments were conducted to determine the effects of conditioned circling on the concentrations of dopamine (DA), 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) within discrete regions of the striatum (STR). The first study assessed the inherent regional distributions of these compounds with ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00247949
更新日期：1989-01-01 00:00:00
abstract：:Dementia due to cerebral ischemic lesions is relatively common in the elderly. Since many of these lesions are probably caused by emboli, studying emboli-induced cerebral lesions in rabbits should, hopefully, provide information that is useful when searching for a means of preventing and treating vascular dementia in ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050622
更新日期：1999-01-01 00:00:00
abstract：:We studied characteristics of digit action and their co-variation patterns across trials (prehension synergies) during static holding of an object while the external torque could change slowly and smoothly. The subjects held in the air an instrumented handle with an attachment that allowed a smooth change in the exter...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2799-4
更新日期：2011-09-01 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
