Abstract:
:Previous studies of spatial and temporal coordination between human mandibular and head-neck movements during single as well as rhythmic jaw opening-closing tasks suggest that these movements are regulated by central nervous commands common for jaw and neck muscles. The present study evaluated the spatiotemporal consistency of concomitant mandibular and head-neck movements during repeated single jaw opening-closing tasks, in short- as well as long-term perspectives and at different speeds. The subjects were seated in an upright position without head support. They were instructed to perform single maximal jaw opening-closing movements, repeated ten times for fast and slow speed, respectively. Recordings were made at two sessions. A wireless optoelectronic technique was used to record three-dimensional mandibular and head-neck movements. The spatiotemporal consistency of repeated movement trajectories of the mandible (both in relation to the head and in space) and of the head-neck was quantitatively assessed by a spatiotemporal index (STI). In addition, mean movement trajectory patterns were compared for speed and recording sessions (expressed as correlation coefficient, r). The results showed relatively small STI (high degree of spatiotemporal consistency) and high r (reproducible trajectory patterns) values, both in short- and long-term perspectives, for concomitant mandibular and head-neck movements. The data were not generally speed related. In conclusion, the present results suggest a high degree of spatiotemporal consistency of the kinematic patterns of mandibular and head-neck movements during jaw opening-closing, in short- as well as long-term perspectives. They also indicate that underlying neural processes are invariant in nature. The results give further support to the notion of a tight functional coupling between the human jaw and the neck motor systems during natural jaw function.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Zafar H,Nordh E,Eriksson POdoi
10.1007/s00221-002-1157-ykeywords:
subject
Has Abstractpub_date
2002-09-01 00:00:00pages
70-6issue
1eissn
0014-4819issn
1432-1106journal_volume
146pub_type
临床试验,杂志文章abstract:OBJECTIVE:Restoration of somatosensory deficits in humans requires a clear understanding of the neural representations of percepts. To characterize the cortical response to naturalistic somatosensation, we examined field potentials in the primary somatosensory cortex of humans. METHODS:Four patients with intractable e...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-019-05495-1
更新日期:2019-05-01 00:00:00
abstract::Quantitative autoradiography was used to investigate the distribution and effects of gonadal hormones on [3H] muscimol (specific GABAA receptor ligand) binding in the male Japanese quail brain. In gonadally intact Japanese quail brains, [3H] muscimol revealed a heterogeneous distribution with high GABAA receptor level...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00227088
更新日期:1991-01-01 00:00:00
abstract::Multisensory integration is known to create a more robust and reliable perceptual representation of one's environment. Specifically, a congruent auditory input can make a visual stimulus more salient, consequently enhancing the visibility and detection of the visual target. However, it remains largely unknown whether ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-016-4591-y
更新日期:2016-05-01 00:00:00
abstract::The aim of this study was to investigate, in healthy subjects, the modulation of amplitude and phase precision of the auditory steady-state response (ASSR) to 40 Hz stimulation in two resting conditions varying in the level of arousal. Previously, ASSR measures have shown to be affected by the level of arousal, but th...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-007-1111-0
更新日期:2007-10-01 00:00:00
abstract::Double-labeling combined with elution-restaining immunofluorescence techniques were used to analyze the extent of coexistence among the peptides cholecystokinin (CCK), peptide histidine-isoleucine (PHI)/vasoactive intestinal polypeptide (VIP), substance P and the catecholamine-synthesizing enzyme tyrosine hydroxylase ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00250598
更新日期:1988-01-01 00:00:00
abstract::While mechanisms of orienting attention in unilateral spatial neglect (USN) have frequently been studied in the visual domain, these mechanisms remain relatively unexplored in the auditory domain. Our first goal was to replicate Spence and Driver's (J Exp Psychol Hum 22:1005-1030, 1994) results with a virtual reality ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-016-4691-8
更新日期:2016-10-01 00:00:00
abstract::The present experiments were designed to investigate the neuronal mechanisms, at the level of the primary somatosensory cortex, which underlie the observation that somatosensory cortical potentials evoked by air puff stimuli directed at the forearm are decreased, in a nonspecific and widespread manner, during voluntar...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00231455
更新日期:1991-01-01 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::Descending control is critically important for the generation of locomotor activities. Yet, our understanding of the descending control system of locomotion is limited. We hypothesized that stimulation of the ventrolateral funiculus (VLF) induces rhythmic activity in lumbar neurons that is correlated with locomotor-li...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-011-2816-7
更新日期:2011-09-01 00:00:00
abstract::Gait is recognized as a key item related to mental function. Anomalous gait in psychotic individuals has been described for the lower extremities, whereas irregularities for upper body dynamics are not described, explained or verified with unbiased methods. Reduced walking velocity and increased somatic tension define...
journal_title:Experimental brain research
pub_type: 临床试验,杂志文章
doi:10.1007/s00221-012-3184-7
更新日期:2012-09-01 00:00:00
abstract::The blood-brain barrier hinders progress in the chemotherapy of brain tumors due to insufficient penetration of anticancer drugs into the brain tissue. Short-chain alkylglycerols affect the physicochemical properties of biological membranes. The enhancement of the blood-brain barrier permeability by intra-arterial adm...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210000553
更新日期:2000-12-01 00:00:00
abstract::We tested the hypothesis that some of the electromyographic (EMG) responses elicited in preactivated forearm muscles by transcranial stimulation of the human motor cortex are produced by activity in a disynaptic corticospinal linkage involving propriospinal-like interneurones with cell bodies in the spinal C3-4 segmen...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00229634
更新日期:1996-06-01 00:00:00
abstract::We investigated a double-label 2-DG protocol and method of analysis in which sequential injections of 3H- and 14C-2-DG were used to map brain metabolism during two distinct experimental treatments in the same animal. In initial studies, brain sections from rats given only 3H-2-DG or only 14C-2-DG were exposed on Ultro...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00270687
更新日期:1987-01-01 00:00:00
abstract::Hyper-gravity provides a unique environment to study how misperceptions impact control of orientation relative to gravity. Previous studies have found that static and dynamic roll tilts are perceptually overestimated in hyper-gravity. The current investigation quantifies how this influences control of orientation. We ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-015-4215-y
更新日期:2015-05-01 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::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::The effects of L-DOPA, naloxone, and the opioids (D-Ala2,N-Me-Phe4,Gly5-ol)-enkephalin (DAGO) and D-Ser2-Leu-enkephalin-Thr6 (DSLET) on spinal motor rhythm generation were compared in anemically decapitated high spinal cats. After premedication with nialamide, DOPA caused the well-known, slow rhythmic motor activity w...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00241493
更新日期:1995-01-01 00:00:00
abstract::The latency of eye movements is influenced by the fixation task; when the fixation stimulus is switched off before the target presentation (gap paradigm) the latency becomes short and express movements occur. In contrast, when the fixation stimulus remains on when the target appears (overlap paradigm), eye movement la...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-005-2214-0
更新日期:2005-07-01 00:00:00
abstract::The present study investigated age-related changes in the attentional demands associated with interlimb coordination involving upper and lower limbs performed at three different movement frequencies. Younger and older adults performed rhythmical, 180° out-of-phase flexion-extension movements of the knee and elbow with...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3511-7
更新日期:2013-06-01 00:00:00
abstract::The desire to increase rewards and minimize punishing events is a powerful driver in behaviour. Here, we assess how the value of a location affects subsequent deployment of goal-directed attention as well as involuntary capture of attention on a trial-to-trial basis. By tracking eye position, we investigated whether t...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3654-6
更新日期:2013-10-01 00:00:00
abstract::The aim of this study was to evaluate the modulation of muscle activity during locomotor-like movements by different walking speeds in subjects with a motor complete spinal cord injury (SCI) compared to actively--and passively-walking control subjects without neurological deficit. Stepping movements on a treadmill wer...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0509-4
更新日期:2006-10-01 00:00:00
abstract::Studies of movement-related cortical potentials (MRCPs) for simple movements have shown a slowly rising negativity (Bereitschaftspotential, or BP) about 2 s prior to movement onset, centered in the bilateral sensorimotor area. However, complex movements may elicit a different temporal and spatial distribution of this ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-005-2314-x
更新日期:2005-06-01 00:00:00
abstract::In two monkeys, we measured the initial vergence eye movements elicited by sudden forward motion on a linear sled. Animals faced a tangent screen and experienced the translation while in darkness, fixating a small, centered spot, or viewing a large-field pattern. Forward movements elicited convergent responses that we...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-002-1351-y
更新日期:2003-02-01 00:00:00
abstract::Most studies of rapid orienting gaze shifts generated by combined eye and head movements have focused on an experimental condition in which gaze displacements are started with the subject's eyes in the normal straight-ahead position in the orbit. Such an experimental approach does not permit a clear identification of ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00230204
更新日期:1993-01-01 00:00:00
abstract::Groups of pregnant rats were injected with two successive daily doses of 3H-thymidine from gestational day 12 and 13 (E12+13) until the day before parturition (E21+22) in order to label in their embryos the proliferating precursors of neurons. At 60 days of age the proportion of neurons generated (or no longer labelle...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237506
更新日期:1981-01-01 00:00:00
abstract::Abnormal automatic postural responses are thought to contribute to balance impairment in Parkinson's disease. However, because postural responses are modifiable by stance, we have speculated that some postural abnormalities in patients with Parkinson's disease are secondary to their stooped stance. We have studied thi...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050644
更新日期:1999-02-01 00:00:00
abstract::Tactile information is differentially processed over the various phases of goal-directed movements. Here, event-related potentials (ERPs) were used to investigate the neural correlates of tactile and visual information processing during movement. Participants performed goal-directed reaches for an object placed centra...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-016-4589-5
更新日期:2016-05-01 00:00:00
abstract::Inter-limb learning transfer (ILT) between the upper-limbs has been well documented, but no corresponding study of the lower limbs has been done. We investigated ILT in the lower limbs of subjects who learned to move a cursor toward targets within 800 ms using ankle movements: plantar/dorsi-flexion and inversion/evers...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-008-1547-x
更新日期:2009-01-01 00:00:00
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 re...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237546
更新日期:1980-01-01 00:00:00
abstract::Previous studies have found that attention is oriented in the direction of other people's gaze suggesting that gaze perception is related to the mechanisms of joint attention. However, the role of the perception of gaze direction on joint attention has been challenged. We investigated the effects of disrupting gaze pe...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-1706-8
更新日期:2009-04-01 00:00:00