Abstract：
:We previously described significant relationships between amplitude variations in slow brain potentials and timed between-press intervals (2.5 s). We suggested that these variations are neural traces of timing mechanisms. To determine which time processing stage is concerned, the current study examines whether these variations result from trial-to-trial memory updating controlled by feedback or from memory consolidation. EEG surface Laplacians (SL) were computed from the first trial on, with feedback (condition 1) and after feedback suppression (condition 2). Performance-dependent variations were related to the individual memory traces revealed by condition 2. As in our previous data, they were restricted to a site overlying the supplementary motor area (SMA). The data suggest that the SMA subserves timing functions, involving memory consolidation and cumulative activation processes as described by current models.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Macar F,Vidal Fdoi
10.1007/s00221-002-1103-zkeywords:
subject
Has Abstractpub_date
2002-08-01 00:00:00pages
403-6issue
3eissn
0014-4819issn
1432-1106journal_volume
145pub_type
杂志文章abstract：:The output from a motor nucleus is determined by the synaptic input to the motor neurons and their intrinsic properties. Here, we explore whether the source of synaptic inputs to the motor neurons (cats) and the age or post-stroke conditions (humans) may change the recruitment gain of the motor neuron pool. In cats, t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-019-05628-6
更新日期：2019-11-01 00:00:00
abstract：:The modification of the normal locomotor pattern of humans was investigated using a split-belt locomotion protocol (treadmill belt speeds of 4.5 km/h and 1.5 km/h for the right and left legs, respectively) and also by changing afferent input from the legs (30% reduction or increase in body weight by suspending subject...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/s002210050262
更新日期：1998-01-01 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：:Chronic loss of vestibular function modifies the role of neck afferents in human perception of self-motion. We characterized this change by comparing the self-motion perception of patients with chronic vestibular loss (Ps) to that of normal subjects (Ns). Stimuli consisted of sinusoidal horizontal rotations (0.025-0.4...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227147
更新日期：1993-01-01 00:00:00
abstract：:Recently, Kounios J, Frymiare JL, Bowden EM, Fleck JI, Subramaniam K, Parrish TB et al. (2006) found that the mental preparation leading to insight involves heightened activity in medial frontal areas and temporal areas. In the present study, the electrophysiological correlates of successful and unsuccessful Chinese l...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1270-7
更新日期：2008-04-01 00:00:00
abstract：:Affordance theory and behavioural dynamics have been used as theoretical constructs to explain how individuals interact with the environment in order to avoid obstacles. Features of obstacle distance and multiple obstacle avoidance have been discussed in unique studies, yet the interactions of these environmental feat...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-016-4803-5
更新日期：2017-02-01 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：:Fast cyclic movements and discrete motor acts are controlled differently, presumably because fast cyclic tasks are more automated, thereby depending on different circuits. If fast cyclic movements are made less predictable (e.g., by mixing frequencies), one would predict that their control will be less automated, requ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-013-3686-y
更新日期：2013-11-01 00:00:00
abstract：:Extracellular single-unit recordings were made during day- and night-time in the pineal gland of urethane-anesthetized adult male Sprague-Dawley rats. All cells exhibiting spontaneous electrical activity had firing frequencies from less than 1 Hz to about 100 Hz, and their discharge patterns were characterized as regu...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235276
更新日期：1984-01-01 00:00:00
abstract：:The hypoglossal nucleus (Mo12) contains motoneurons that innervate the tongue, while the motor trigeminal nucleus (Mo5) contains motoneurons that elevate or depress the mandible. Previous studies have revealed lateral and medial tegmental field neuronal afferents to the Mo12 adjacent to, but not within, the motor trig...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227237
更新日期：1992-01-01 00:00:00
abstract：:Antisaccades have not only longer latencies but also lower peak velocities than prosaccades. It is not known whether these latency and velocity differences are related. Studies of non-human primates suggest that prosaccade peak velocity declines as latency from target appearance increases. We examined whether a simila...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-004-1940-z
更新日期：2004-11-01 00:00:00
abstract：:Transcranial magnetic stimulation (TMS) applied over the occipital lobe approximately 100 ms after the onset of a stimulus decreases its visibility if it appears in the location of the phosphene. Because phosphenes can also be elicited by stimulation of the parietal regions, we asked if the same procedure that is used...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-014-3888-y
更新日期：2014-06-01 00:00:00
abstract：:In the present study, we examined the effects of explicit knowledge, obtained through instruction or spontaneous detection, on the transfer of visuomotor sequence learning. In the learning session, participants learned a visuomotor sequence, via trial and error. In the transfer session, the order of the sequence was r...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-017-4933-4
更新日期：2017-06-01 00:00:00
abstract：:Touches on one hand or forearm can affect tactile sensitivity at contralateral locations on the opposite side of the body. These interactions suggest an intimate connection between the two sides of the body. Here, we explore the effect of masking not across the body but through the body by measuring the effect of a ma...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-014-3955-4
更新日期：2014-09-01 00:00:00
abstract：:Plasticity of corticospinal tract (CST) activity likely plays a key role in motor function recovery after central nervous system (CNS) lesions. In non-injured adults, 30 min of repetitive common peroneal nerve stimulation (rCPnS) increases CST excitability by 40-50% and the effect persists for at least 30 min. The pre...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2607-1
更新日期：2011-04-01 00:00:00
abstract：:Using near infrared spectroscopy and repetitive transcranial magnetic stimulation (rTMS), we studied interhemispheric interactions between bilateral motor and sensory cortices in humans. RTMS consisted of a triple-pulse burst (50 Hz) repeated every 200 m for 2 s (10 bursts, 30 pulses); one kind of theta burst TMS (TBS...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-007-0884-5
更新日期：2007-07-01 00:00:00
abstract：:The time course of local changes of the extracellular space (ES) was investigated by measuring concentration changes of repeatedly injected tetramethylammonium (TMA+) and choline (Ch+) ions for which cell membranes are largely impermeable. After stimulus-induced extracellular [K+] elevations the delta [TMA+] and delta...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236151
更新日期：1980-01-01 00:00:00
abstract：:Structural changes of the cerebellum have been reported in several psychiatric diseases like schizophrenia, autism and attention-deficit/hyperactivity disorder (ADHD). Beside behavioral deficits children with ADHD often show slight motor abnormalities. Cerebellar malfunction may contribute. The cerebellum is a structu...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-2020-1
更新日期：2010-03-01 00:00:00
abstract：:We investigated whether the order of gaze shifts affected spatial and temporal aspects of discrete bimanual pointing movements. Ten male participants concurrently executed bimanual pointing movements as quickly and accurately as possible to left and right lateral targets presented with the same and different amplitude...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-1950-y
更新日期：2009-10-01 00:00:00
abstract：:For an understanding of how various degrees of altered use (training, disuse) affect the properties of skeletal muscles, it is important to know how much they are used normally. The main aim of the present project was to produce such background knowledge for hindlimb muscles of the cat. In four adult female cats, each...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/pl00005701
更新日期：1997-06-01 00:00:00
abstract：:The intracortical arborizations of thalamocortical fibers arising from the ventroposterolateral (VPL) nucleus in the cat were studied following intra-axonal injections of horseradish peroxidase (HRP). The axons were impaled 1.5 to 3 mm below the surface of the cortex, identified electrophysiologically by stimulating t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236304
更新日期：1987-01-01 00:00:00
abstract：:The cortical anatomical substrates by which visual information may influence the frontal areas controlling reaching movements to visual targets were studied in monkeys. A reaching task was employed to characterize the arm-related regions of the frontal lobe. Injections of retrograde tracers into these physiologically ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228707
更新日期：1993-01-01 00:00:00
abstract：:According to the size principle for motoneurons one would expect that an excitatory stimulus given to a motoneuronal pool should evoke small excitatory postsynaptic potentials (EPSPs) in large and large EPSPs in small motoneurons of the pool. In this study this expectation was tested for the motoneuron pool of the fir...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229117
更新日期：1994-01-01 00:00:00
abstract：:Olfactory neurones of Xenopus laevis were studied by the patch clamp technique under voltage-clamp conditions. Isolated receptor cells were obtained by dissociating the olfactory mucosa in a Ca(2+)-free solution. Usually some of the resulting isolated olfactory cells lost all of their cilia during the dissociation pro...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00231774
更新日期：1991-01-01 00:00:00
abstract：:After a single adaptation session to prisms with gradually incremented shift magnitude, the prism adaptation aftereffect was measured by open loop mid-sagittal pointing (O) to a visual target without visual feedback. This aftereffect corresponded to the summation of the shift in proprioception, measured by straight ah...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0381-2
更新日期：2006-08-01 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：:Weight illusions--where one object feels heavier than an identically weighted counterpart--have been the focus of many recent scientific investigations. The most famous of these illusions is the 'size-weight illusion', where a small object feels heavier than an identically weighted, but otherwise similar-looking, larg...
journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/s00221-014-3926-9
更新日期：2014-06-01 00:00:00
abstract：:The objectives of this study were to determine whether changes in electromyographic (EMG) responses observed during prolonged intracortical microstimulation (ICMS) were due to local plasticity of the motor system or to global changes in the preparation. Local effects would be expressed as changes only along the activa...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00242909
更新日期：1996-02-01 00:00:00
abstract：:The present study investigated the effect of auditory feedback on planning and control of two-segment reaching movements and eye-hand coordination. In particular, it was examined whether additional auditory information indicating the progression of the initial reach (i.e., passing the midway and contacting the target)...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-018-5366-4
更新日期：2018-12-01 00:00:00
abstract：:To explore visual space, we make saccades, vergence, and, most frequently, combined saccade-vergence eye movements. The initiation of saccades is well studied, while that of vergence is less explored. Saccade latency is influenced by the fixation task: when the target appears simultaneously with the offset of the fixa...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1670-7
更新日期：2004-02-01 00:00:00
