Abstract：
:It is known that attending to a cutaneous stimulus briefly increases its subjective intensity. The purpose of the present study was to determine whether an extended period of attention would produce a longer-lasting perceptual amplification. Eighty subjects were assigned alternately to experimental and control groups. Members of the two groups received identical series of tactile stimuli (near-threshold von Frey filaments applied to the forearm), but those in the experimental group carried out a two-interval forced-choice detection task that required attention to the filaments, while subjects in the control group attended instead to a video game. After this initial phase, all subjects gave magnitude estimates of the intensity of a wide range of von Frey filaments. The experimental group gave estimates 42% greater than those of the control group, both for filaments used in the initial phase, and others not presented previously; the perceptual amplification did not, however, transfer to a different type of pressure stimulus, a 5 mm-diameter rod applied to the skin. The aftereffect of sustained attention lasted for at least 15 min. This phenomenon, demonstrated in normal subjects, may have implications for the hypervigilance of some chronic pain patients, which is characterized by both heightened attention to pain and long-lasting perceptual amplification of noxious stimuli.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Hollins M,Athans Ldoi
10.1007/s00221-020-05910-ysubject
Has Abstractpub_date
2020-11-05 00:00:00eissn
0014-4819issn
1432-1106pii
10.1007/s00221-020-05910-ypub_type
杂志文章abstract：:Associations between cognitive and motor timing performance are documented in hundreds of studies. A core finding is a correlation of about - 0.3 to - 0.5 between psychometric intelligence and time interval production variability and reaction time, but the nature of the relationship remains unclear. Here, we investiga...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05780-4
更新日期：2020-04-01 00:00:00
abstract：:Several recent studies indicate that saccades elicited in the absence of a visual target are slower than visually-guided movements of the same size. In addition, we have shown earlier that the slower saccades observed in two different paradigms had more asymmetrical (skewed) velocity profiles. Recently, it has been re...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00253624
更新日期：1989-01-01 00:00:00
abstract：:The effects of left and right alignment on the Ebbinghaus illusion were investigated in three experiments. In Experiment 1, the Ebbinghaus illusion was presented on the left or right side, and the points of subjective equality (PSE) were measured. Only the central disk of the figure with small inducers was perceived l...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-018-5168-8
更新日期：2018-04-01 00:00:00
abstract：:Stimulation of cutaneous foot afferents has been shown to evoke a facilitation of the tibialis anterior (TA) EMG-activity at a latency of 70-95 ms in the early and middle swing phase of human walking. The present study investigated the underlying mechanism for this facilitation. In those subjects in whom it was possib...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050600
更新日期：1999-01-01 00:00:00
abstract：:The activity of the rat hindlimb during treadmill stepping was studied in normal adult rats and in rats in which cerebellar development was interfered with by early-postnatal focal X-irradiation. Based on cinematographic and electromyographic data from over 100 step cycles in 15 normal rats, correlations were made bet...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236145
更新日期：1980-01-01 00:00:00
abstract：:To elucidate hemispheric asymmetry in the neurophysiologic mechanisms of global and local information processing, we investigate high-density event-related potentials (ERPs) during divided and selective attention tasks based on detection of hierarchical letters whose spatial frequency is controlled. Twelve healthy mal...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-007-0948-6
更新日期：2007-08-01 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 main input of the lateral part of the cat's lateralis posterior-pulvinar complex (LP-P) comes from the primary visual cortex. We investigated the response properties of cells in area 17 projecting to the striate-recipient zone (LP1) of the cat's LP-P complex. The cells' receptive fields were stimulated with drifti...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227105
更新日期：1993-01-01 00:00:00
abstract：:(1) The responses of CA1 pyramidal cells to short glutamate pulses (10-50 ms) delivered at sensitive spots in the apical dendrites have been analysed by intracellular recording. (2) The glutamate pulses elicited stable depolarizing responses in a dose- and frequency-dependent manner. (3) When a single action potential...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228178
更新日期：1992-01-01 00:00:00
abstract：:Transcranial direct current stimulation (TDCS) is a non-invasive form of brain stimulation applied via a weak electrical current passed between electrodes on the scalp. In recent studies, TDCS has been shown to improve learning when applied to the prefrontal cortex (e.g., Kincses et al. in Neuropsychologia 42:113-117,...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2764-2
更新日期：2011-08-01 00:00:00
abstract：:Many activities of daily living involve multi-digit, voluntary rotational manipulations of grasped objects. Yet, only a few studies have focused on coordination of individual fingertip forces during such tasks. The objective of this study was to investigate individual digit contributions to a three-digit task in which...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4289-6
更新日期：2015-07-01 00:00:00
abstract：:The gain (ratio of eye velocity to head velocity) of the initial horizontal vestibulo-ocular reflex (VOR) was calculated in 12 normal subjects over 350 ms during impulsive, unpredictable whole body rotation under three conditions: (1) darkness; (2) visual enhancement of the VOR, while the subjects fixated a stationary...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/BF00239596
更新日期：1994-01-01 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：:Rare-earth elements (REEs) are applied in various fields by virtue of their superior physical and chemical properties. Surveys have reported that REEs can impair learning and memory in children and induce neurobehavioral abnormalities in animals. However, the mechanism underlying this neurotoxicity is still unclear. L...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-017-5102-5
更新日期：2017-12-01 00:00:00
abstract：:We examined the characteristics of postsynaptic potentials (PSPs) produced in antidromically-identified medical gastrocnemius (MG) alpha-motoneurons by electrical stimulation of low threshold (less than 3 x T) distal limb cutaneous afferents in the sural (SUR) nerve in adult cats anesthetized with alpha-chloralose, to...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235772
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：:Paired associative stimulation (PAS) can increase motor cortical excitability, possibly by long-term potentiation (LTP)-like mechanisms. As the capability of the cortex for plasticity decreases with age, we were interested here in testing interindividual variability and age-dependency of the PAS effect. Motor-evoked p...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1319-7
更新日期：2008-05-01 00:00:00
abstract：:The discharge frequency of primary (Ia) and secondary (II) muscle spindle afferents from the tibial anterior muscle of the cat were recorded under a ramp-and-hold stretch of the host muscle. The rate of ramp stretch and the prestretch of the muscle were varied systematically. The degree of stretch was kept constant. F...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227509
更新日期：1994-01-01 00:00:00
abstract：:Using a declarative memory paradigm, the anatomical correlates of spatial location encoding and retrieval in the healthy human brain as reflected by BOLD fMRI were investigated. During encoding, subjects were instructed to view and keep in mind different locations of an object on a platform seen from different viewpoi...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0408-8
更新日期：2006-09-01 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：:When dividing attention between the left and right sides of physical space, most individuals pay slightly more attention to the left side. This phenomenon, known as pseudoneglect, may also occur for the left and right sides of mental representations of stimuli. Representational pseudoneglect has been shown for the rec...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-016-4735-0
更新日期：2016-11-01 00:00:00
abstract：:The aim of the present study was to further investigate the contribution of primary muscle spindle feedback to proprioception and higher brain functions, such as movement trajectory recognition. For this purpose, complex illusory movements were evoked in subjects by applying patterns of muscle tendon vibration mimicki...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-0325-2
更新日期：2006-06-01 00:00:00
abstract：:To address the hypothesis that Parkinson's disease (PD) patients have deficits in controlling acceleration, a drawing task was used in which target size, frequency, and weight of pen were manipulated. In accordance with previous results, it was found that, relative to controls, PD patients produced movements at the re...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-1925-z
更新日期：2009-08-01 00:00:00
abstract：:Intracortical inhibition was investigated in normal human volunteers by paired-pulse transcranial magnetic stimulation, using a new, computer-assisted threshold-tracking method. Motor threshold was defined as the stimulus amplitude required to evoke a motor evoked potential of 0.2 mV (peak-to-peak) in abductor pollici...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-001-0988-2
更新日期：2002-03-01 00:00:00
abstract：:Conspicuous nerve-cell assemblies, identified as the marginal nuclei described in other sauropsidans, were found all along the spinal cord of turtles. gamma-aminobutyric acid (GABA) and nitric oxide synthase (NOS) activities were colocalized within these neurons, which also reacted positively to reduced nicotinamide a...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050499
更新日期：1998-09-01 00:00:00
abstract：:Cultured rat hippocampal neurons with short processes were investigated using the whole cell voltage clamp under conditions appropriate for isolating Na+ currents. After incubation of the neuron culture for a period of 15-30 min in 1 mM sodium valproate, several parameters of the Na+ current were changed. The peak Na+...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228395
更新日期：1993-01-01 00:00:00
abstract：:A wealth of evidence implicates the crossed descending projection from the superior colliculus (SC) in orientation and approach behaviours directed towards novel, non-noxious stimuli. In our preceding paper, we identified a population of nociceptive neurones in the rat SC that have axons that project to the contralate...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00231781
更新日期：1996-05-01 00:00:00
abstract：:Flexible and stable postural control requires adaptation to changing environmental conditions, a process which requires re-weighting of multisensory stimuli. Recent studies, as well as predictions from a computational model, have indicated a reciprocal re-weighting relationship between modalities when a sensory stimul...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3244-z
更新日期：2012-11-01 00:00:00
abstract：:Using combined psychophysics and event-related potentials (ERPs), we investigated the effect of perceptual learning on face gender discrimination and probe the neural correlates of the learning effect. Human subjects were trained to perform a gender discrimination task with male or female faces. Before and after train...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3396-x
更新日期：2013-04-01 00:00:00
abstract：:The use of arm weight support (WS) to optimize movement quality may be an avenue for improved upper limb stroke rehabilitation; however, the underlying neurophysiological effects of WS are not well understood. Rehabilitation exercises may be performed when sitting or standing, but the interaction of posture with WS ha...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-016-4775-5
更新日期：2017-01-01 00:00:00
