Abstract:
:The ensemble properties of unit activity in the rat hippocampus were studied during different behavioral states defined by the presence or absence of the theta rhythm. A 24-channel microelectrode was used to monitor the parallel activity of several single neurons simultaneously. Individual units were characterized by waveform, firing repertoire and firing relation to theta phase. Group patterns were characterized by multiple cross-correlations at different temporal resolutions during the presence and absence of the theta rhythm. Coactivation of units was frequently observed at a fine temporal resolution under both theta and non-theta states. In addition rhythmic synchronization of units was observed at a broader temporal resolution and was selective to the theta state. The combined findings suggest that the theta rhythm signifies a powerful patterning of group activity imposed upon a fixed connectivity of neighboring neurons.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Kuperstein M,Eichenbaum H,VanDeMark Tdoi
10.1007/BF00239532subject
Has Abstractpub_date
1986-01-01 00:00:00pages
438-42issue
2eissn
0014-4819issn
1432-1106journal_volume
61pub_type
杂志文章abstract::Discrimination learning can cause improved and worsened ability to perceive differences. This subsequently affects how stimuli are associated with meanings and behaviors. Here, human listeners were trained with frequency-modulated (FM) tonal sweeps (500-1000 Hz) in a paradigm where one FM rate (8.29 octaves per second...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-016-4866-3
更新日期:2017-04-01 00:00:00
abstract::According to the peak and decline model divergent thinking declines at a specific age (in or after middle age). However, if divergent thinking declines steadily in aging still has to be clarified. In order to explore the age-related changes in verbal and visual divergent thinking, in the present study a sample of 159 ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-016-4857-4
更新日期:2017-04-01 00:00:00
abstract::Human observers are experts at visual face recognition due to specialized visual mechanisms for face processing that evolve with perceptual expertize. Such expertize has long been attributed to the use of configural processing, enabled by fast, parallel information encoding of the visual information in the face. Here ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3463-y
更新日期:2013-05-01 00:00:00
abstract::Identifying a stimulus as the target for a goal-directed movement involves inhibiting competing responses. Separable inhibitory interconnections bias local competition to ensure only one stimulus is selected and to alter movement initiation. Behavioural evidence of these inhibitory processes comes from the effects of ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-008-1645-9
更新日期:2009-03-01 00:00:00
abstract::Pontine omnipause neurons (OPNs) have so far been considered as forming a homogeneous group of neurons whose tonic firing stops during the duration of saccades, when the head is immobilized. In cats, they pause for the total duration of gaze shifts, when the head is free to move. In the present study, carried out on a...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050685
更新日期:1999-04-01 00:00:00
abstract::Light touch of the index finger with a stationary surface at non-mechanically supportive force levels (<100 g) greatly attenuates the body sway of standing subjects. In three experiments, we evaluated the properties of finger contact and of the contacted object necessary to produce postural stabilization in subjects s...
journal_title:Experimental brain research
pub_type: 临床试验,杂志文章
doi:10.1007/s002210100775
更新日期:2001-08-01 00:00:00
abstract::The dorsal and ventral streams model of action and perception suggests that reaching to grasp a tool for use involves integrated operation of the two streams. Few attempts have been made to test the limits of this integration in normal subjects. Twenty normal subjects reached for tools or geometric objects which were ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3501-9
更新日期:2013-06-01 00:00:00
abstract::The axonal conduction latency of brisk-sustained and brisk-transient cat retinal ganglion cells increases with proximity to the area centralis. The trend is gradual with considerable local scatter of latencies, and is similar for cells with crossed and uncrossed axons. ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00238731
更新日期:1975-07-11 00:00:00
abstract::Two components of long-term potentiation (LTP) are distinguished with extracellular recording electrodes: a synaptic and an EPSP-Spike (E-S) component. The latter consists of the enhancement produced in the population spike amplitude in excess of that predicted by EPSP potentiation alone. The experiments carried out i...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00229331
更新日期:1990-01-01 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::The latencies of visually-evoked responses from X- and Y-type neurons of the cat's dorsal lateral geniculate nucleus were measured in a manner that takes account of the inherent variability of discharge in these cells. Latencies measured in this way vary from trial to trial in one cell (and also between cells) by tens...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00235998
更新日期:1987-01-01 00:00:00
abstract::In order to assess the autoinhibitory control of endogenous acetylcholine (ACh) in rat and human neocortex, slices of these tissues were prelabelled with [(3)H]choline, superfused continuously and stimulated electrically using various frequencies in the presence or absence of drugs. The autoinhibitory feedback control...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050858
更新日期:1999-10-01 00:00:00
abstract::The brain noradrenaline (NA) system is known to modulate ischemic neuronal damage, and the turnover of NA has been suggested to increase in the early recovery period following cerebral ischemia. Using HPLC and gas chromatography-mass spectrometry we analyzed the tissue levels of NA and its metabolites, 3,4-dihydroxyph...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00230938
更新日期:1992-01-01 00:00:00
abstract::Responses to binocular visual stimulation were compared in cortical area 18 of normal cats and in cats in which one eye was exodeviated by surgery early in postnatal life. In contrast to normal cats where most units (58%) were binocularly activated, relatively few units (10%) in strabismic cats were activated well by ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00238169
更新日期:1984-01-01 00:00:00
abstract::Unilateral lesions of the right superior colliculus (SC) were made in hamsters on the day after birth. In order to quantify the extent of abnormal innervation by left eye fibers in the diencephalon and midbrain, the left eye was removed on postnatal day 12 or 36, and after an appropriate survival time, the brains were...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00406608
更新日期:1988-01-01 00:00:00
abstract::The activity of 28 cells located mainly in the secondary auditory cortex (A II) of awake squirrel-monkeys, was extracellularly recorded for periods of up to 6 h. Seven different species-specific vocalizations, which were repeatedly presented to the monkey, were used as auditory stimuli. Twenty-six cells responded, at ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00239144
更新日期:1979-02-15 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 study was conducted to investigate the difference between Han Chinese and Caucasians on various parameters measured from responses to transcranial magnetic brain stimulation (TMS). Sixteen subjects were studied in each group. A circular coil at the vertex was used for stimulation, whilst recording surface electrom...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3763-2
更新日期:2014-02-01 00:00:00
abstract::The line bisection task--commonly used as a clinical measure of unilateral neglect--requires participants to place a mark on a horizontal line to indicate where they think centre is. In general, results suggest that the allocation of attention mediates bisection. In addition, previous research shows that participants ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-010-2449-2
更新日期:2010-12-01 00:00:00
abstract::Long-range tactile masking has been reported between mirror symmetric body locations. This suggests a general principle of contralateral inhibition between corresponding points on each side of the body that may serve to enhance distinguishing touches on the two halves of the body. Do such effects occur before or after...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-015-4485-4
更新日期:2016-02-01 00:00:00
abstract::The horizontal and vertical components of the positions of both eyes of rhesus monkeys were measured during periods of binocularly stable eye positions (eye pauses) while the animals fixated a small target. Differences between monocular and binocular viewing, as well as effects of target size and background illuminati...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00236231
更新日期:1984-01-01 00:00:00
abstract::Limitations in visual working memory (VWM) have been extensively studied in psychophysical tasks, but not well understood in terms of how these memory limits translate to performance in more natural domains. For example, in reaching to grasp an object based on a spatial memory representation, overshooting the intended...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-016-4553-4
更新日期:2016-06-01 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::It is known that arbitrary target accelerations along the horizontal generally are extrapolated much less accurately than target speed through a visual occlusion. The extent to which vertical accelerations can be extrapolated through an occlusion is much less understood. Here, we presented a virtual target rapidly des...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-2041-9
更新日期:2010-03-01 00:00:00
abstract::The acquisition of co-ordination between posture and movement was investigated in human subjects performing a load lifting task. Sitting subjects held their left (postural) forearm in a horizontal position while supporting a 1 kg load via an electromagnet. Perturbation of the postural forearm position consisted of the...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00274991
更新日期:1989-01-01 00:00:00
abstract::In four monkeys with long-standing partial ablation of the striate cortex pellets of horseradish peroxidase were placed in either the striate cortex immediately adjacent to the ablation, or in the extrastriate cortex of the ventral prelunate gyrus, i.e. in visual area V4. We examined the dorsal lateral geniculate nucl...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00249914
更新日期:1989-01-01 00:00:00
abstract::The amyloid precursor protein (APP) has a pivotal role in pathogenesis of Alzheimer's disease (AD) via its beta- and gamma-secretase-derived cleavage products--the A-beta peptides. An alternative processing pathway provided by the alpha-secretase prevents formation of those toxic peptides and gives rise to the neurotr...
journal_title:Experimental brain research
pub_type: 杂志文章,评审
doi:10.1007/s00221-011-2885-7
更新日期:2012-04-01 00:00:00
abstract::The hypothesis that anticipatory postural adjustments (APAs) may concur in generating the directional preference experienced during limb coupled movements was tested by measuring the electromyographic and mechanic postural actions elicited when moving: (1) one single arm/hand and, (2) both limbs, iso- or antidirection...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-008-1470-1
更新日期:2008-09-01 00:00:00
abstract::Previous studies have found that affective states with high motivational intensity narrow attentional scope, whereas affective states with low motivational intensity broaden attentional scope. This conclusion, however, is based on fragmented evidence based on several separate studies. The present study tests this conc...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-014-4014-x
更新日期:2014-10-01 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