Abstract:
INTRODUCTION:The saccadic paradigm has been used to investigate specific cortical networks involving attention. The behavioral and electrophysiological investigations of the SEM contribute significantly to the understanding of attentive patterns presented of neurological and psychiatric disorders and sports performance. OBJECTIVE:The current study aimed to investigate absolute alpha power changes in sensorimotor brain regions and the frontal eye fields during the execution of a saccadic task. METHODS:Twelve healthy volunteers (mean age: 26.25; SD: ±4.13) performed a saccadic task while the electroencephalographic signal was simultaneously recorded for the cerebral cortex electrodes. The participants were instructed to follow the LEDs with their eyes, being submitted to two different task conditions: a fixed pattern versus a random pattern. RESULTS:We found a moment main effect for the C3, C4, F3 and F4 electrodes and a condition main effect for the F3 electrode. We also found interaction between factor conditions and frontal electrodes. CONCLUSIONS:We conclude that absolute alpha power in the left frontal cortex discriminates the execution of the two stimulus presentation patterns during SEM.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Bittencourt J,Machado S,Teixeira S,Schlee G,Salles JI,Budde H,Basile LF,Nardi AE,Cagy M,Piedade R,Sack AT,Velasques B,Ribeiro Pdoi
10.1016/j.neulet.2012.06.066subject
Has Abstractpub_date
2012-08-15 00:00:00pages
148-53issue
2eissn
0304-3940issn
1872-7972pii
S0304-3940(12)00886-5journal_volume
523pub_type
杂志文章abstract::Indirect Wallerian degeneration after sectioning the infraorbital nerve, and retrograde axonal transport following injection of horseradish peroxidase (HRP) into the maxillary nerve were studied in rats. These experiments showed the existence of primary trigeminal neurons in the pars caudalis of the ipsilateral trigem...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(80)90333-x
更新日期:1980-02-01 00:00:00
abstract::Selective injection of horseradish peroxidase (HRP) into the left and median lobes (LM) and into the right and caudate (RC) lobes of the liver is followed by labeling of neuronal somata in the right and left nodose ganglia. The size distribution of the labeled neuronal population shows that the afferent neurons from t...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(85)90364-7
更新日期:1985-12-04 00:00:00
abstract::In vivo electrochemistry was used to determine the effects of locally applied raclopride (a D2 receptor antagonist) and SCH-23390 (a D1 receptor antagonist) on the clearance of locally applied dopamine in the striatum, nucleus accumbens, and medial prefrontal cortex of rats. Chronoamperometric recordings were continuo...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(94)90096-5
更新日期:1994-08-01 00:00:00
abstract::The development of supersensitivity to dopamine by striatal neurons is widely considered to be a response to interruption of dopaminergic synaptic function. However, it is not clear whether pre-existing dopaminergic innervation is in fact necessary for supersensitivity to develop. In this study, rat foetal striatal ce...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(96)12445-9
更新日期:1996-03-15 00:00:00
abstract::CSF-A beta 42 may be a marker of Alzheimer's disease (AD). A decreased level of CSF-A beta 42 is consistently found in AD and has been suggested to be related to the deposition of amyloid plaques in the brain. However, low CSF-A beta 42 levels have also been found in disorders devoid of plaques, for instance Creutzfel...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(01)02285-6
更新日期:2001-11-13 00:00:00
abstract::Normal rats tend to respond to a sudden burst of noise or flash of light with slightly less startle when they are engaged in active behaviour at the time of presentation. This effect is vastly more pronounced in animals with lesions of the superior colliculus. These results are taken as support for a theory implicatin...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(75)90022-1
更新日期:1975-12-01 00:00:00
abstract::Eight young males were subjected to a single blind cross-over test to see the effects of vitamin B12 (methylcobalamin; VB12) on the phase-response of the circadian melatonin rhythm to a single bright light exposure. VB12 (0.5 mg/day) or vehicle was injected intravenously at 1230 h for 11 days, which was followed by or...
journal_title:Neuroscience letters
pub_type: 临床试验,杂志文章
doi:10.1016/s0304-3940(96)13247-x
更新日期:1996-12-13 00:00:00
abstract::Advanced age, cholinergic deficit, and elevated brain levels of enkephalin are associated with sporadic Alzheimer's disease. The influence of these factors on production of amyloidogenic peptides (Abeta) is uncertain. In the present experiments, the levels of 40/42 amino acid-residue Abeta were measured in the brain c...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2010.06.010
更新日期:2010-08-09 00:00:00
abstract::The facial nucleus (FN) has been known as a motor nucleus to control the activity of the facial skeletal muscles by its efferent somatic motoneurons. Much less, however, is known about the non-motor control functions of its interneurons. The present study was designed to investigate if the interneurons of the FN parti...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2004.06.047
更新日期:2004-09-09 00:00:00
abstract::Peripheral motor nerves have revealed variability in excitability by hyperpolarizing current at specific target response levels, likely reflecting differences in the hyperpolarization-activated current (Ih). Whether such variability in Ih exists in sensory axons is yet to be established. We performed nerve excitabilit...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2012.04.065
更新日期:2012-06-19 00:00:00
abstract::Protein kinase C (PKC) pathway plays important roles in different phenomena in nervous system development. Our previous data demonstrated that phorbol 12-myristate 13-acetate (PMA) treatment, a PKC activator, for 48 h decreases retinal cells proliferation by a mechanism mediated by muscarinic receptor activation, invo...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2013.06.045
更新日期:2013-08-29 00:00:00
abstract::Neurotrophins are a family of growth factor primarily acting in the nervous system, throughout two categories of membrane receptors on the basis of their high (Trk receptors) or low (p75NTR) affinity. Both neurotrophins and Trk receptors are phylogenetically conserved and are expressed not only in the central and peri...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2014.01.031
更新日期:2014-03-20 00:00:00
abstract::It is well known that spinal glia plays a key role in the pathogenesis of pain. The present study was designed to determine the roles of spinal microglia in bee venom-induced persistent spontaneous nociception (PSN), mechanical hyperalgesia and inflammation. We determined the effects of microglia inhibitor minocycline...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2012.11.028
更新日期:2013-02-08 00:00:00
abstract::Involvement of 5-hydroxytryptaminergic (5-HT) system for aglycemia- and ischemia-induced depression of the spinal reflexes was evaluated. The monosynaptic (MSR) and polysynaptic (PSR) reflex potentials were elicited in the ventral root by stimulating the corresponding dorsal root in an isolated spinal cord from neonat...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2004.09.033
更新日期:2004-11-30 00:00:00
abstract::In the hypothalamus of androgen-insensitive testicular feminized (Tfm) mice the normal pattern of immunohistochemical staining for glial fibrillary acidic protein (GFAP) is markedly different from normal. Along the borders of the third ventricle and in the dorsomedial and arcuate nuclei, the numbers of stained astrocy...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(90)90252-5
更新日期:1990-10-02 00:00:00
abstract::We hypothesized that neuropeptides released from the peripheral terminals of primary afferents play an important role in mechanical hyperalgesia after peripheral nerve injury. Nerve injury was performed on rats with lumbar 5 spinal nerve lesion (L5 SNL), which was preceded by L5 dorsal rhizotomy (L5 DR) to avoid the p...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2004.02.043
更新日期:2004-04-29 00:00:00
abstract::RMI 12330A dose-dependently inhibits cAMP accumulation induced by PGE2 in guinea-pig superior cervical ganglion (SCG). Norepinephrine (NE) is unable to modify cAMP concentration in the same preparation. On the other hand, both PGE2 and NE block the firing discharge of guinea-pig SCG neurons elicited by electrical stim...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(82)90274-9
更新日期:1982-10-08 00:00:00
abstract::The comorbidity between migraine and depression not only provides a major treatment challenge, but also represents a heavy burden on society. However, the relationship between depression and migraine and their molecular biological mechanisms remain unclear. This study investigated the effects of depression elicited by...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2013.04.038
更新日期:2013-09-13 00:00:00
abstract::Cerebral perfusion is important in older adults as it is linked to cognitive declines. Physical activity can improve blood flow in the body but little is known about the relationship between physical activity and cerebral perfusion in older adults. In particular, no study has investigated the relation between strength...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2013.12.011
更新日期:2014-02-07 00:00:00
abstract::To investigate the role of Cl(-)-stimulated Mg(2+)-ATPase (Cl(-)-ATPase) in neurons, we examined the effects of ethacrynic acid (0.3 mM), which completely inhibits Cl(-)-ATPase on the intracellular Cl- concentrations of cultured rat hippocampal neurons, using Cl(-)-sensitive fluorescent probes. Ethacrynic acid and ATP...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(91)90512-r
更新日期:1991-12-16 00:00:00
abstract::The phenotypic manifestation of McArdle disease varies considerably from one individual to the next. The purpose of this study was to assess the possible association between the clinical severity of the disease, and each of the genotypes PYGM (R50X), ACE (I/D), AMPD1 (Q12X), PPARGC1A (G482S) and ACTN3 (R577X). We also...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2007.06.025
更新日期:2007-07-18 00:00:00
abstract::The present study was designed to determine whether a state of neuropathic pain induced by sciatic nerve ligation could alter phosphorylated-mu-opioid receptor-like immunoreactivity in the superficial dorsal horn of the mouse spinal cord. Mice with sciatic nerve ligation exhibited a significant suppression of the morp...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2003.09.077
更新日期:2004-01-09 00:00:00
abstract::Effects of cortisol on 22 tuberoinfundibular (TI) neurons in the paraventricular nucleus (PVN) of the hypothalamus were examined in urethane-anesthetized rats. Iontophoretically applied cortisol excited 10 (45%) of 22 TI-neurons tested, whereas the cortisol inhibited 4 (31%) of 13 neurons in the periventricular hypoth...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(88)90141-3
更新日期:1988-04-22 00:00:00
abstract::The current study investigated the time course of the affective processing bias in major depressive disorder (MDD) in a visual three-stimulus semantic oddball task using event-related potentials (ERPs). MDD patients showed decreased P1 latency over right posterior regions to negative relative to positive target stimul...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2010.10.059
更新日期:2011-01-10 00:00:00
abstract::Periostin has dual roles as a multifunctional cytokine and an extracellular matrix protein that binds to several integrins on a variety of cells. This study evaluated whether the expression and cellular localization of periostin changes in the spinal cord of mice with experimental autoimmune encephalomyelitis (EAE), a...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2019.134558
更新日期:2020-01-10 00:00:00
abstract::Dopaminergic brain systems have been implicated to play a major role in drug reward, thus making genes involved in these circuits plausible candidates for susceptibility to substance use disorders. The cocaine- and amphetamine-regulated transcript peptide (CARTPT) is involved in reward and feeding behavior and has fun...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2008.05.073
更新日期:2008-08-08 00:00:00
abstract::That individual timing variability is correlated across some tasks but not others has instigated the notion of distinct timing processes, referred to as 'event' timing and 'emergent' timing for tasks with and without salient events, respectively. The delineation of the event-emergent framework owes much to the circle ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2010.01.047
更新日期:2010-03-12 00:00:00
abstract::The noradrenergic system modulates attention and arousal. Dysregulation of the noradrenergic system may be involved in the pathophysiology of attention-deficit/hyperactivity disorder (ADHD). This study intended to examine the differences in methylphenidate (MPH) treatment response and pre- and post-treatment cerebral ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2012.02.079
更新日期:2012-04-18 00:00:00
abstract::Size-sieved stem cells (SSCs) derived from human bone marrow have the ability to differentiate into bone, fat and cartilage. SSCs can differentiate into active neural cells after exposure to antioxidant agents. The aim of the present study is to understand if SSCs can be stimulated to differentiate into neurons in res...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2004.05.117
更新日期:2004-08-26 00:00:00
abstract::Acute urinary bladder distension (AUBD) and colorectal distension (CRD) activated mechanical afferents from the urinary bladder and colon and the activated afferent signaling affected visceral organ behavior. AUBD and CRD have been reported to affect the arterial blood pressure (ABP) response in the rat. We hypothesiz...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2008.06.063
更新日期:2008-10-10 00:00:00