Abstract:
:The stochastic resonance (SR) is a phenomenon in which adding a moderate amount of noise can improve the signal-to-noise ratio and performance of non-linear systems. SR occurs in all sensory modalities including the visual system in which noise can enhance contrast detection sensitivity and the perception of ambiguous figures embedded in static scenes. Here, we explored how adding background white pixel-noise to a random dot motion (RDM) stimulus produced changes in visual motion discrimination in healthy human adults. We found that, although the average reaction times (RTs) remained constant, an intermediate level of noise improved the subjects' ability to discriminate motion direction in the RDM task. The psychophysical responses followed an inverted U-like function of the input noise, whereas the incorrect responses with short RTs did not exhibit such modulation by external noise. Moreover, by applying stimulus and noisy signals to different eyes, we found that the SR phenomenon occurred presumably in the primary visual cortex, where these two signals first converge. Our results suggest that a SR-like phenomenon mediates the improvement of visual motion perception in the RDM task.
journal_name
Front Hum Neuroscijournal_title
Frontiers in human neuroscienceauthors
Treviño M,De la Torre-Valdovinos B,Manjarrez Edoi
10.3389/fnhum.2016.00572subject
Has Abstractpub_date
2016-11-23 00:00:00pages
572issn
1662-5161journal_volume
10pub_type
杂志文章abstract:Background:Dreaming is a universal experience, yet there is considerable inter-individual variability in dream recall frequency (DRF). One dominant model, the "arousal-retrieval" model, posits that intra-sleep wakefulness is required for dream traces to be encoded into long-term storage, essentially proposing that a be...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2019.00370
更新日期:2019-10-15 00:00:00
abstract::Accurate estimates of the time-to-contact (TTC) of approaching objects are crucial for survival. We used an ecologically valid driving simulation to compare and contrast the neural substrates of egocentric (head-on approach) and allocentric (lateral approach) TTC tasks in a fully factorial, event-related fMRI design. ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/neuro.09.010.2008
更新日期:2008-09-13 00:00:00
abstract::The judgement of human ability is ubiquitous, from school admissions to job performance reviews. The exact make-up of ability traits, however, is often narrowly defined and lacks a comprehensive basis. We attempt to simplify the spectrum of human ability, similar to how five personality traits are widely believed to d...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2020.609170
更新日期:2020-12-16 00:00:00
abstract::Non-invasive assessment of hemispheric dominance for receptive language using magnetoencephalography (MEG) is now a well-established procedure used across several epilepsy centers in the context of pre-surgical evaluation of children and adults while awake, alert and attentive. However, the utility of MEG for the same...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00657
更新日期:2014-08-21 00:00:00
abstract::We studied neural correlates accompanying the Fraser spiral illusion. The Fraser spiral illusion consists of twisted cords superimposed on a patchwork background arranged in concentric circles, which is typically perceived as a spiral. We tested four displays: the Fraser spiral illusion and three variants derived from...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2015.00374
更新日期:2015-07-02 00:00:00
abstract::We used tomographic analysis of MEG signals to characterize regional spectral changes in the brain at sleep onset and during light sleep. We identified two key processes that may causally link to loss of consciousness during the quiet or "core" periods of NREM1. First, active inhibition in the frontal lobe leads to de...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2017.00313
更新日期:2017-06-16 00:00:00
abstract::The feeling of acting voluntarily is a fundamental component of human behavior and social life and is usually accompanied by a sense of agency. However, this ability can be impaired in a number of diseases and disorders. An important example is apraxia, a disturbance traditionally defined as a disorder of voluntary sk...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00751
更新日期:2014-09-23 00:00:00
abstract::Phonological awareness skills in children with reading difficulty (RD) may reflect impaired automatic integration of orthographic and phonological representations. However, little is known about the underlying neural mechanisms involved in phonological awareness for children with RD. Eighteen children with RD, ages 9-...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2019.00390
更新日期:2019-11-14 00:00:00
abstract::The triple-code model (TCM) of number processing suggests the involvement of distinct parietal cortex areas in arithmetic operations: the bilateral horizontal segment of the intraparietal sulcus (hIPS) for arithmetic operations that require the manipulation of numerical quantities (e.g., subtraction) and the left angu...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2020.00271
更新日期:2020-07-16 00:00:00
abstract::To what extent does morphological structure play a role in early processing of visually presented English past tense verbs? Previous masked priming studies have demonstrated effects of obligatory form-based decomposition for genuinely affixed words (teacher-TEACH) and pseudo-affixed words (corner-CORN), but not for or...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00798
更新日期:2013-11-22 00:00:00
abstract::Recent EEG and fMRI evidence suggests that behavioral errors are foreshadowed by systematic changes in brain activity preceding the outcome by seconds. In order to further characterize this type of error precursor activity, we investigated single-trial event-related EEG activity from 70 participants performing a modif...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2010.00065
更新日期:2010-08-10 00:00:00
abstract::Recent studies suggested that internet gaming disorder (IGD) was associated with impulsivity and structural abnormalities in brain gray matter (GM). However, no morphometric study has examined the association between GM and impulsivity in IGD individuals. In this study, 25 adolescents with IGD and 27 healthy controls ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2016.00004
更新日期:2016-01-28 00:00:00
abstract::Consistent attention and proper processing of infant faces by adults are essential for infant survival. Previous behavioral studies showed gender differences in processing infant cues (e.g., crying, laughing or facial attractiveness) and more importantly, the efforts invested in nurturing offspring. The underlying neu...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2017.00551
更新日期:2017-11-14 00:00:00
abstract::[This corrects the article DOI: 10.3389/fnhum.2015.00098.]. ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章,已发布勘误
doi:10.3389/fnhum.2019.00125
更新日期:2019-04-09 00:00:00
abstract::Background: Functional near-infrared spectroscopy (fNIRS) is a valuable neuroimaging approach for studying cortical contributions to walking function. Recruitment of prefrontal cortex during walking has been a particular area of focus in the literature. The present study investigated whether task-related change in pre...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2019.00194
更新日期:2019-06-18 00:00:00
abstract::The current study investigated the time course of the other-race classification advantage (ORCA) in the subordinate classification of normally configured faces and distorted faces by race. Slightly distorting the face configuration delayed the categorization of own-race faces and had no conspicuous effects on other-ra...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2015.00679
更新日期:2015-12-21 00:00:00
abstract::The prevalence of childhood overweight and obesity is increasing in the last decades, also in children with Cerebral Palsy (CP). Even though it has been established that an increase in weight can have important negative effects on gait in healthy adults and children, it has not been investigated what the effect is of ...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2016.00657
更新日期:2016-12-23 00:00:00
abstract::The present study used magnetoencephalography (MEG) to investigate how Spanish adult learners of Basque respond to morphosyntactic violations after a short period of training on a small fragment of Basque grammar. Participants (n = 17) were exposed to violation and control phrases in three phases (pretest, training, g...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2017.00012
更新日期:2017-01-24 00:00:00
abstract::Several studies have reported that, when subjects have to judge the laterality of rotated hand drawings, their judgment is automatically influenced by the biomechanical constraints of the upper limbs. The prominent account for this effect is that, in order to perform the task, subjects mentally rotate their upper limb...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2012.00299
更新日期:2012-11-01 00:00:00
abstract::Over the past half a century, many investigations in experimental animal have explored the functional roles of specific regions in the brainstem. Despite the accumulation of a considerable body of knowledge in, primarily, anesthetized preparations, relatively few studies have explored brainstem function in awake human...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fnhum.2013.00569
更新日期:2013-09-17 00:00:00
abstract::Brain-computer interface (BCI) systems exploit brain activity for generating a control command and may be used by individuals with severe motor disabilities as an alternative means of communication. An emerging brain monitoring modality for BCI development is transcranial Doppler ultrasonography (TCD), which facilitat...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.00199
更新日期:2014-04-22 00:00:00
abstract::Several observations suggest that overlearned ordinal categories (e.g., letters, numbers, weekdays, months) are processed differently than non-ordinal categories in the brain. In synesthesia, for example, anomalous perceptual experiences are most often triggered by members of ordinal categories (Rich et al., 2005; Eag...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2012.00328
更新日期:2012-12-20 00:00:00
abstract::Behavioral findings in several strategic games indicate that people punish others if they think they are being treated unequally, even at the cost of minimizing their own material payoff. We investigated the primary driving force behind such non-self-regarding behavior, so-called, altruistic cooperation. In all of our...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00252
更新日期:2013-06-07 00:00:00
abstract::A major feature of the human cortex is its huge morphological variability. Although a comprehensive literature about the sulco-gyral pattern of the central region is available from post-mortem data, a reliable and reproducible characterization from in vivo data is still lacking. The aim of this study is to test the re...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2016.00410
更新日期:2016-08-17 00:00:00
abstract::The elderly population in the US is increasing and projected to be 44% minority by 2060. African Americans and Hispanics are at increased risk of cognitive impairment and Alzheimer's disease compared to non-Hispanic whites. These conditions are associated with many other adverse health outcomes, lower quality of life,...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fnhum.2020.00359
更新日期:2020-09-03 00:00:00
abstract:INTRODUCTION:Preterm infants are born during critical stages of brain development, in which the adaptive capacity of the fetus to extra-uterine environment is limited. Inadequate brain perfusion has been directly linked to preterm brain damage. Advanced high-frequency ultrasound probes and processing algorithms allow v...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2014.01068
更新日期:2015-01-13 00:00:00
abstract::We present a detailed description of a set of FreeSurfer compatible segmentation guidelines tailored to infant MRI scans, and a unique data set of manually segmented acquisitions, with subjects nearly evenly distributed between 0 and 2 years of age. We believe that these segmentation guidelines and this dataset will h...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2015.00021
更新日期:2015-02-18 00:00:00
abstract::Attention facilitates the processing of task-relevant visual information and suppresses interference from task-irrelevant information. Modulations of neural activity in visual cortex depend on attention, and likely result from signals originating in fronto-parietal and cingulo-opercular regions of cortex. Here, we tes...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2015.00338
更新日期:2015-06-08 00:00:00
abstract::PREHENSION, THE CAPACITY TO REACH AND GRASP OBJECTS, COMPRISES TWO MAIN COMPONENTS: reaching, i.e., moving the hand towards an object, and grasping, i.e., shaping the hand with respect to its properties. Knowledge of this topic has gained a huge advance in recent years, dramatically changing our view on how prehension...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fnhum.2014.00686
更新日期:2014-09-09 00:00:00
abstract::It has recently been suggested that schizophrenia involves dysfunction in brain connectivity at a neural level, and a dysfunction in reward processing at a behavioral level. The purpose of the present study was to link these two levels of analyses by examining effective connectivity patterns between brain regions medi...
journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2010.00239
更新日期:2011-01-17 00:00:00