Abstract:
:We investigated whether the differences in perceptual awareness for stimuli at the threshold of awareness can arise from different global brain states before stimulus onset indexed by the EEG microstate. We used a metacontrast backward masking paradigm in which subjects had to discriminate between two weak stimuli and obtained measures of accuracy and awareness while their EEG was recorded from 256 channels. Comparing targets that were correctly identified with and without awareness allowed us to contrast differences in awareness while keeping performance constant for identical physical stimuli. Two distinct pre-stimulus scalp potential fields (microstate maps) dissociated correct identification with and without awareness, and their estimated intracranial generators were stronger in primary visual cortex before correct identification without awareness. This difference in activity cannot be explained by differences in alpha power or phase which were less reliably linked with differential pre-stimulus activation of primary visual cortex. Our results shed a new light on the function of pre-stimulus activity in early visual cortex in visual awareness and emphasize the importance of trial-by-trials analysis of the spatial configuration of the scalp potential field identified with multichannel EEG.
journal_name
Front Behav Neuroscijournal_title
Frontiers in behavioral neuroscienceauthors
Britz J,Díaz Hernàndez L,Ro T,Michel CMdoi
10.3389/fnbeh.2014.00163subject
Has Abstractpub_date
2014-05-14 00:00:00pages
163issn
1662-5153journal_volume
8pub_type
杂志文章abstract::This study analyzed ethanol intake in male and female Wistar rats exposed to maternal separation (MS) during infancy (postnatal days 1-21, PD1-21) and environmental enrichment (EE) during adolescence (PD 21-42). Previous work revealed that MS enhances ethanol consumption during adulthood. It is still unknown if a simi...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2016.00195
更新日期:2016-10-13 00:00:00
abstract::Endogenous and exogenous cannabinoids bind to central cannabinoid receptors to control a multitude of behavioral functions, including aggression. The first main objective of this review is to dissect components of the endocannabinoid system, including cannabinoid 1 and cannabinoid 2 receptors; the endogenous cannabino...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fnbeh.2018.00041
更新日期:2018-03-27 00:00:00
abstract::The ability to reappraise the emotional impact of events is related to long-term mental health. Self-focused reappraisal (REAPPself), i.e., reducing the personal relevance of the negative events, has been previously associated with neural activity in regions near right medial prefrontal cortex, but rarely investigated...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2014.00165
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abstract::Recent research suggests that conceptual or emotional factors could influence the perceptual processing of stimuli. In this article, we aimed to evaluate the effect of social information (positive, negative, or no information related to the character of the target) on subjective (perceived and felt valence and arousal...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2017.00231
更新日期:2018-01-09 00:00:00
abstract::The increased understanding that neuropathology begins decades before symptom onset, has led to the conceptualization and widespread utilization of Mild Cognitive Impairment (MCI) as an important transitional state between healthy aging and dementia. Further subcategorization to MCI subtype has led to more distinct pr...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2019.00259
更新日期:2019-11-21 00:00:00
abstract::In a conventional view of motor control, the human brain might employ an optimization principle that leads a stereotypical motor behavior which we observe as an averaged behavioral data over subjects. In this scenario, the inter-individual motor variability is considered as an observation noise. Here, we challenged th...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2019.00028
更新日期:2019-03-06 00:00:00
abstract::Dysregulations in the brain serotonergic system and exposure to environmental stressors have been implicated in the development of major depressive disorder. Here, we investigate the interactions between the stress and serotonergic systems by characterizing the behavioral and biochemical effects of chronic stress appl...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2015.00094
更新日期:2015-04-27 00:00:00
abstract::Aggressive behavior is thought to divide into two motivational elements: The first being a self-defensively motivated aggression against threat and a second, hedonically motivated "appetitive" aggression. Appetitive aggression is the less understood of the two, often only researched within abnormal psychology. Our app...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2014.00425
更新日期:2014-12-09 00:00:00
abstract::Over the last years, there has been a resurge in the interest to study the relationship between interoception and emotion. By now, it is well established that interoception contributes to the experience of emotions. However, it may also be possible that interoception contributes to the regulation of emotions. To test ...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2020.00067
更新日期:2020-06-23 00:00:00
abstract::In animals, emotional memory is classically assessed through pavlovian fear conditioning in which a neutral novel stimulus (conditioned stimulus) is paired with an aversive unconditioned stimulus. After conditioning, the conditioned stimulus elicits a fear response characterized by a wide range of behavioral and physi...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2011.00025
更新日期:2011-05-19 00:00:00
abstract::A developing literature explores the use of neurofeedback in the treatment of a range of clinical conditions, particularly ADHD and epilepsy, whilst neurofeedback also provides an experimental tool for studying the functional significance of endogenous brain activity. A critical component of any neurofeedback method i...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2014.00373
更新日期:2014-10-22 00:00:00
abstract::Colony coherence is essential for eusocial insects because it supports the inclusive fitness of colony members. Ants quickly and reliably recognize who belongs to the colony (nestmates) and who is an outsider (non-nestmates) based on chemical recognition cues (cuticular hydrocarbons: CHCs) which as a whole constitute ...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2018.00191
更新日期:2018-08-29 00:00:00
abstract::According to recent WHO reports, alcohol remains the number one substance used and abused by adolescents, despite public health efforts to curb its use. Adolescence is a critical period of biological maturation where brain development, particularly the mesocorticolimbic dopamine system, undergoes substantial remodelin...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2017.00134
更新日期:2017-07-25 00:00:00
abstract::Prior studies have shown that intermittent noxious stimulation has divergent effects on spinal cord plasticity depending upon whether it occurs in a regular (fixed time, FT) or irregular (variable time, VT) manner: In spinally transected animals, VT stimulation to the tail or hind leg impaired spinal learning whereas ...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2015.00274
更新日期:2015-10-21 00:00:00
abstract::Clinical and experimental studies suggest possible risks associated with the repeated administration of benzodiazepines (BZDs) during the prenatal or early postnatal period on further development and behavior. In the present study, we assess short- and long-term effects of early exposure to clonazepam (CZP) on cogniti...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2014.00101
更新日期:2014-03-28 00:00:00
abstract::When stepping onto a stopped escalator, we often perceive an "odd sensation" that is never felt when stepping onto stairs. The sight of an escalator provides a strong contextual cue that, in expectation of the backward acceleration when stepping on, triggers an anticipatory forward postural adjustment driven by a habi...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2014.00077
更新日期:2014-03-20 00:00:00
abstract::Major depression (MD) is one of the most common psychiatric disorders, severely affecting the quality of life of millions of people worldwide. Despite the availability of several classes of antidepressants, treatment efficacy is still very variable and many patients do not respond to the treatment. Clomipramine (CMI),...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2014.00445
更新日期:2015-01-06 00:00:00
abstract::Emerging data suggest that alcohol's effects on central inflammatory factors are not uniform across the lifespan. In particular, prenatal alcohol exposure (PAE) significantly alters steady-state levels of neuroimmune factors, as well as subsequent reactivity to later immune challenge. Thus, the current experiment inve...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2020.00082
更新日期:2020-06-29 00:00:00
abstract::Damage involving the anterior thalamic and adjacent rostral thalamic nuclei may result in a severe anterograde amnesia, similar to the amnesia resulting from damage to the hippocampal formation. Little is known, however, about the information represented in these nuclei. To redress this deficit, we recorded units in t...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2015.00256
更新日期:2015-10-13 00:00:00
abstract::Stereotactic surgery is a widely used procedure in neuroscience research to study the brain's regulation of feeding behavior. In line with this notion, this study aims to assess how food consumption and feeding patterns are affected in response to the use of auditory bars that preserve or damage the tympanic membrane ...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2020.591204
更新日期:2020-12-01 00:00:00
abstract::Discrete populations of brain cells signal differing types of spatial information. These "spatial cells" are largely confined to a closely-connected network of sites. We describe here, for the first time, cells in the anterior claustrum of the freely-moving rat encoding place, boundary and object information. This nov...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2015.00250
更新日期:2015-10-14 00:00:00
abstract::Once acquired, a fearful memory can persist for a lifetime. Although learned fear can be extinguished, extinction memories are fragile. The resilience of fear memories to extinction may contribute to the maintenance of disorders of fear and anxiety, including post-traumatic stress disorder (PTSD). As such, considerabl...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fnbeh.2015.00298
更新日期:2015-11-09 00:00:00
abstract::Although gene-environment interactions are known to significantly influence psychopathology-related disease states, only few animal models cover both the genetic background and environmental manipulations. Therefore, we have taken advantage of the bidirectionally inbred high (HAB) and low (LAB) anxiety-related behavio...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2014.00087
更新日期:2014-03-18 00:00:00
abstract:BACKGROUND:Alcohol consumption during pregnancy and lactation induces detrimental consequences, that are not limited to the direct in utero effects of the drug on fetuses, but extend to maternal care. However, the occurrence and severity of alcohol toxicity are related to the drinking pattern and the time of exposure. ...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2016.00031
更新日期:2016-03-03 00:00:00
abstract::Beneficial molecular and neuroplastic changes have been demonstrated in response to environmental enrichment (EE) in laboratory animals across the lifespan. Here, we investigated whether these effects extend to C-type Natriuretic Peptide (CNP), a widely expressed neuropeptide with putative involvement in neuroprotecti...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2018.00142
更新日期:2018-07-19 00:00:00
abstract::PAOPA, a potent analog of prolyl-leucyl-glycinamide, has shown therapeutic potential at the preclinical stage for dopaminergic related illnesses, including animal models of schizophrenia, Parkinson's disease and haloperidol-induced extrapyramidal movement disorders. PAOPA's unique allosteric mechanism and dopamine D2 ...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2018.00302
更新日期:2018-12-12 00:00:00
abstract::This study investigated the effects of early institutional care on memory and executive functioning. Subjects were participants in the Bucharest Early Intervention Project (BEIP) and included institutionalized children, children with a history of institutionalization who were assigned to a foster care intervention, an...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/neuro.08.016.2009
更新日期:2009-09-01 00:00:00
abstract::Anxiety is of paramount importance for animals, as it allows assessment of the environment while minimizing exposure to potential threats. Furthermore, anxiety disorders are highly prevalent. Consequently, the neural circuitry underlying anxiety has been a topic of great interest. In this mini review, we will discuss ...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fnbeh.2014.00112
更新日期:2014-04-01 00:00:00
abstract::Environmental enrichment (EE) is an experimental setting broadly used for investigating the effects of complex social, cognitive, and sensorimotor stimulations on brain structure and function. Recent studies point out that parental EE experience, even occurring in the pre-reproductive phase, affects neural development...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2017.00073
更新日期:2017-05-09 00:00:00
abstract::Environmental enrichment produces protective addiction and depression phenotypes in rats. ΔFosB is a transcription factor that regulates reward in the brain and is induced by psychological stress as well as drugs of abuse. However, the role played by ΔFosB in the protective phenotypes of environmental enrichment has n...
journal_title:Frontiers in behavioral neuroscience
pub_type: 杂志文章
doi:10.3389/fnbeh.2014.00297
更新日期:2014-08-29 00:00:00