Base de dados : MEDLINE
Pesquisa : G07.265.216.500.350 [Categoria DeCS]
Referências encontradas : 3012 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 302 ir para página                         

  1 / 3012 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29304065
[Au] Autor:Pinto N; Duarte M; Gonçalves H; Silva R; Gama J; Pato MV
[Ad] Endereço:CICS-Health Sciences Research Centre, Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal.
[Ti] Título:Bilateral theta-burst magnetic stimulation influence on event-related brain potentials.
[So] Source:PLoS One;13(1):e0190693, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Theta-burst stimulation (TBS) can be a non-invasive technique to modulate cognitive functions, with promising therapeutic potential, but with some contradictory results. Event related potentials are used as a marker of brain deterioration and can be used to evaluate TBS-related cognitive performance, but its use remains scant. This study aimed to study bilateral inhibitory and excitatory TBS effects upon neurocognitive performance of young healthy volunteers, using the auditory P300' results. Using a double-blind sham-controlled study, 51 healthy volunteers were randomly assigned to five different groups, two submitted to either excitatory (iTBS) or inhibitory (cTBS) stimulation over the left dorsolateral pre-frontal cortex (DLPFC), two other actively stimulated the right DLPFC and finally a sham stimulation group. An oddball based auditory P300 was performed just before a single session of iTBS, cTBS or sham stimulation and repeated immediately after. P300 mean latency comparison between the pre- and post-TBS stimulation stages revealed significantly faster post stimulation latencies only when iTBS was performed on the left hemisphere (p = 0.003). Right and left hemisphere cTBS significantly delayed P300 latency (right p = 0.026; left p = 0.000). Multiple comparisons for N200 showed slower latencies after iTBS over the right hemisphere. No significant difference was found in amplitude variation. TBS appears to effectively influence neural networking involved in P300 formation, but effects seem distinct for iTBS vs cTBS and for the right or the left hemisphere. P300 evoked potentials can be an effective and practical tool to evaluate transcranial magnetic stimulation related outcomes.
[Mh] Termos MeSH primário: Encéfalo/fisiologia
Potencial Evocado P300
Estimulação Magnética Transcraniana/métodos
[Mh] Termos MeSH secundário: Adolescente
Adulto
Método Duplo-Cego
Feminino
Seres Humanos
Masculino
Tempo de Reação
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180106
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190693


  2 / 3012 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29283998
[Au] Autor:Lin Z; Zeng Y; Tong L; Zhang H; Zhang C; Yan B
[Ad] Endereço:China National Digital Switching System Engineering and Technological Research Center, Zhengzhou, China.
[Ti] Título:Method for enhancing single-trial P300 detection by introducing the complexity degree of image information in rapid serial visual presentation tasks.
[So] Source:PLoS One;12(12):e0184713, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The application of electroencephalogram (EEG) generated by human viewing images is a new thrust in image retrieval technology. A P300 component in the EEG is induced when the subjects see their point of interest in a target image under the rapid serial visual presentation (RSVP) experimental paradigm. We detected the single-trial P300 component to determine whether a subject was interested in an image. In practice, the latency and amplitude of the P300 component may vary in relation to different experimental parameters, such as target probability and stimulus semantics. Thus, we proposed a novel method, Target Recognition using Image Complexity Priori (TRICP) algorithm, in which the image information is introduced in the calculation of the interest score in the RSVP paradigm. The method combines information from the image and EEG to enhance the accuracy of single-trial P300 detection on the basis of traditional single-trial P300 detection algorithm. We defined an image complexity parameter based on the features of the different layers of a convolution neural network (CNN). We used the TRICP algorithm to compute for the complexity of an image to quantify the effect of different complexity images on the P300 components and training specialty classifier according to the image complexity. We compared TRICP with the HDCA algorithm. Results show that TRICP is significantly higher than the HDCA algorithm (Wilcoxon Sign Rank Test, p<0.05). Thus, the proposed method can be used in other and visual task-related single-trial event-related potential detection.
[Mh] Termos MeSH primário: Potencial Evocado P300
Análise e Desempenho de Tarefas
Visão Ocular
[Mh] Termos MeSH secundário: Adulto
Algoritmos
Eletroencefalografia
Feminino
Seres Humanos
Masculino
Estimulação Luminosa
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180129
[Lr] Data última revisão:
180129
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171229
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0184713


  3 / 3012 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
[PMID]:29283237
[Au] Autor:Gnezditskiy VV; Korepina OS; Chatskaya AV; Klochkova OI
[Ti] Título:Memory, Cognition and the Endogenous Evoked Potentials of the Brain: the Estimation of the Disturbance of Cognitive Functions and Capacity of Working Memory Without the Psychological Testing.
[So] Source:Usp Fiziol Nauk;48(1):3-23, 2017 Jan-Mar.
[Is] ISSN:0301-1798
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:Cognition, cognitive and memory impairments is widely discussed in the literature, especially in the psycho physiological and the neurologic. In essence, this literature is dedicated to the psycho physiological tests, different scales. However, instrument neurophysiologic methods not so widely are used for these purposes. This review is dedicated to the instrument methods of neurophysiology, in particular to the endogenous evoked potentials method Р 300 (by characteristic latency 300 ms), in the estimation of cognitive functions and memory, to their special features dependent on age and to special features to their changes with the pathology. Method cognitive EP - Р 300 is the response of the brain, recorded under the conditions of the identification of the significant distinguishing stimulus, it facilitates the inspection of cognitive functions and memory in the healthy persons and patients with different manifestation of cognitive impairments. In the review it is shown on the basis of literature and our own data, that working (operative) memory and the capacity of the working memory it can be evaluated with the aid of the indices Р 300 within the normal subject and with the pathology. Testing with the estimation of working memory according to latent period of the peak Р 300 can be carried out and when conducting psychological testing is not possible for any reasons. Together with these cognitive EP are used for evidence pharmacotherapy of many neurotropic drugs.
[Mh] Termos MeSH primário: Encéfalo/diagnóstico por imagem
Cognição/fisiologia
Disfunção Cognitiva/diagnóstico por imagem
Potencial Evocado P300/fisiologia
Potenciais Evocados Auditivos/fisiologia
Memória de Curto Prazo/fisiologia
[Mh] Termos MeSH secundário: Estimulação Acústica
Adulto
Fatores Etários
Idoso
Encéfalo/patologia
Encéfalo/fisiopatologia
Disfunção Cognitiva/patologia
Disfunção Cognitiva/fisiopatologia
Feminino
Seres Humanos
Imagem por Ressonância Magnética
Masculino
Meia-Idade
Testes Psicológicos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180116
[Lr] Data última revisão:
180116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171229
[St] Status:MEDLINE


  4 / 3012 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29273080
[Au] Autor:Yaguchi C; Fujiwara K; Kiyota N
[Ad] Endereço:Department of Rehabilitation, Japan Health Care College, 6-17-3 Megumino-nishi, Eniwa, 061-1373, Japan. c_yaguchi@nihoniryo-c.ac.jp.
[Ti] Título:Activation timing of postural muscles of lower legs and prediction of postural disturbance during bilateral arm flexion in older adults.
[So] Source:J Physiol Anthropol;36(1):44, 2017 Dec 22.
[Is] ISSN:1880-6805
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Activation timings of postural muscles of lower legs and prediction of postural disturbance were investigated in young and older adults during bilateral arm flexion in a self-timing task and an oddball task with different probabilities of target presentation. Arm flexion was started from a standing posture with hands suspended 10 cm below the horizontal level in front of the body, in which postural control focused on the ankles is important. METHODS: Fourteen young and 14 older adults raised the arms in response to the target sound signal. Three task conditions were used: 15 and 45% probabilities of the target in the oddball task and self-timing. Analysis items were activation timing of postural muscles (erector spinae, biceps femoris, and gastrocnemius) with respect to the anterior deltoid (AD), and latency and amplitude of the P300 component of event-related brain potential. RESULTS: For young adults, all postural muscles were activated significantly earlier than AD under each condition, and time of preceding gastrocnemius activation was significantly longer in the order of the self-timing, 45 and 15% conditions. P300 latency was significantly shorter, and P300 amplitude was significantly smaller under the 45% condition than under the 15% condition. For older adults, although all postural muscles, including gastrocnemius, were activated significantly earlier than AD in the self-timing condition, only activation timing of gastrocnemius was not significantly earlier than that of AD in oddball tasks, regardless of target probability. No significant differences were found between 15 and 45% conditions in onset times of all postural muscles, and latency and amplitude of P300. CONCLUSION: These results suggest that during arm movement, young adults can achieve sufficient postural preparation in proportion to the probability of target presentation in the oddball task. Older adults can achieve postural control using ankle joints in the self-timing task. However, in the oddball task, older adults experience difficulty predicting the timing of target presentation, which could be related to deteriorated cognitive function, resulting in reduced use of the ankle joints for postural control.
[Mh] Termos MeSH primário: Potencial Evocado P300/fisiologia
Extremidade Inferior/fisiologia
Músculo Esquelético/fisiologia
Equilíbrio Postural/fisiologia
[Mh] Termos MeSH secundário: Adulto
Idoso
Envelhecimento/fisiologia
Articulação do Tornozelo/fisiologia
Braço/fisiologia
Feminino
Seres Humanos
Masculino
Análise e Desempenho de Tarefas
Fatores de Tempo
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180104
[Lr] Data última revisão:
180104
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171224
[St] Status:MEDLINE
[do] DOI:10.1186/s40101-017-0160-8


  5 / 3012 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28461101
[Au] Autor:Tsolaki AC; Kosmidou V; Kompatsiaris IY; Papadaniil C; Hadjileontiadis L; Adam A; Tsolaki M
[Ad] Endereço:Medical Physics Laboratory, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece. Electronic address: tsolakianthoula@gmail.com.
[Ti] Título:Brain source localization of MMN and P300 ERPs in mild cognitive impairment and Alzheimer's disease: a high-density EEG approach.
[So] Source:Neurobiol Aging;55:190-201, 2017 Jul.
[Is] ISSN:1558-1497
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Alzheimer's disease is the most common neurodegenerative disease of Western societies, suggesting the need for early diagnosis, even in preclinical stages. In this vein, the localization of neuronal generators of event-related potential (ERP) components, that is, the mismatch negativity and the P300, based on high-density electroencephalogram data, was explored as a means to enhance their sensitivity as markers of preclinical Alzheimer's disease (AD). A 2-tone oddball experiment was conducted, involving 21 healthy elderly, 21 mild cognitive impairment, and 21 mild AD patients, while high-density electroencephalogram data were recorded. The results revealed longer latencies of both mismatch negativity and P300 and slower and far less accurate responses as neurodegeneration progressed. Standardized low-resolution electromagnetic tomography revealed that source differences between healthy and mild cognitive impairment and healthy and AD patients for both ERP components were present in the same Brodmann area independently of the ERP and the stage of cognitive decline. This finding indicates an early change of source activation related to cognitive performance and may be used to improve the diagnostic and prognostic value of ERPs.
[Mh] Termos MeSH primário: Doença de Alzheimer/diagnóstico
Doença de Alzheimer/fisiopatologia
Cognição/fisiologia
Disfunção Cognitiva/diagnóstico
Disfunção Cognitiva/fisiopatologia
Eletroencefalografia/métodos
Potencial Evocado P300/fisiologia
[Mh] Termos MeSH secundário: Idoso
Doença de Alzheimer/psicologia
Disfunção Cognitiva/psicologia
Feminino
Seres Humanos
Masculino
Meia-Idade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE


  6 / 3012 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27776572
[Au] Autor:Rydkjær J; Møllegaard Jepsen JR; Pagsberg AK; Fagerlund B; Glenthøj BY; Oranje B
[Ad] Endereço:Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research (CINS) and Center for Neuropsychiatric Schizophrenia Research (CNSR),Mental Health Centre Glostrup,University of Copenhagen,Denmark.
[Ti] Título:Mismatch negativity and P3a amplitude in young adolescents with first-episode psychosis: a comparison with ADHD.
[So] Source:Psychol Med;47(2):377-388, 2017 Jan.
[Is] ISSN:1469-8978
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Deficient mismatch negativity (MMN) has been proposed as a candidate biomarker in schizophrenia and may therefore be potentially useful in early identification and intervention in early onset psychosis. In this study we explored whether deficits in the automatic orienting and reorienting responses, measured as MMN and P3a amplitude, are present in young adolescents with first-episode psychosis (FEP) and whether findings are specific to psychosis compared to young adolescents with attention deficit hyperactivity disorder (ADHD). METHOD: MMN and P3a amplitude were assessed in young adolescents (age 12-17 years) with either FEP (N = 27) or ADHD (N = 28) and age- and gender-matched healthy controls (N = 43). The MMN paradigm consisted of a four-tone auditory oddball task with deviant stimuli based on frequency, duration and their combination. RESULTS: Significantly less MMN was found in patients with psychosis compared to healthy controls in response to frequency and duration deviants. MMN amplitudes in the group of patients with ADHD were not significantly different from patients with psychosis or healthy controls. No significant group differences were found on P3a amplitude. CONCLUSION: Young adolescents with FEP showed impaired MMN compared to healthy controls while intermediate and overlapping levels of MMN were observed in adolescents with ADHD. The findings suggest that young FEP patients already exhibit pre-attentive deficits that are characteristic of schizophrenia albeit expressed on a continuum shared with other neuropsychiatric disorders.
[Mh] Termos MeSH primário: Transtorno do Deficit de Atenção com Hiperatividade/fisiopatologia
Percepção Auditiva/fisiologia
Potencial Evocado P300/fisiologia
Potenciais Evocados Auditivos/fisiologia
Transtornos Psicóticos/fisiopatologia
[Mh] Termos MeSH secundário: Adolescente
Criança
Eletroencefalografia
Feminino
Seres Humanos
Masculino
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161026
[St] Status:MEDLINE
[do] DOI:10.1017/S0033291716002518


  7 / 3012 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28877175
[Au] Autor:Pinegger A; Hiebel H; Wriessnegger SC; Müller-Putz GR
[Ad] Endereço:Institute of Neural Engineering, Graz University of Technology, Graz, Austria.
[Ti] Título:Composing only by thought: Novel application of the P300 brain-computer interface.
[So] Source:PLoS One;12(9):e0181584, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The P300 event-related potential is a well-known pattern in the electroencephalogram (EEG). This kind of brain signal is used for many different brain-computer interface (BCI) applications, e.g., spellers, environmental controllers, web browsers, or for painting. In recent times, BCI systems are mature enough to leave the laboratories to be used by the end-users, namely severely disabled people. Therefore, new challenges arise and the systems should be implemented and evaluated according to user-centered design (USD) guidelines. We developed and implemented a new system that utilizes the P300 pattern to compose music. Our Brain Composing system consists of three parts: the EEG acquisition device, the P300-based BCI, and the music composing software. Seventeen musical participants and one professional composer performed a copy-spelling, a copy-composing, and a free-composing task with the system. According to the USD guidelines, we investigated the efficiency, the effectiveness and subjective criteria in terms of satisfaction, enjoyment, frustration, and attractiveness. The musical participants group achieved high average accuracies: 88.24% (copy-spelling), 88.58% (copy-composing), and 76.51% (free-composing). The professional composer achieved also high accuracies: 100% (copy-spelling), 93.62% (copy-composing), and 98.20% (free-composing). General results regarding the subjective criteria evaluation were that the participants enjoyed the usage of the Brain Composing system and were highly satisfied with the system. Showing very positive results with healthy people in this study, this was the first step towards a music composing system for severely disabled people.
[Mh] Termos MeSH primário: Interfaces Cérebro-Computador
Potencial Evocado P300/fisiologia
Pensamento
[Mh] Termos MeSH secundário: Adulto
Comportamento
Feminino
Seres Humanos
Masculino
Inquéritos e Questionários
Análise e Desempenho de Tarefas
Escala Visual Analógica
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170907
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0181584


  8 / 3012 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28863361
[Au] Autor:Ryan DB; Townsend G; Gates NA; Colwell K; Sellers EW
[Ad] Endereço:Department of Psychology, East Tennessee State University, Johnson City, TN, USA. Electronic address: Ryand1@goldmail.etsu.edu.
[Ti] Título:Evaluating brain-computer interface performance using color in the P300 checkerboard speller.
[So] Source:Clin Neurophysiol;128(10):2050-2057, 2017 Oct.
[Is] ISSN:1872-8952
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: Current Brain-Computer Interface (BCI) systems typically flash an array of items from grey to white (GW). The objective of this study was to evaluate BCI performance using uniquely colored stimuli. METHODS: In addition to the GW stimuli, the current study tested two types of color stimuli (grey to color [GC] and color intensification [CI]). The main hypotheses were that in a checkboard paradigm, unique color stimuli will: (1) increase BCI performance over the standard GW paradigm; (2) elicit larger event-related potentials (ERPs); and, (3) improve offline performance with an electrode selection algorithm (i.e., Jumpwise). RESULTS: Online results (n=36) showed that GC provides higher accuracy and information transfer rate than the CI and GW conditions. Waveform analysis showed that GC produced higher amplitude ERPs than CI and GW. Information transfer rate was improved by the Jumpwise-selected channel locations in all conditions. CONCLUSIONS: Unique color stimuli (GC) improved BCI performance and enhanced ERPs. Jumpwise-selected electrode locations improved offline performance. SIGNIFICANCE: These results show that in a checkerboard paradigm, unique color stimuli increase BCI performance, are preferred by participants, and are important to the design of end-user applications; thus, could lead to an increase in end-user performance and acceptance of BCI technology.
[Mh] Termos MeSH primário: Interfaces Cérebro-Computador/normas
Percepção de Cores/fisiologia
Potencial Evocado P300/fisiologia
Reconhecimento Visual de Modelos/fisiologia
Estimulação Luminosa/métodos
[Mh] Termos MeSH secundário: Adulto
Eletroencefalografia/métodos
Eletroencefalografia/normas
Feminino
Seres Humanos
Masculino
Meia-Idade
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171028
[Lr] Data última revisão:
171028
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170902
[St] Status:MEDLINE


  9 / 3012 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28678888
[Au] Autor:Ma Q; Qian D; Hu L; Wang L
[Ad] Endereço:School of Management, Zhejiang University, Hangzhou, China.
[Ti] Título:Hello handsome! Male's facial attractiveness gives rise to female's fairness bias in Ultimatum Game scenarios-An ERP study.
[So] Source:PLoS One;12(7):e0180459, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The current study delineated how male proposers' facial attractiveness affect female responders' fairness considerations and their subsequent decision outcome during the Ultimatum Game (UG). Event Related Potentials (ERPs) were recorded from 17 female subjects, who played the role as responders and had to decide whether to accept offers from either attractive or unattractive male proposers. Behavioral data (Acceptance Ratio and Response time) revealed that, more offers were accepted from attractive-face conditions; subjects typically responded quicker to unfair offers from unattractive proposers as compared with slower to unfair offers from attractive proposers. The ERP data demonstrated similar N2 amplitudes elicited by both attractive and unattractive faces, and a larger early frontal LPP elicited by the attractive faces compared with unattractive ones, but no significant differences of both late posterior LPP and typical parietal LPP amplitudes were observed between these two face conditions, which was different from our previous study with similar paradigm but male participants. The results suggest that, in comparison to males, females might not experience the potential attention bias towards unattractive opposite-sex faces and are less likely to possess an enhanced processing and evaluation of those faces. This phenomenon might be explained by endogenous gender differences in mate preference. The feedback-related negativity (FRN) and P300 responses during an offer presentation were further measured in both attractive-face and unattractive-face conditions and the results demonstrated that the amplitudes elicited by fair and unfair offers were not statistically different in the former condition, but were different in the latter condition. More specifically, unfair offers generated larger FRN and smaller P300 than fair ones in the unattractive-face condition. Findings suggest that, although females tend to possess less salient evaluation of male's facial attractiveness, the attractiveness of male proposers would still attenuate female responders' fairness consideration during the UG.
[Mh] Termos MeSH primário: Beleza
Potencial Evocado P300
Face
[Mh] Termos MeSH secundário: Adulto
Eletroencefalografia
Feminino
Seres Humanos
Masculino
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171002
[Lr] Data última revisão:
171002
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170706
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0180459


  10 / 3012 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28413707
[Au] Autor:Karton I; Bachmann T
[Ad] Endereço:Institute of PsychologyUniversity of TartuTartuEstonia.
[Ti] Título:Disrupting dorsolateral prefrontal cortex by rTMS reduces the P300 based marker of deception.
[So] Source:Brain Behav;7(4):e00656, 2017 Apr.
[Is] ISSN:2162-3279
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: Quite many studies have revealed certain brain-process signatures indicative of subject's deceptive behavior. These signatures are neural correlates of deception. However, much less is known about whether these signatures can be modified by noninvasive brain stimulation techniques representing methods of causal intervention of brain processes and the corresponding behavior. Our purpose was to explore whether such methods have an effect on these signatures. METHODS: It is well known that electroencephalographic event-related potential component, P300, is sensitive to perception of critical items in a concealed information test, one of the central methods in deception studies. We examined whether the relative level of expression of P300 as a neural marker of deception can be manipulated by means of noninvasive neuromodulation. We used EEG/ERP recording combined with (i) neuronavigated repetitive transcranial magnetic stimulation (rTMS) and (ii) concealed information detection test. An opportunistically recruited volunteer group of normal adults formed our experimental group. RESULTS: We show that offline rTMS to dorsolateral prefrontal cortex attenuated relative P300 amplitude in response to the critical items compared to the neutral items. CONCLUSION: Noninvasive prefrontal cortex excitability disruption by rTMS can be used to manipulate the sensitivity of ERP signatures of deception to critical items in a concealment-based variant of lie detection test.
[Mh] Termos MeSH primário: Decepção
Potencial Evocado P300/fisiologia
Córtex Pré-Frontal/fisiologia
Estimulação Magnética Transcraniana/métodos
[Mh] Termos MeSH secundário: Adulto
Análise de Variância
Eletroencefalografia
Feminino
Seres Humanos
Masculino
Testes Neuropsicológicos
Distribuição Aleatória
Processamento de Sinais Assistido por Computador
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170424
[Lr] Data última revisão:
170424
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170418
[St] Status:MEDLINE
[do] DOI:10.1002/brb3.656



página 1 de 302 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde