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Pesquisa : E05.796.817.559 [Categoria DeCS]
Referências encontradas : 302 [refinar]
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[PMID]:27896708
[Au] Autor:Baurès R; DeLucia PR; Olson M; Oberfeld D
[Ad] Endereço:CerCo, Université de Toulouse, CNRS, UPS, Toulouse, France. robin.baures@cnrs.fr.
[Ti] Título:Asymmetric interference in concurrent time-to-contact estimation: Cousin or twin of the psychological refractory period effect?
[So] Source:Atten Percept Psychophys;79(2):698-711, 2017 Feb.
[Is] ISSN:1943-393X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In a reaction time (RT) task requiring fast responses to two stimuli presented close in time, human observers show a delayed RT to the second stimulus. This phenomenon has been attributed to a psychological refractory period (PRP). A similar asymmetric interference is found when performing multiple concurrent visual time-to-contact (TTC) estimations for moving objects, despite important differences between the tasks. In the present study, we studied the properties of the asymmetric interference found in the TTC task and compared them to the classical PRP effect. In Experiment 1, we varied the time interval between the two objects' arrival times to determine the dependence of the PRP-like effect on the asynchrony between the two TTCs. In Experiment 2, we investigated whether the physical or the perceived arrival order determined the asymmetric interference. Our results confirmed the existence of asymmetric interference in the multiple TTC estimation task, but also indicated important differences from the traditional PRP effect observed in the RT paradigm. The origins of these differences are discussed, as well as the practical implications.
[Mh] Termos MeSH primário: Estimulação Luminosa/métodos
Desempenho Psicomotor/fisiologia
Tempo de Reação/fisiologia
Período Refratário Psicológico/fisiologia
Percepção do Tempo/fisiologia
[Mh] Termos MeSH secundário: Adulto
Feminino
Seres Humanos
Masculino
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171003
[Lr] Data última revisão:
171003
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161130
[St] Status:MEDLINE
[do] DOI:10.3758/s13414-016-1244-y


  2 / 302 MEDLINE  
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[PMID]:27825020
[Au] Autor:Bryce D; Bratzke D
[Ad] Endereço:Department of Psychology, University of Tübingen, Schleichstrasse 4, 72076 Tübingen, Germany. Electronic address: donna.bryce@uni-tuebingen.de.
[Ti] Título:Are participants' reports of their own reaction times reliable? Re-examining introspective limitations in active and passive dual-task paradigms.
[So] Source:Acta Psychol (Amst);172:1-9, 2017 Jan.
[Is] ISSN:1873-6297
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:There is a known introspective limitation in the Psychological Refractory Period (PRP) paradigm - people underestimate the dual-task costs on their second reaction time. The prevailing explanation for this is that conscious awareness of the second stimulus is delayed in time until the first task has been centrally processed. Here, we examined this effect in more detail, by comparing reaction time estimates after processing a PRP task, and after passively experiencing 'replays' of PRP trials. Even when participants had no dual-task processing demands, they did not accurately report the reaction time intervals using a visual analogue scale (the original reporting method of most introspective PRP experiments), but they did when placing markers that represent each event on a timeline. Thus, the timeline seems to better represent participants' introspective representation of the trial. Importantly, introspection limitations still existed when participants processed the PRP task and then recreated it on a timeline.
[Mh] Termos MeSH primário: Conscientização/fisiologia
Desempenho Psicomotor/fisiologia
Período Refratário Psicológico/fisiologia
Autorrelato/normas
[Mh] Termos MeSH secundário: Adolescente
Adulto
Feminino
Seres Humanos
Masculino
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170117
[Lr] Data última revisão:
170117
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161109
[St] Status:MEDLINE


  3 / 302 MEDLINE  
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[PMID]:27352900
[Au] Autor:Magen H
[Ad] Endereço:School of Occupational Therapy, Faculty of Medicine of Hadassah and the Hebrew University, Jerusalem, Israel. msmagen@mail.huji.ac.il.
[Ti] Título:The role of central attention in retrieval from visual short-term memory.
[So] Source:Psychon Bull Rev;24(2):423-430, 2017 Apr.
[Is] ISSN:1531-5320
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The role of central attention in visual short-term memory (VSTM) encoding and maintenance is well established, yet its role in retrieval has been largely unexplored. This study examined the involvement of central attention in retrieval from VSTM using a dual-task paradigm. Participants performed a color change-detection task. Set size varied between 1 and 3 items, and the memory sample was maintained for either a short or a long delay period. A secondary tone discrimination task was introduced at the end of the delay period, shortly before the appearance of a central probe, and occupied central attention while participants were searching within VSTM representations. Similarly to numerous previous studies, reaction time increased as a function of set size reflecting the occurrence of a capacity-limited memory search. When the color targets were maintained over a short delay, memory was searched for the most part without the involvement of central attention. However, with a longer delay period, the search relied entirely on the operation of central attention. Taken together, this study demonstrates that central attention is involved in retrieval from VSTM, but the extent of its involvement depends on the duration of the delay period. Future studies will determine whether the type of memory search (parallel or serial) carried out during retrieval depends on the nature of the attentional mechanism involved the task.
[Mh] Termos MeSH primário: Percepção de Cores
Discriminação (Psicologia)
Memória de Curto Prazo
Rememoração Mental
Reconhecimento Visual de Modelos
[Mh] Termos MeSH secundário: Adulto
Atenção
Percepção Auditiva
Feminino
Seres Humanos
Masculino
Consolidação da Memória
Tempo de Reação
Período Refratário Psicológico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1705
[Cu] Atualização por classe:171112
[Lr] Data última revisão:
171112
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160630
[St] Status:MEDLINE
[do] DOI:10.3758/s13423-016-1111-9


  4 / 302 MEDLINE  
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[PMID]:27311578
[Au] Autor:Bratzke D; Bryce D
[Ad] Endereço:Fachbereich Psychologie, Universität Tübingen, Schleichstrasse 4, 72076, Tübingen, Germany. daniel.bratzke@uni-tuebingen.de.
[Ti] Título:Temporal discrimination of one's own reaction times in dual-task performance: Context effects and methodological constraints.
[So] Source:Atten Percept Psychophys;78(6):1806-16, 2016 Aug.
[Is] ISSN:1943-393X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In this study we used the method of constant stimuli to investigate introspective reaction times in the psychological refractory period (PRP) paradigm under different temporal contexts. Previous introspective PRP studies have mostly used visual analogue scales to assess introspective reaction times and found that participants were largely unaware of the typical dual-task costs that arise in this paradigm (PRP effect). This apparent limitation of introspection has been taken as evidence for a serial processing bottleneck that encompasses response selection as well as conscious perception. In our study, in each trial participants first performed the PRP task and were then presented with a comparison interval that they had to compare with their reaction time to the second task (RT2). Across three experiments, we observed that the subjective estimates of RT2 (i.e., the points of subjective equality) did not reflect the objective pattern but were almost completely biased toward the center of the comparison intervals (asymmetry effect). In a control experiment in which participants discriminated RT2s of other participants without performing the PRP task, this bias was largely reduced. We interpret these results as indicating that in dual-task performance participants acquire only poor temporal representations of their own reaction times, and the apparent unawareness of the PRP effect may reflect disturbed timing abilities rather than a conscious perception bottleneck.
[Mh] Termos MeSH primário: Percepção
Desempenho Psicomotor/fisiologia
Período Refratário Psicológico/fisiologia
Análise e Desempenho de Tarefas
[Mh] Termos MeSH secundário: Adulto
Feminino
Seres Humanos
Masculino
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160618
[St] Status:MEDLINE
[do] DOI:10.3758/s13414-016-1161-0


  5 / 302 MEDLINE  
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[PMID]:27155317
[Au] Autor:Reissland J; Manzey D
[Ad] Endereço:Technische Universitaet Berlin, Work, Engineering and Organizational Psychology, Marchstrasse 12, F7, 10587Berlin, Germany. Electronic address: jessika.reissland@tu-berlin.de.
[Ti] Título:Serial or overlapping processing in multitasking as individual preference: Effects of stimulus preview on task switching and concurrent dual-task performance.
[So] Source:Acta Psychol (Amst);168:27-40, 2016 Jul.
[Is] ISSN:1873-6297
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Understanding the mechanisms and performance consequences of multitasking has long been in focus of scientific interest, but has been investigated by three research lines more or less isolated from each other. Studies in the fields of the psychological refractory period, task switching, and interruptions have scored with a high experimental control, but usually do not give participants many degrees of freedom to self-organize the processing of two concurrent tasks. Individual strategies as well as their impact on efficiency have mainly been neglected. Self-organized multitasking has been investigated in the field of human factors, but primarily with respect to overall performance without detailed investigation of how the tasks are processed. The current work attempts to link aspects of these research lines. All of them, explicitly or implicitly, provide hints about an individually preferred type of task organization, either more cautious trying to work strictly serially on only one task at a time or more daring with a focus on task interleaving and, if possible, also partially overlapping (parallel) processing. In two experiments we investigated different strategies of task organization and their impact on efficiency using a new measure of overall multitasking efficiency. Experiment 1 was based on a classical task switching paradigm with two classification tasks, but provided one group of participants with a stimulus preview of the task to switch to next, enabling at least partial overlapping processing. Indeed, this preview led to a reduction of switch costs and to an increase of dual-task efficiency, but only for a subgroup of participants. They obviously exploited the possibility of overlapping processing, while the others worked mainly serially. While task-sequence was externally guided in the first experiment, Experiment 2 extended the approach by giving the participants full freedom of task organization in concurrent performance of the same tasks. Fine-grained analyses of response scheduling again revealed individual differences regarding the preference for strictly serial processing vs. some sort of task interleaving and overlapping processing. However, neither group showed a striking benefit in dual-task efficiency, although the results show that the costs of multitasking can partly be compensated by overlapping processing.
[Mh] Termos MeSH primário: Atenção/fisiologia
Período Refratário Psicológico/fisiologia
Análise e Desempenho de Tarefas
[Mh] Termos MeSH secundário: Adolescente
Adulto
Feminino
Seres Humanos
Masculino
Testes Neuropsicológicos
Estimulação Luminosa
Percepção Visual/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160508
[St] Status:MEDLINE


  6 / 302 MEDLINE  
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[PMID]:27146993
[Au] Autor:Hartley AA; Maquestiaux F; Festini SB; Frazier K; Krimmer PJ
[Ad] Endereço:Department of Psychology, Scripps College, Claremont, CA, 91711, USA. ahartley@scrippscollege.edu.
[Ti] Título:Backward compatibility effects in younger and older adults.
[So] Source:Atten Percept Psychophys;78(5):1337-50, 2016 Jul.
[Is] ISSN:1943-393X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In many dual-task situations, responses to the second of two tasks are slowed when the time between tasks is short. The response-selection bottleneck model of dual-task performance accounts for this phenomenon by assuming that central processing of the second task is blocked by a bottleneck until central processing of Task 1 is complete. This assumption could be called into question if it could be demonstrated that the response to Task 2 affected the central processing of Task 1, a backward response compatibility effect. Such effects are well-established in younger adults. Backward compatibility effects in older (as well as younger) adults were explored in two experiments. The first experiment found clear backward response compatibility effects for younger adults but no evidence of them for older adults. The second experiment explored backward stimulus compatibility and found similar effects in both younger and older adults. Evidence possibly consistent with some pre-bottleneck processing of Task 2 central stages also was found in the second experiment in both age groups. For younger adults, the results provide further evidence falsifying the claim of an immutable response selection bottleneck. For older adults, the evidence suggested that Task 2 affects Task 1 when there is stimulus compatibility but not when there is response compatibility.
[Mh] Termos MeSH primário: Fatores Etários
Desempenho Psicomotor
Período Refratário Psicológico
Análise e Desempenho de Tarefas
[Mh] Termos MeSH secundário: Adolescente
Idoso
Idoso de 80 Anos ou mais
Feminino
Seres Humanos
Masculino
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171107
[Lr] Data última revisão:
171107
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160506
[St] Status:MEDLINE
[do] DOI:10.3758/s13414-016-1113-8


  7 / 302 MEDLINE  
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[PMID]:27083589
[Au] Autor:Soutschek A; Taylor PC; Schubert T
[Ad] Endereço:Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany. alexander.soutschek@econ.uzh.ch.
[Ti] Título:The role of the dorsal medial frontal cortex in central processing limitation: a transcranial magnetic stimulation study.
[So] Source:Exp Brain Res;234(9):2447-55, 2016 Sep.
[Is] ISSN:1432-1106
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:When humans perform two tasks simultaneously, responses to the second task are increasingly delayed as the interval between the two tasks decreases (psychological refractory period). This delay of the second task is thought to reflect a central processing limitation at the response selection stage. However, the neural mechanisms underlying this central processing limitation remain unclear. Using transcranial magnetic stimulation (TMS), we examined the role of the dorsal medial frontal cortex (dMFC) in a dual-task paradigm in which participants performed an auditory task 1 and a visual task 2. We found that dMFC TMS, relative to control conditions, reduced the psychological refractory period for task 2 processing, whereas we observed no dMFC TMS effects on task 1 processing. This suggests a causal role of the dMFC in coordinating response selection processes at the central bottleneck.
[Mh] Termos MeSH primário: Atenção/fisiologia
Mapeamento Encefálico
Lobo Frontal/fisiologia
Desempenho Psicomotor/fisiologia
Período Refratário Psicológico/fisiologia
Estimulação Magnética Transcraniana
[Mh] Termos MeSH secundário: Adolescente
Adulto
Feminino
Seres Humanos
Processamento de Imagem Assistida por Computador/métodos
Estimulação Luminosa/métodos
Estimulação Magnética Transcraniana/métodos
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171010
[Lr] Data última revisão:
171010
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160417
[St] Status:MEDLINE
[do] DOI:10.1007/s00221-016-4649-x


  8 / 302 MEDLINE  
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[PMID]:26878090
[Au] Autor:Göthe K; Oberauer K; Kliegl R
[Ad] Endereço:University of Potsdam, Germany. Electronic address: Katrin.Goethe@uni-potsdam.de.
[Ti] Título:Eliminating dual-task costs by minimizing crosstalk between tasks: The role of modality and feature pairings.
[So] Source:Cognition;150:92-108, 2016 May.
[Is] ISSN:1873-7838
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:We tested the independent influences of two content-based factors on dual-task costs, and on the parallel processing ability: The pairing of S-R modalities and the pairing of relevant features between stimuli and responses of two tasks. The two pairing factors were realized across four dual-task groups. Within each group the two tasks comprised two different stimulus modalities (visual and auditory), two different relevant stimulus features (spatial and verbal) and two response modalities (manual and vocal). Pairings of S-R modalities (standard: visual-manual and auditory-vocal, non-standard: visual-vocal and auditory-manual) and feature pairings (standard: spatial-manual and verbal-vocal, non-standard: spatial-vocal and verbal-manual) varied across groups. All participants practiced their respective dual-task combination in a paradigm with simultaneous stimulus onset before being transferred to a psychological refractory period paradigm varying stimulus-onset asynchrony. A comparison at the end of practice revealed similar dual-task costs and similar pairing effects in both paradigms. Dual-task costs depended on modality and feature pairings. Groups training with non-standard feature pairings (i.e., verbal stimulus features mapped to spatially separated response keys, or spatial stimulus features mapped to verbal responses) and non-standard modality pairings (i.e., auditory stimulus mapped to manual response, or visual stimulus mapped to vocal responses) had higher dual-task costs than respective standard pairings. In contrast, irrespective of modality pairing dual-task costs virtually disappeared with standard feature pairings after practice in both paradigms. The results can be explained by crosstalk between feature-binding processes for the two tasks. Crosstalk was present for non-standard but absent for standard feature pairings. Therefore, standard feature pairings enabled parallel processing at the end of practice.
[Mh] Termos MeSH primário: Estimulação Acústica/métodos
Estimulação Luminosa/métodos
Desempenho Psicomotor/fisiologia
Tempo de Reação/fisiologia
Período Refratário Psicológico/fisiologia
Comportamento Verbal/fisiologia
[Mh] Termos MeSH secundário: Adulto
Atenção/fisiologia
Percepção Auditiva/fisiologia
Feminino
Seres Humanos
Masculino
Reconhecimento Visual de Modelos/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170120
[Lr] Data última revisão:
170120
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160216
[St] Status:MEDLINE


  9 / 302 MEDLINE  
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[PMID]:25919668
[Au] Autor:Maslovat D; Chua R; Carlsen AN; May C; Forgaard CJ; Franks IM
[Ad] Endereço:School of Kinesiology, University of British Columbia, Canada; Department of Kinesiology, Langara College, Canada. Electronic address: dmaslovat@langara.bc.ca.
[Ti] Título:A startling acoustic stimulus interferes with upcoming motor preparation: Evidence for a startle refractory period.
[So] Source:Acta Psychol (Amst);158:36-42, 2015 Jun.
[Is] ISSN:1873-6297
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:When a startling acoustic stimulus (SAS) is presented in a simple reaction time (RT) task, response latency is significantly shortened. The present study used a SAS in a psychological refractory period (PRP) paradigm to determine if a shortened RT1 latency would be propagated to RT2. Participants performed a simple RT task with an auditory stimulus (S1) requiring a vocal response (R1), followed by a visual stimulus (S2) requiring a key-lift response (R2). The two stimuli were separated by a variable stimulus onset asynchrony (SOA), and a typical PRP effect was found. When S1 was replaced with a 124dB SAS, R1 onset was decreased by 40-50ms; however, rather than the predicted propagation of a shortened RT, significantly longer responses were found for RT2 on startle trials at short SOAs. Furthermore, the 100ms SOA condition exhibited reduced peak EMG for R2 on startle trials, as compared to non-startle trials. These results are attributed to the startling stimulus temporarily interfering with cognitive processing, delaying and altering the execution of the second response. In addition to this "startle refractory period," results also indicated that RT1 latencies were significantly lengthened for trials that immediately followed a startle trial, providing evidence for longer-term effects of the startling stimulus.
[Mh] Termos MeSH primário: Estimulação Acústica
Movimento/fisiologia
Reflexo de Sobressalto/fisiologia
Período Refratário Psicológico/fisiologia
[Mh] Termos MeSH secundário: Adulto
Eletromiografia
Feminino
Seres Humanos
Masculino
Processos Mentais/fisiologia
Músculo Esquelético/inervação
Músculo Esquelético/fisiologia
Desempenho Psicomotor/fisiologia
Tempo de Reação/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1512
[Cu] Atualização por classe:150522
[Lr] Data última revisão:
150522
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150429
[St] Status:MEDLINE


  10 / 302 MEDLINE  
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[PMID]:25810162
[Au] Autor:Reimer CB; Strobach T; Frensch PA; Schubert T
[Ad] Endereço:Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany, christina.reimer@hu-berlin.de.
[Ti] Título:Are processing limitations of visual attention and response selection subject to the same bottleneck in dual-tasks?
[So] Source:Atten Percept Psychophys;77(4):1052-69, 2015 May.
[Is] ISSN:1943-393X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Visual attention and response selection are processes that are limited by capacity. The present study focuses on whether visual attention is subject to the response selection bottleneck. This was investigated by conducting 2 dual-task experiments of the psychological refractory period (PRP) type. A visual conjunction search task was chosen as Task 2 in these experiments. Conjunction search requires the binding of the stimulus' defining features. This binding is performed in a serial search process in displays of different amounts of stimuli until the presence or absence of the target is correctly indicated. In Experiment 1, the conjunction search was combined with a 2-choice tone discrimination Task 1, and in Experiment 2 with a 2-choice color discrimination Task 1. Detailed reaction time (RT) analyses revealed concurrent performance of visual search to both tone and color in Task 1's response selection. In conclusion, visual attention is not subject to the response selection bottleneck.
[Mh] Termos MeSH primário: Atenção/fisiologia
Percepção Visual/fisiologia
[Mh] Termos MeSH secundário: Adulto
Análise de Variância
Comportamento de Escolha/fisiologia
Discriminação (Psicologia)/fisiologia
Feminino
Seres Humanos
Masculino
Reconhecimento Visual de Modelos
Estimulação Luminosa
Nível de Discriminação Sonora/fisiologia
Desempenho Psicomotor/fisiologia
Período Refratário Psicológico/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1511
[Cu] Atualização por classe:150501
[Lr] Data última revisão:
150501
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150327
[St] Status:MEDLINE
[do] DOI:10.3758/s13414-015-0874-9



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