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Pesquisa : F01.145.875.596 [Categoria DeCS]
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[PMID]:28767687
[Au] Autor:Zhang H; Wu C; Chen Z; Liu Z; Zhu Y
[Ad] Endereço:School of Geographic and Biological Information, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu, China.
[Ti] Título:A novel on-line spatial-temporal k-anonymity method for location privacy protection from sequence rules-based inference attacks.
[So] Source:PLoS One;12(8):e0182232, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Analyzing large-scale spatial-temporal k-anonymity datasets recorded in location-based service (LBS) application servers can benefit some LBS applications. However, such analyses can allow adversaries to make inference attacks that cannot be handled by spatial-temporal k-anonymity methods or other methods for protecting sensitive knowledge. In response to this challenge, first we defined a destination location prediction attack model based on privacy-sensitive sequence rules mined from large scale anonymity datasets. Then we proposed a novel on-line spatial-temporal k-anonymity method that can resist such inference attacks. Our anti-attack technique generates new anonymity datasets with awareness of privacy-sensitive sequence rules. The new datasets extend the original sequence database of anonymity datasets to hide the privacy-sensitive rules progressively. The process includes two phases: off-line analysis and on-line application. In the off-line phase, sequence rules are mined from an original sequence database of anonymity datasets, and privacy-sensitive sequence rules are developed by correlating privacy-sensitive spatial regions with spatial grid cells among the sequence rules. In the on-line phase, new anonymity datasets are generated upon LBS requests by adopting specific generalization and avoidance principles to hide the privacy-sensitive sequence rules progressively from the extended sequence anonymity datasets database. We conducted extensive experiments to test the performance of the proposed method, and to explore the influence of the parameter K value. The results demonstrated that our proposed approach is faster and more effective for hiding privacy-sensitive sequence rules in terms of hiding sensitive rules ratios to eliminate inference attacks. Our method also had fewer side effects in terms of generating new sensitive rules ratios than the traditional spatial-temporal k-anonymity method, and had basically the same side effects in terms of non-sensitive rules variation ratios with the traditional spatial-temporal k-anonymity method. Furthermore, we also found the performance variation tendency from the parameter K value, which can help achieve the goal of hiding the maximum number of original sensitive rules while generating a minimum of new sensitive rules and affecting a minimum number of non-sensitive rules.
[Mh] Termos MeSH primário: Segurança Computacional
[Mh] Termos MeSH secundário: Algoritmos
Bases de Dados de Ácidos Nucleicos
Modelos Teóricos
Espaço Pessoal
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170829
[Lr] Data última revisão:
170829
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170803
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0182232


  2 / 868 MEDLINE  
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[PMID]:28219262
[Au] Autor:Hunley SB; Marker AM; Lourenco SF
[Ad] Endereço:1 Department of Psychology, Emory University, Atlanta, GA, USA.
[Ti] Título:Individual Differences in the Flexibility of Peripersonal Space.
[So] Source:Exp Psychol;64(1):49-55, 2017 Jan.
[Is] ISSN:2190-5142
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The current study investigated individual differences in the flexibility of peripersonal space (i.e., representational space near the body), specifically in relation to trait claustrophobic fear (i.e., fear of suffocating or being physically restricted). Participants completed a line bisection task with either a laser pointer (Laser condition), allowing for a baseline measure of the size of one's peripersonal space, or a stick (Stick condition), which produces expansion of one's peripersonal space. Our results revealed that individuals high in claustrophobic fear had larger peripersonal spaces than those lower in claustrophobic fear, replicating previous research. We also found that, whereas individuals low in claustrophobic fear demonstrated the expected expansion of peripersonal space in the Stick condition, individuals high in claustrophobic fear showed less expansion, suggesting decreased flexibility. We discuss these findings in relation to the defensive function of peripersonal space and reduced attentional flexibility associated with trait anxieties.
[Mh] Termos MeSH primário: Medo
Espaço Pessoal
Percepção Espacial/fisiologia
Percepção Visual/fisiologia
[Mh] Termos MeSH secundário: Adulto
Atenção/fisiologia
Feminino
Seres Humanos
Individualidade
Masculino
Estimulação Luminosa
Desempenho Psicomotor/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170404
[Lr] Data última revisão:
170404
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170222
[St] Status:MEDLINE
[do] DOI:10.1027/1618-3169/a000350


  3 / 868 MEDLINE  
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[PMID]:28154151
[Au] Autor:Bisio A; Garbarini F; Biggio M; Fossataro C; Ruggeri P; Bove M
[Ad] Endereço:Department of Experimental Medicine, Section of Human Physiology, University of Genoa, 16132 Genoa, Italy, and.
[Ti] Título:Dynamic Shaping of the Defensive Peripersonal Space through Predictive Motor Mechanisms: When the "Near" Becomes "Far".
[So] Source:J Neurosci;37(9):2415-2424, 2017 Mar 01.
[Is] ISSN:1529-2401
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The hand blink reflex is a subcortical defensive response, known to dramatically increase when the stimulated hand is statically positioned inside the defensive peripersonal space (DPPS) of the face. Here, we tested in a group of healthy human subjects the hand blink reflex in dynamic conditions, investigating whether the direction of the hand movements (up-to/down-from the face) could modulate it. We found that, on equal hand position, the response enhancement was present only when the hand approached to (and not receded from) the DPPS of the face. This means that, when the hand is close to the face but the subject is planning to move the hand down, the predictive motor system can anticipate the consequence of the movement: the "near" becomes "far." We found similar results both in passive movement condition, when only afferent (visual and proprioceptive) information can be used to estimate the final state of the system, and in motor imagery task, when only efferent (intentional) information is available to predict the consequences of the movement. All these findings provide evidence that the DPPS is dynamically shaped by predictive mechanisms run by the motor system and based on the integration of feedforward and sensory feedback signals. The defensive peripersonal space (DPPS) has a crucial role for survival, and its modulation is fundamental when we interact with the environment, as when we move our arms. Here, we focused on a defensive response, the hand blink reflex, known to increase when a static hand is stimulated inside the DPPS of the face. We tested the hand blink reflex in dynamic conditions (voluntary, passive, and imagined movements) and we found that, on equal hand position, the response enhancement was present only when the hand approached to (and not receded from) the DPPS of the face. This suggests that, through the integration of efferent and afferent signals, the safety boundary around the body is continuously shaped by the predictive motor system.
[Mh] Termos MeSH primário: Mecanismos de Defesa
Movimento/fisiologia
Espaço Pessoal
Percepção Espacial/fisiologia
[Mh] Termos MeSH secundário: Adulto
Análise de Variância
Piscadela/fisiologia
Estimulação Elétrica
Eletromiografia
Potencial Evocado Motor/fisiologia
Retroalimentação Sensorial
Feminino
Mãos
Seres Humanos
Imaginação
Masculino
Pele/inervação
Punho/inervação
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170818
[Lr] Data última revisão:
170818
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170204
[St] Status:MEDLINE
[do] DOI:10.1523/JNEUROSCI.0371-16.2016


  4 / 868 MEDLINE  
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[PMID]:27858126
[Au] Autor:Fini C; Bardi L; Epifanio A; Committeri G; Moors A; Brass M
[Ad] Endereço:Department of Experimental-Clinical and Health Psychology, Ghent University, Henri-Dunantlaan 2, 9000, Ghent, Belgium. Chiara.Fini@ugent.be.
[Ti] Título:Transcranial direct current stimulation (tDCS) of the inferior frontal cortex affects the "social scaling" of extrapersonal space depending on perspective-taking ability.
[So] Source:Exp Brain Res;235(3):673-679, 2017 Mar.
[Is] ISSN:1432-1106
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:When we have to judge the distance between another person and an object (social condition), we judge this distance as being smaller compared to judging the distance between two objects (nonsocial condition). It has been suggested that this compression is mediated by the attribution of a motor potential to the reference frame (other person vs. object). In order to explore the neural basis of this effect, we investigated whether the modulation of activity in the inferior frontal cortex (IFC) of the left hemisphere (recruited during visuospatial processes with a social component) changes the way we categorize space in a social compared with a nonsocial condition. We applied transcranial direct current stimulation to the left IFC, with different polarities (anodal, cathodal, and sham) while subjects performed an extrapersonal space categorization task. Interestingly, anodal stimulation of IFC induced an higher compression of space in the social compared to nonsocial condition. By contrast, cathodal stimulation induced the opposite effect. Furthermore, we found that this effect is modulated by interindividual differences in cognitive perspective taking. Our data support the idea that IFC is recruited during the social categorization of space.
[Mh] Termos MeSH primário: Percepção de Distância/fisiologia
Lobo Frontal/fisiologia
Relações Interpessoais
Espaço Pessoal
Percepção Social
Estimulação Transcraniana por Corrente Contínua
[Mh] Termos MeSH secundário: Adolescente
Adulto
Análise de Variância
Eletrodos
Feminino
Seres Humanos
Masculino
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161119
[St] Status:MEDLINE
[do] DOI:10.1007/s00221-016-4817-z


  5 / 868 MEDLINE  
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[PMID]:27739016
[Au] Autor:Stettler BA; Thomas LE
[Ad] Endereço:Center for Visual and Cognitive Neuroscience, Department of Psychology, North Dakota State University, Fargo, ND, USA. benjamin.stettler@ndsu.edu.
[Ti] Título:Visual processing is biased in peripersonal foot space.
[So] Source:Atten Percept Psychophys;79(1):298-305, 2017 Jan.
[Is] ISSN:1943-393X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Objects in peripersonal space are of great importance for interaction with the sensory world. A variety of research exploring sensory processing in peripersonal space has produced extensive evidence for altered vision near the hands. However, visual representations of the peripersonal space surrounding the feet remain unexplored. In a set of four experiments, we investigated whether observers experience biases in visual processing for objects near the feet that mirror the alterations associated with near-hand space. Participants performed attentional-cueing tasks in which they detected targets appearing (1) near or far from a single visible foot, (2) near one of two visible feet, (3) near or far from a nonfoot visual anchor, or (4) near or far from an occluded foot. We found a temporal cost associated with detecting targets appearing far from a visible foot, but no biases were associated with targets appearing near versus far from either a nonfoot visual anchor or an occluded foot. These results provide the first evidence suggesting that objects within stepping or kicking distance are processed differently from objects outside of peripersonal foot space.
[Mh] Termos MeSH primário:
Espaço Pessoal
Percepção Espacial/fisiologia
Percepção Visual/fisiologia
[Mh] Termos MeSH secundário: Adulto
Seres Humanos
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171109
[Lr] Data última revisão:
171109
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161015
[St] Status:MEDLINE
[do] DOI:10.3758/s13414-016-1225-1


  6 / 868 MEDLINE  
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[PMID]:27456354
[Au] Autor:Rushton C; Edvardsson D
[Ad] Endereço:School of Nursing and Midwifery, College of Science, Health and Engineering, La Trobe University, Melbourne, Vic., Australia.
[Ti] Título:Reconciling concepts of space and person-centred care of the older person with cognitive impairment in the acute care setting.
[So] Source:Nurs Philos;18(3), 2017 Jul.
[Is] ISSN:1466-769X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Although a large body of literature exists propounding the importance of space in aged care and care of the older person with dementia, there is, however, only limited exploration of the 'acute care space' as a particular type of space with archetypal constraints that maybe unfavourable to older people with cognitive impairment and nurses wanting to provide care that is person-centred. In this article, we explore concepts of space and examine the implications of these for the delivery of care to older people who are cognitively impaired. Our exploration is grounded in theorisations of space offered by key geographers and phenomenologists, but also draws on how space has been constructed within the nursing literature that refers specifically to acute care. We argue that space, once created, can be created and that nursing has a significant role to play in the process of its recreation in the pursuit of care that is person-centred. We conclude by introducing an alternative logic of space aimed at promoting the creation of more salutogenic spaces that invokes a sense of sanctuary, safeness, and inclusion, all of which are essential if the care provided to the older person with cognitive impairment is apposite to their needs. The concept of 'person-centred space' helps to crystallize the relationship between space and person-centred care and implies more intentional manipulation of space that is more conducive to caring and healing. Significantly, it marks a return to Nightingale's wisdom, that is, to put the person in the best possible conditions for nature to act upon them.
[Mh] Termos MeSH primário: Disfunção Cognitiva/complicações
Hospitalização
Assistência Centrada no Paciente/métodos
Espaço Pessoal
[Mh] Termos MeSH secundário: Idoso
Idoso de 80 Anos ou mais
Seres Humanos
Cuidados de Enfermagem/psicologia
Assistência Centrada no Paciente/ética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170815
[Lr] Data última revisão:
170815
[Sb] Subgrupo de revista:IM; N
[Da] Data de entrada para processamento:160727
[St] Status:MEDLINE
[do] DOI:10.1111/nup.12142


  7 / 868 MEDLINE  
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[PMID]:27711136
[Au] Autor:Roncone A; Hoffmann M; Pattacini U; Fadiga L; Metta G
[Ad] Endereço:iCub Facility, Istituto Italiano di Tecnologia, Genova, Italy.
[Ti] Título:Peripersonal Space and Margin of Safety around the Body: Learning Visuo-Tactile Associations in a Humanoid Robot with Artificial Skin.
[So] Source:PLoS One;11(10):e0163713, 2016.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This paper investigates a biologically motivated model of peripersonal space through its implementation on a humanoid robot. Guided by the present understanding of the neurophysiology of the fronto-parietal system, we developed a computational model inspired by the receptive fields of polymodal neurons identified, for example, in brain areas F4 and VIP. The experiments on the iCub humanoid robot show that the peripersonal space representation i) can be learned efficiently and in real-time via a simple interaction with the robot, ii) can lead to the generation of behaviors like avoidance and reaching, and iii) can contribute to the understanding the biological principle of motor equivalence. More specifically, with respect to i) the present model contributes to hypothesizing a learning mechanisms for peripersonal space. In relation to point ii) we show how a relatively simple controller can exploit the learned receptive fields to generate either avoidance or reaching of an incoming stimulus and for iii) we show how the robot can select arbitrary body parts as the controlled end-point of an avoidance or reaching movement.
[Mh] Termos MeSH primário: Espaço Pessoal
Robótica
Segurança
Pele Artificial
Percepção do Tato
Percepção Visual
[Mh] Termos MeSH secundário: Seres Humanos
Aprendizagem/fisiologia
Probabilidade
Percepção Espacial
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170622
[Lr] Data última revisão:
170622
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161007
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0163713


  8 / 868 MEDLINE  
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[PMID]:27510497
[Au] Autor:Perry A; Lwi SJ; Verstaen A; Dewar C; Levenson RW; Knight RT
[Ad] Endereço:University of California, Berkeley, CA, USA anat.perry@berkeley.edu.
[Ti] Título:The role of the orbitofrontal cortex in regulation of interpersonal space: evidence from frontal lesion and frontotemporal dementia patients.
[So] Source:Soc Cogn Affect Neurosci;11(12):1894-1901, 2016 Dec.
[Is] ISSN:1749-5024
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Interpersonal distance is central to communication and complex social behaviors but the neural correlates of interpersonal distance preferences are not defined. Previous studies suggest that damage to the orbitofrontal cortex (OFC) is associated with impaired interpersonal behavior. To examine whether the OFC is critical for maintaining appropriate interpersonal distance, we tested two groups of patients with OFC damage: Patients with OFC lesions and patients with behavioral variant frontotemporal dementia. These two groups were compared to healthy controls and to patients with lesions restricted to the dorsolateral prefrontal cortex. Only patients with OFC damage showed abnormal interpersonal distance preferences, which were significantly different from both controls and patients with dorsolateral prefrontal damage. The comfortable distances these patients chose with strangers were significantly closer than the other groups and resembled distances normally used with close others. These results shed light on the role of the OFC in regulating social behavior and may serve as a simple diagnostic tool for dementia or lesion patients.
[Mh] Termos MeSH primário: Demência Frontotemporal/fisiopatologia
Espaço Pessoal
Córtex Pré-Frontal/fisiopatologia
Comportamento Social
[Mh] Termos MeSH secundário: Adulto
Idoso
Feminino
Demência Frontotemporal/patologia
Seres Humanos
Masculino
Meia-Idade
Córtex Pré-Frontal/patologia
Normas Sociais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171103
[Lr] Data última revisão:
171103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160812
[St] Status:MEDLINE


  9 / 868 MEDLINE  
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[PMID]:27476269
[Au] Autor:Ariga A
[Ti] Título:[Expansive personal space: Distance between personal belongings reflects the interpersonal distance of their owners].
[So] Source:Shinrigaku Kenkyu;87(2):186-90, 2016 Jun.
[Is] ISSN:0021-5236
[Cp] País de publicação:Japan
[La] Idioma:jpn
[Ab] Resumo:People feel uncomfortable when someone else comes spatially near and thus encroaches on their personal space (PS). Although many social psychologists have explored characteristics of PS of/between/among individuals so far, there is currently no empirical research on whether the PS of individuals expands into space surrounding their belongings (or objects) that are away from their body. This study measured the spatial distance between bags which participants and confederates left behind, and thus demonstrated that the distance between bags was modulated in response to the interpersonal relationship of their owners. The present study suggests new evidence for expansive PS, which is the concept that an individual's PS expands into space surrounding his/her belongings.
[Mh] Termos MeSH primário: Relações Interpessoais
Espaço Pessoal
Territorialidade
[Mh] Termos MeSH secundário: Feminino
Seres Humanos
Masculino
Adulto Jovem
[Pt] Tipo de publicação:ENGLISH ABSTRACT; JOURNAL ARTICLE
[Em] Mês de entrada:1609
[Cu] Atualização por classe:160801
[Lr] Data última revisão:
160801
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160802
[St] Status:MEDLINE


  10 / 868 MEDLINE  
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[PMID]:27472851
[Au] Autor:Ahmadpour N; Kühne M; Robert JM; Vink P
[Ad] Endereço:Centre for Design Innovation, Faculty of Health, Arts and Design, Swinburne University of Technology, Melbourne, VIC, Australia.
[Ti] Título:Attitudes towards personal and shared space during the flight.
[So] Source:Work;54(4):981-7, 2016 Jul 25.
[Is] ISSN:1875-9270
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Aircraft passenger comfort experience was previously defined based on its underlying thematic components representing passengers' perception of the environmental elements and their link to their concerns. OBJECTIVE: This paper aims to 1) identify aircraft passengers' attitudes towards their personal and shared space in the cabin environment during the flight which are linked to their comfort experience and 2) highlight passenger concerns associated with those attitudes. METHOD: A sample involving 16 participants was conducted, collecting full accounts of their real-time flight experiences onboard commercial aircrafts, using questionnaires. RESULTS: Four types of attitudes were identified in reaction to participants' personal and shared space during the flight. Those were described as adjust, avoid, approach, and shield. Passengers' concerns associated with those attitudes were respectively: control, privacy, connectedness and tolerance. CONCLUSIONS: It is concluded that passenger comfort can be improved once the identified concerns and attitudes are addressed in the design of the aircraft seat and interior. Design recommendations are provided accordingly.
[Mh] Termos MeSH primário: Aeronaves
Atitude
Espaço Pessoal
[Mh] Termos MeSH secundário: Adulto
Ergonomia
Feminino
Seres Humanos
Masculino
Meia-Idade
Privacidade
Inquéritos e Questionários
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1704
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160730
[St] Status:MEDLINE
[do] DOI:10.3233/WOR-162346



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