Communicative interactions in point-light displays: Choosing among multiple response alternatives

El propósito de la investigación consistió en analizar las tecnologías de enlace de datos usadas actualmente en las redes metropolitanas en las empresas en la ciudad de Barranquilla, Colombia con el fin de determinar las características que tienen en cuenta dichas empresas para su implementación y cuál de dichas tecnología es la más usada. La población estuvo conformada por 18 empresas que usan interconexiones a través de redes metropolitanas como un elemento indispensable para el desarrollo de sus labores. Se utilizó la técnica de observación por encuesta, y como instrumento, el cuestionario dirigido a la población de estudio, el mismo estuvo conformado por 28 preguntas de múltiples alternativas de respuesta. En cuanto a la validez del instrumento se utilizó la evidencia relacionada con el contenido a través de la opinión de los expertos. Los resultados evidencian que existen múltiples alternativas de interconexión para las diferentes sedes en el área metropolitana de las empresas e igualmente que existen diversos factores que tienen en cuenta dichas empresas al momento de decidir que tecnología implementar. AbstractThe purpose of this research was to analyze the data link technologies currently used in metropolitan networks in enterprises in the city of Barranquilla, Colombia to determine the characteristics that take into account these companies to implement and which of these technology is most used. The population consisted of 18 companies using interconnections through metropolitan networks as essential to the development of their work. We used the observation by technical survey, and as an instrument, the questionnaire addressed to the study population, it consisted of 28 questions of multiple response alternatives. As to the validity of the instrument was used the evidence relating to the content through expert opinion. The results show that there are multiple alternatives to interconnect the various sites in the metropolitan area of business and also that there are several factors that consider these companies when deciding which technology to implement. Along this line of thought the factors that are affecting the connection speed and quality of service.

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Psychophysical reverse correlation with multiple response alternatives.

Journal of Experimental Psychology Human Perception & Performance ◽

10.1037/a0017171 ◽

2010 ◽

Vol 36 (4) ◽

pp. 976-993 ◽

Cited By ~ 10

Author(s):

Huanping Dai ◽

Christophe Micheyl

Keyword(s):

Reverse Correlation ◽

Multiple Response ◽

Response Alternatives

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Brain correlates of recognition of communicative interactions from biological motion in schizophrenia

Psychological Medicine ◽

10.1017/s0033291717003385 ◽

2017 ◽

Vol 48 (11) ◽

pp. 1862-1871 ◽

Cited By ~ 5

Author(s):

Ł. Okruszek ◽

M. Wordecha ◽

M. Jarkiewicz ◽

B. Kossowski ◽

J. Lee ◽

...

Keyword(s):

Cognitive Processing ◽

Neural Activity ◽

Social Cognitive ◽

Body Motion ◽

Whole Body ◽

Sources Of Information ◽

Communicative Interaction ◽

Communicative Interactions ◽

Point Light ◽

The Right

BackgroundRecognition of communicative interactions is a complex social cognitive ability which is associated with a specific neural activity in healthy individuals. However, neural correlates of communicative interaction processing from whole-body motion have not been known in patients with schizophrenia (SCZ). Therefore, the current study aims to examine the neural activity associated with recognition of communicative interactions in SCZ by using displays of the dyadic interactions downgraded to minimalistic point-light presentations.MethodsTwenty-six healthy controls (HC) and 25 SCZ were asked to judge whether two agents presented only by point-light displays were communicating or acting independently. Task-related activity and functional connectivity of brain structures were examined with General Linear Model and Generalized Psychophysiological Interaction approach, respectively.ResultsHC were significantly more efficient in recognizing each type of action than SCZ. At the neural level, the activity of the right posterior superior temporal sulcus (pSTS) was observed to be higher in HC compared with SCZ for communicativev.individual action processing. Importantly, increased connectivity of the right pSTS with structures associated with mentalizing (left pSTS) and mirroring networks (left frontal areas) was observed in HC, but not in SCZ, during the presentation of social interactions.ConclusionUnder-recruitment of the right pSTS, a structure known to have a pivotal role in social processing, may also be of importance for higher-order social cognitive deficits in SCZ. Furthermore, decreased task-related connectivity of the right pSTS may result in reduced use of additional sources of information (for instance motor resonance signals) during social cognitive processing in schizophrenia.

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Social Perception and Interaction Database – a novel tool to study social cognitive processes with point-light displays

10.1101/729996 ◽

2019 ◽

Cited By ~ 1

Author(s):

Ł. Okruszek ◽

M. Chrustowicz

Keyword(s):

Social Perception ◽

Social Information Processing ◽

Open Science ◽

Third Party ◽

Healthy Individuals ◽

Interaction Database ◽

Communicative Interactions ◽

Wide Range ◽

Individual Actions ◽

Point Light

AbstractIntroductionThe ability to detect and interpret third-party encounters (TPE) is one of the crucial skills enabling people to operate in the social world. Multiple lines of evidence converge towards the preferential processing of TPE when compared to the individual actions of multiple agents, even if the actions of agents were visually degraded to minimalistic point-light displays (PLDs). Here, we present a novel PLD dataset (Social Perception and Interaction Database; SoPID) that may be used for studying multiple levels of social information processing.MethodsDuring a motion-capture session, two pairs of actors were asked to perform a wide range of dyadic 3-second actions, including: (1) neutral, gesture-based communicative interactions (COM); (2) emotional exchanges (Happy/Angry); (3) synchronous physical activity of actors (SYNC); and (4) independent actions of agents, either object-related (ORA) or non-object related (NORA). The stimuli were then transformed into PLDs. Two validation studies (each with 20 healthy individuals) were then performed to establish the recognizability of the SoPID vignettes.ResultsThe first study showed a ceiling level accuracy for discrimination of communicative vs. individual actions (93% +/- 5%) and high accuracy for interpreting specific types of actions (85 +/- 4%) from the SoPID. In the second study, a robust effect of scrambling on the recognizability of SoPID vignettes was observed in an independent sample of healthy individuals.DiscussionThese results suggest that the SoPID may be effectively used to examine processes associated with communicative interactions and intentions processing. The database can be accessed via Open Science Framework (https://osf.io/dcht8/).

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A confocal laser scanning microscope for fluorescence and reflection at video rates

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100152641 ◽

1989 ◽

Vol 47 ◽

pp. 134-135

Author(s):

P.M. Houpt ◽

A. Draaijer

Keyword(s):

Light Source ◽

Laser Scanning ◽

Focal Point ◽

Confocal Laser Scanning Microscope ◽

Confocal Laser ◽

Point Light Source ◽

Volume Of Interest ◽

Ion Laser ◽

Point Light ◽

Point Detector

In confocal microscopy, the object is scanned by the coinciding focal points (confocal) of a point light source and a point detector both focused on a certain plane in the object. Only light coming from the focal point is detected and, even more important, out-of-focus light is rejected.This makes it possible to slice up optically the ‘volume of interest’ in the object by moving it axially while scanning the focused point light source (X-Y) laterally. The successive confocal sections can be stored in a computer and used to reconstruct the object in a 3D image display.The instrument described is able to scan the object laterally with an Ar ion laser (488 nm) at video rates. The image of one confocal section of an object can be displayed within 40 milliseconds (1000 х 1000 pixels). The time to record the total information within the ‘volume of interest’ normally depends on the number of slices needed to cover it, but rarely exceeds a few seconds.

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Contributions of Voice and Nonverbal Communication to Perceived Masculinity–Femininity for Cisgender and Transgender Communicators

Journal of Speech Language and Hearing Research ◽

10.1044/2019_jslhr-19-00387 ◽

2020 ◽

Vol 63 (4) ◽

pp. 931-947

Author(s):

Teresa L. D. Hardy ◽

Carol A. Boliek ◽

Daniel Aalto ◽

Justin Lewicke ◽

Kristopher Wells ◽

...

Keyword(s):

Fundamental Frequency ◽

Sound Pressure Level ◽

Sound Pressure ◽

Vocal Tract ◽

Presentation Mode ◽

Pressure Level ◽

Presentation Modes ◽

Audiovisual Stimuli ◽

Vocal Tract Resonance ◽

Point Light

Purpose The purpose of this study was twofold: (a) to identify a set of communication-based predictors (including both acoustic and gestural variables) of masculinity–femininity ratings and (b) to explore differences in ratings between audio and audiovisual presentation modes for transgender and cisgender communicators. Method The voices and gestures of a group of cisgender men and women ( n = 10 of each) and transgender women ( n = 20) communicators were recorded while they recounted the story of a cartoon using acoustic and motion capture recording systems. A total of 17 acoustic and gestural variables were measured from these recordings. A group of observers ( n = 20) rated each communicator's masculinity–femininity based on 30- to 45-s samples of the cartoon description presented in three modes: audio, visual, and audio visual. Visual and audiovisual stimuli contained point light displays standardized for size. Ratings were made using a direct magnitude estimation scale without modulus. Communication-based predictors of masculinity–femininity ratings were identified using multiple regression, and analysis of variance was used to determine the effect of presentation mode on perceptual ratings. Results Fundamental frequency, average vowel formant, and sound pressure level were identified as significant predictors of masculinity–femininity ratings for these communicators. Communicators were rated significantly more feminine in the audio than the audiovisual mode and unreliably in the visual-only mode. Conclusions Both study purposes were met. Results support continued emphasis on fundamental frequency and vocal tract resonance in voice and communication modification training with transgender individuals and provide evidence for the potential benefit of modifying sound pressure level, especially when a masculine presentation is desired.

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The Effect of Alternative Scoring Procedures on the Measurement Properties of a Self-Administered Depression Scale

European Journal of Psychological Assessment ◽

10.1027/1015-5759/a000371 ◽

2019 ◽

Vol 35 (1) ◽

pp. 55-62 ◽

Cited By ~ 1

Author(s):

Noboru Iwata ◽

Akizumi Tsutsumi ◽

Takafumi Wakita ◽

Ryuichi Kumagai ◽

Hiroyuki Noguchi ◽

...

Keyword(s):

Classical Test Theory ◽

Depression Scale ◽

Psychometric Testing ◽

Epidemiologic Studies ◽

Test Theory ◽

Measurement Properties ◽

Irt Model ◽

Response Alternatives ◽

Polytomous Item Response ◽

Θ Point

Abstract. To investigate the effect of response alternatives/scoring procedures on the measurement properties of the Center for Epidemiologic Studies Depression Scale (CES-D) which has the four response alternatives, a polytomous item response theory (IRT) model was applied to the responses of 2,061 workers and university students (1,640 males, 421 females). Test information functions derived from the polytomous IRT analyses on the CES-D data with various scoring procedures indicated that: (1) the CES-D with its standard (0-1-2-3) scoring procedure should be useful for screening to detect subjects with “at high-risk” of depression if the θ point showing the highest information corresponds to the cut-off point, because of its extremely higher information; (2) the CES-D with the 0-1-1-2 scoring procedure could cover wider range of depressive severity, suggesting that this scoring procedure might be useful in cases where more exhaustive discrimination in symptomatology is of interest; and (3) the revised version of CES-D with replacing original positive items into negatively revised items outperformed the original version. These findings have never been demonstrated by the classical test theory analyses, and thus the utility of this kind of psychometric testing should be warranted to further investigation for the standard measures of psychological assessment.

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