Pathogenic bacteria express distinct sets of genes at different stages in their life cycles; inappropriate expression of normally repressed genes during host colonization can interfere with bacterial survival.

One consequence of situated face-to-face conversation is the coobservability of participants’ respiratory movements and sounds. We explore whether this information can be exploited in predicting incipient speech activity. Using a methodology called stochastic turn-taking modeling, we compare the performance of a model trained on speech activity alone to one additionally trained on static and dy...

Stimuli composed of two overlapped faces, one rotated 45 degrees clockwise and the other 45 degrees counterclockwise, produce perceptual rivalry whereby both faces cannot be simultaneously perceived. We obtained subjective and quantitative measures of this rivalry effect and examined if it persists with inverted stimuli. Our results show that upright stimuli are multistable, with alternations o...

The paper describes the design of a novel corpus of respiratory activity in spontaneous multiparty face-to-face conversations in Swedish. The corpus is collected with the primary goal of investigating the role of breathing for interactive control of interaction. Physiological correlates of breathing are captured by means of respiratory belts, which measure changes in cross sectional area of the...

Standard multivariate statistical methods in medical applications are too sensitive to the assumption of multivariate normality and the presence of outliers in the data. This paper is devoted to robust statistical methods. In the context of medical image analysis they allow to solve the tasks of face detection and face recognition in a database of images. The results of the robust approaches in...

We describe the results of an experiment investigating whether an avatar’s facial feedback can enhance turn-taking, undertaken as part of a usability study of a preliminary version of the COMIC multimodal dialogue system. The study focused on the phase of the interaction where the avatar embodies a virtual sales agent that guides the user through a range of possible tiling options for his or he...

Abstract This study explores fuzzy boundaries, or weak cesuras, in the particle combination OH + OKAY as used informing sequences ordinary English talk-in-interaction. The focus is on third position such sequences, where responds to information that has been solicited by speaker a prior turn. Based collection of approximately 45 instances recent American telephone and face-to-face interactions,...

Motivation: Natural objects are hierarchical. For example, a face consists of individual parts, like eyes, a nose and a mouth, which are objects themselves. A dilemma becomes apparent when ones tries to include information about the parts in the representation of the whole object: Having the neurons that code for the parts, e.g. for a mouth, feed into the units that code for the face leads to i...

A comprehensive approach for describing the functional and behavioral aspects of communicative actions, e.g. facial, manual, and vocal tract actions, has been established for face-to-face-communication (Cogn Process 11:187-205, 2010). Within the speech domain, this approach will now be extended in two ways: (i) by introducing level actions such as turn, breath group, phrase, stress group, sylla...

With the increasing penetration of mobile phones, problematic use of mobile phone (PUMP) deserves attention. In this study, using a path model we examined the relationship between depression and PUMP, with motivations as mediators. Findings suggest that depressed people may rely on mobile phone to alleviate their negative feelings and spend more time on communication activities via mobile phone...