Ubiquitous computing is giving rise to applications that interact very closely with activity in the real world, usually involving instrumentation of environments. In contrast, we propose Cooperative Artefacts that are able to cooperatively assess their situation in the world, without need for supporting infrastructure in the environment. The Cooperative Artefact concept is based on embedded dom...

Decision-making behavior has been studied extensively, but the neurophysiological mechanisms responsible for this remarkable cognitive ability are just beginning to be understood. Here we propose neural computations that can account for the formation of categorical decisions about sensory stimuli by accumulating information over time into a single quantity: the logarithm of the likelihood ratio...

Ambient Intelligence and Affective Computing areas are working on trying to make interfaces more natural from the human side. Taking personal, device and system characteristics into account, adaptive interfaces might help to achieve a greater user satisfaction and it is expected the results can be enhanced when bearing user affectivity in mind. In this paper, an ontology that describes affectiv...

In this paper, we present a perceptual audio coding method that encodes the audio using perceptually salient envelope features. These features are found by passing the audio through a set of gammatone filters, and then computing the Hilbert envelopes of the responses. Relevant points of these envelopes are isolated and transmitted to the decoder. The decoder reconstructs the audio in an iterati...

In this report we discuss multimodal interface technology. We present examples of multimodal interfaces and show problems and opportunities. Fusion of modalities is discussed and some roadmap discussions on research in Multimodality are summarized. This report also discusses future developments where rather than communicating with a single computer, users communicate with their environment usin...

A global inversion procedure from the acoustic signal to motor commands is presented here based on a postural target invariance hypothesis. Using a model of vowel production, dynamic motor commands were inferred for a vowel sequence pronounced under different levels of emphasis stress and rate. The results enable to assign a prosodic role to the dynamic parameters of the model and thus to discr...

the aim of this study was to investigate the effect of perceptual-motor and music enrichment of environment on the development of fine and gross motor movements in infants. 32 healthy infants (5 to 8 months old) participated in this study and were divided homogenously into four groups (each group 8 subjects): three experimental groups and one control group. experimental groups had 36 training s...