Search results for " imitation"

An adaptive probabilistic graphical model for representing skills in PbD settings

2010

Anchoring by Imitation Learning in Conceptual Spaces

2005

In order to have a robotic system able to effectively learn by imitation, and not merely reproduce the movements of a human teacher, the system should have the capabilities of deeply understanding the perceived actions to be imitated. This paper deals with the development of a cognitive architecture for learning by imitation in which a rich conceptual representation of the observed actions is built. The purpose of the following discussion is to show how the same conceptual representation can be used both in a bottom-up approach, in order to learn sequences of actions by imitation learning paradigm, and in a top-down approach, in order to anchor the symbolical representations to the perceptu…

Voluntary Imitation in Alzheimer’s Disease Patients

2016

International audience; Although Alzheimer's disease (AD) primarily manifests as cognitive deficits, the implicit sensorimotor processes that underlie social interactions, such as automatic imitation, seem to be preserved in mild and moderate stages of the disease, as is the ability to communicate with other persons. Nevertheless, when AD patients face more challenging tasks, which do not rely on automatic processes but on explicit voluntary mechanisms and require the patient to pay attention to external events, the cognitive deficits resulting from the disease might negatively affect patients' behavior. The aim of the present study was to investigate whether voluntary motor imitation, i.e.…

Productions en série vers 1500 avant notre ère. Des règles de fabrication au Bronze moyen entre la Manche et les Alpes à la lumière d’une étude morph…

2013

Some European Bronze Age objects were produced by what has been described as serial metalworking. One particularexample is the Middle Bronze Age palstave, massively produced and used in Western Europe during the mid-second millennium BC.These artefacts were often voluntarily buried together in hoards, meaning they were removed from the production network, thus avoidingany recycling. They are found intact, either as rough castings or ready for use. These homogeneous objects are grouped in sets of severalitems, or in tens, or even in hundreds. Such discoveries have immediately led to numerous questions as to the possible interpretation ofthis behaviour. It is clear that prehistoric craftsmen …

Human Sensorimotor Communication: A Theory of Signaling in Online Social Interactions

2013

Although the importance of communication is recognized in several disciplines, it is rarely studied in the context of online social interactions and joint actions. During online joint actions, language and gesture are often insufficient and humans typically use non-verbal, sensorimotor forms of communication to send coordination signals. For example, when playing volleyball, an athlete can exaggerate her movements to signal her intentions to her teammates (say, a pass to the right) or to feint an adversary. Similarly, a person who is transporting a table together with a co-actor can push the table in a certain direction to signal where and when he intends to place it. Other examples of ``si…

Music as a mnemonic to learn gesture sequences in normal aging and Alzheimer’s disease

2014

Strong links between music and motor functions suggest that music could represent an interesting aid for motor learning. The present study aims for the first time to test the potential of music to assist in the learning of sequences of gestures in normal and pathological aging. Participants with mild Alzheimer's disease (AD) and healthy older adults (Controls) learned sequences of meaningless gestures that were either accompanied by music or a metronome. We also manipulated the learning procedure such that participants had to imitate the gestures to-be-memorized in synchrony with the experimenter or after the experimenter during encoding. Results show different patterns of performance for t…

Motor Resonance Mechanisms during Action Imitation in Depression

2018

Objectives Major depressive disorder has been associated with impairments in social cognition. However, studies exploring the processing of social information focused on facial discrimination. The aim of this study was to better characterize the sensorimotor mechanisms underlying motor resonance in depressed patients. Method Twenty-three right-handed patients meeting DSM-IV criteria for unipolar depression were compared to 14 matched healthy controls. In a simple imitation paradigm, the kinematic features of movements in natural condition were compared to those of motions performed after the observation of a moving dot. Reaction time and pointing velocity were considered to evaluate if the …

Singing as a form of vocal imitation - Mechanisms and deficits

2009

There has been a recent upsurge of interest in the neural and cognitive bases of inaccurate singing, commonly referred to as “tone deafness.” Explanations of this deficit have commonly focused on perceptual and motor functions. It is clear, however, that neither of these mechanisms can fully account for deficits in singing. We summarize the results of several studies concerning inaccurate, or “poor pitch” singing. Taken together, the results of these studies argue that the basis for singing-related deficits lies in the link between perception and action, rather than strictly motoric or perceptual factors. Moreover, singing deficits may involve general purpose vocal imitation mechanisms, rat…

Sketching sonic interactions by imitation-driven sound synthesis

2016

Sketching is at the core of every design activity. In visual design, pencil and paper are the preferred tools to produce sketches for their simplicity and immediacy. Analogue tools for sonic sketching do not exist yet, although voice and gesture are embodied abilities commonly exploited to communicate sound concepts. The EU project SkAT-VG aims to support vocal sketching with computeraided technologies that can be easily accessed, understood and controlled through vocal and gestural imitations. This imitation-driven sound synthesis approach is meant to overcome the ephemerality and timbral limitations of human voice and gesture, allowing to produce more refined sonic sketches and to think a…

Vokālās imitācijas pilnveide pirmsskolas vecuma bērniem ar autiska spektra traucējumiem

2021

Maģistra darba tēma: Vokālās imitācijas pilnveide pirmsskolas vecuma bērniem ar autiska spektra traucējumiem Darba autore: Marija Skerškāne Darba vadītāja: Prof., Dr. paed. Sarmīte Tūbele Darba apjoms: 110 lpp, kas ietver 3 nodaļas, 8 apakšnodaļas un 9 pielikumus. Darbs satur 5 tabulas, 3 grafikus, izmantotās literatūras sarakstu ar 75 informācijas avotiem. Pētījuma mērķis: Izpētīt kā, izmantojot Kaufmanes runas prakses testa (turpmāk tekstā KRPT) kategorijas, var pilnveidot pirmsskolas vecuma bērnu ar autiska spektra traucējumiem (turpmāk tekstā AST) vokālo imitāciju. Pētījuma problēma: Bērniem ar AST ir traucēta vokālās imitācijas apguve, kā arī logopēdijā trūkst materiālu grūtību līmeľa …