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Multisensory Perception And Action: Psychophysics, Neural Mechanisms, And Applications

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889193813 Year: Pages: 174 DOI: 10.3389/978-2-88919-381-3 Language: English
Publisher: Frontiers Media SA
Subject: Neurology --- Science (General)
Added to DOAB on : 2015-12-03 13:02:24
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Our senses are not separated. Information received from one sensory modality may be linked with, or distorted by information provided from another modality, such as in the ventriloquism illusion and experiences of crossmodal correspondence. Scientific interest in how we integrate multisensory information and how we interact with a multisensory world has increased dramatically over the last two decades, as evidenced by an exponential growth of relevant studies using behavioral and/or neuro-scientific approaches to investigate multisensory integration and the underlying brain mechanisms. This work has revealed that the brain integrates information across senses in a statistically optimal manner; also, some key multisensory brain areas, such as the superior colliculus, have been identified. However, many questions remain unresolved. For example, at what age do we develop optimal multisensory integration? How does the brain 'know' which stimuli to combine, and which to segregate? What are the principles that govern crossmodal interactions? Does multisensory integration rely solely on the variability of sensory information? Do primary sensory cortices also contribute to multisensory integration? How does multisensory integration influence our sensorimotor interactions? To take stock of the most recent developments, this Research Topic aims to provide a broad scope of research on multisensory perception and action from different perspectives/approaches and disciplines, including behavioral and neuro-sciences, computational/mathematical modeling, and engineering science. Specifically, the Research Topic will focus on the following topics: 1. Functional and behavioral mechanisms of multisensory perception 2. Neural mechanisms of multisensory coding 3. Multisensory perception and sensorimotor interaction 4. Multisensory applications

Synaesthesia

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889195596 Year: Pages: 211 DOI: 10.3389/978-2-88919-559-6 Language: English
Publisher: Frontiers Media SA
Subject: Psychology --- Science (General)
Added to DOAB on : 2016-01-19 14:05:46
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Synaesthesia is a rare experience in which one property of a stimulus evokes a secondary experience that is not typically associated with the first (e.g. hearing words can evoke tastes). In recent years a number of studies have highlighted the authenticity of synaesthesia and attempted to use the experience to inform us about typical processes in perception and cognition.This Research Topic brings together research on synaesthesia and typical cross modal interactions to discuss the mechanisms of synaesthesia and what it can tell us about typical perceptual processes. Topics include, but are not limited to, the neurocognitive mechanisms that give rise to synaesthesia; the extent to which synaesthesia does / does not share commonalities with typical cross-modal correspondences; broader cognitive and perceptual consequences that are linked to synaesthesia; and perspectives on the origins / defining characteristics of synaesthesia.

Multisensory Human-Food Interaction

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889455188 Year: Pages: 101 DOI: 10.3389/978-2-88945-518-8 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Psychology
Added to DOAB on : 2019-01-23 14:53:42
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Our food experiences can be significantly influenced by both intrinsic and extrinsic multisensory information. Therefore, it is crucial to understand and apply the principles that govern the systematic connections that exist between the senses in the context of Human-Food Interaction (HFI). In our Research Topic, namely Multisensory Human-Food Interaction (MHFI), several studies that consider such connections in the context of HFI are presented. We also have contributions that focus on multisensory technologies that can be used to share and reproduce specific HFIs. This eBook, which resulted from the Research Topic, presents some of the most recent developments in the field of MHFI. In particular, it consists of two main sections and corresponding articles. The eBook begins with the Editorial, which provides an overview of MHFI. Then, it includes six articles that relate to principles in MHFI and three on technologies in MHFI. We hope that the different contributions featured here will support future developments in MHFI research.

Neural processing of emotion in multimodal settings

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889194148 Year: Pages: 274 DOI: 10.3389/978-2-88919-414-8 Language: English
Publisher: Frontiers Media SA
Subject: Neurology --- Science (General)
Added to DOAB on : 2015-12-10 11:59:06
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Our everyday life is characterized by a multitude of emotionally relevant cues that we perceive and communicate via various sensory channels. This does not only encompass the obvious cases of auditory and visual modalities, but also olfactory, gustatory, and even tactile stimuli. Any kind of emotional situation in a natural setting is usually a multimodal experience: A friend welcomes us with warm words, a smile, and a happy voice; the sight of our favourite food is accompanied by a seductive smell and a delicious taste; the thrill of watching an exciting movie scene is intensified by a gripping soundtrack. In these situations, the signals from various senses do not stand on their own; they interact and create a unified emotional experience. Recent neuroscientific research has begun to accommodate this inherent multimodality of emotions in natural situations by studying the interaction of affectively relevant information from more than one sensory channel. Fascinating new aspects emerge concerning the neurobiology of emotion processing, and there is evidence that integrating emotional cues from various sources invokes brain processes that go beyond the well-known patterns observed during unimodal stimulation. The aim of this volume is to present novel and interesting studies dealing with the multimodality of emotions and their neural processing. This includes findings from novel paradigms beyond the classical stimulus-response pattern, fascinating new insights into the interaction of the chemical senses, new analysis methods, comprehensive reviews of selected topics, multimodality in social interactions, and clinical perspectives. Taken together, the studies of this volume thus help us to better understand the interplay of various senses in our daily emotional experiences.

Body, space and pain

Authors: --- --- ---
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889192915 Year: Pages: 127 DOI: 10.3389/978-2-88919-291-5 Language: English
Publisher: Frontiers Media SA
Subject: Neurology --- Science (General)
Added to DOAB on : 2015-12-10 11:59:07
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There is growing interest in understanding how the perception of pain (and touch) is influenced by the way we represent our body and the space surrounding it. Recent views argue that pain can only be understood in a larger framework of body perception and action. This attention is driven by accumulating research in experimental and clinical domains, indicating that pain perception depends largely on cognitive factors and multisensory integration. The interest is also boosted by studies on chronic pain conditions suggesting a tight link between body perception and the maintenance of pain. Many aspects remain yet to be elucidated. We welcomed submissions from researchers in cognitive neuroscience and pain to increase our understanding of the interplay among body, space, pain, touch and movement. We aimed to gather insights from different theoretical frameworks and encouraged investigators using a broad range of methods including (but not limited to) behavioural and neuropsychological approaches, imaging techniques, electrophysiology, psychophysiology and TMS to present their results in this Research Topic. In the attempt to go from bench- to bedside we also strongly encouraged submissions from clinicians and physiotherapist whose contribution may help rising some future key questions. Qualitative and phenomenological approaches were also welcome.

Multisensory and sensorimotor interactions in speech perception

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889195480 Year: Pages: 263 DOI: 10.3389/978-2-88919-548-0 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Psychology
Added to DOAB on : 2016-01-19 14:05:46
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Speech is multisensory since it is perceived through several senses. Audition is the most important one as speech is mostly heard. The role of vision has long been acknowledged since many articulatory gestures can be seen on the talker's face. Sometimes speech can even be felt by touching the face. The best-known multisensory illusion is the McGurk effect, where incongruent visual articulation changes the auditory percept. The interest in the McGurk effect arises from a major general question in multisensory research: How is information from different senses combined? Despite decades of research, a conclusive explanation for the illusion remains elusive. This is a good demonstration of the challenges in the study of multisensory integration. Speech is special in many ways. It is the main means of human communication, and a manifestation of a unique language system. It is a signal with which all humans have a lot of experience. We are exposed to it from birth, and learn it through development in face-to-face contact with others. It is a signal that we can both perceive and produce. The role of the motor system in speech perception has been debated for a long time. Despite very active current research, it is still unclear to which extent, and in which role, the motor system is involved in speech perception. Recent evidence shows that brain areas involved in speech production are activated during listening to speech and watching a talker's articulatory gestures. Speaking involves coordination of articulatory movements and monitoring their auditory and somatosensory consequences. How do auditory, visual, somatosensory, and motor brain areas interact during speech perception? How do these sensorimotor interactions contribute to speech perception? It is surprising that despite a vast amount of research, the secrets of speech perception have not yet been solved. The multisensory and sensorimotor approaches provide new opportunities in solving them. Contributions to the research topic are encouraged for a wide spectrum of research on speech perception in multisensory and sensorimotor contexts, including novel experimental findings ranging from psychophysics to brain imaging, theories and models, reviews and opinions.

Embodying the Self: Neurophysiological Perspectives on the Psychopathology of Anomalous Bodily Experiences

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889454563 Year: Pages: 174 DOI: 10.3389/978-2-88945-456-3 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Neurology
Added to DOAB on : 2018-11-16 17:17:57
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Since the beginning of the 20th Century, phenomenology has developed a distinction between lived body (Leib) and physical body (Koerper), a distinction well known as body-subject vs. body-object (Hanna and Thompson 2007). The lived body is the body experienced from within - my own direct experience of my body lived in the first-person perspective, myself as a spatiotemporal embodied agent in the world. The physical body on the other hand, is the body thematically investigated from a third person perspective by natural sciences as anatomy and physiology. An active topic affecting the understanding of several psychopathological disorders is the relatively unknown dynamic existing between aspects related to the body-object (that comprises the neurobiological substrate of the disease) and the body-subject (the experiences reported by patients) (Nelson and Sass 2017). A clue testifying the need to better explore this dynamic in the psychopathological context is the marked gap that still exists between patients’ clinical reports (generally entailing disturbing experiences) and etiopathogenetic theories and therapeutic practices, that are mainly postulated at a bodily/brain level of description and analysis. The phenomenological exploration typically targets descriptions of persons’ lived experience. For instance, patients suffering from schizophrenia may describe their thoughts as alien (‘‘thoughts are intruding into my head’’) and the world surrounding them as fragmented (‘‘the world is a series of snapshots’’) (Stanghellini et al., 2015). The result is a rich and detailed collection of the patients’ qualitative self-descriptions (Stanghellini and Rossi, 2014), that reveal fundamental changes in the structure of experiencing and can be captured by using specific assessment tools (Parnas et al. 2005; Sass et al. 2017; Stanghellini et al., 2014).The practice of considering the objective and the subjective levels of analysis as separated in the research studies design has many unintended consequences. Primarily, it has the effect of limiting actionable neuroscientific progress within clinical practice. This holds true both in terms of availability of evidence-based treatments for the disorders, as well as for early diagnosis purposes. In response to this need, this collection of articles aims to promote an interdisciplinary endeavor to better connect the bodily, objective level of analysis with its experiential corollary. This is accomplished by focusing on the convergence between (neuro) physiological evidence and the phenomenological manifestations of anomalous bodily experiences present in different disorders.

Multisensor Systems for Analysis of Liquids and Gases: Trends and Developments

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889457212 Year: Pages: 175 DOI: 10.3389/978-2-88945-721-2 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Chemistry (General)
Added to DOAB on : 2019-01-23 14:53:43
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Nowadays the application of multisensor systems for the analysis of liquids and gases is becoming more and more popular in analytical chemistry. Such systems, also known as “electronic tongues” and “electronic noses” are based on various types of chemical sensors and biosensors with different transduction principles combined with multivariate data processing protocols. These instruments received significant interest due to their simplicity, low costs and the possibility to obtain reliable chemical information from complex unresolved analytical signals. A distinct feature of electronic tongues and noses is that they can be calibrated for prediction of complex integral features in samples, like e.g. taste, odor, toxicity, geographical origin, general conformity with certain standards, etc. – the tasks that otherwise would require involvement of complex analytical instrumentation, human or animal sensory panels. In the present eBook the original research and review articles in the area of multisensor approach are collected. They dedicated to the novel sensor materials development, measuring techniques evaluation, electronics, data processing protocols and practical applications. An editorial foreword article is followed by the researches authored by leading scientists in the field of chemical sensors and artificial sensing systems. With this eBook we hope to inspire further interest and new research efforts in this exciting area.

Audiovisual Speech Recognition: Correspondence between Brain and Behavior

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889192519 Year: Pages: 101 DOI: 10.3389/978-2-88919-251-9 Language: English
Publisher: Frontiers Media SA
Subject: Psychology --- Science (General)
Added to DOAB on : 2015-11-16 15:44:59
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Perceptual processes mediating recognition, including the recognition of objects and spoken words, is inherently multisensory. This is true in spite of the fact that sensory inputs are segregated in early stages of neuro-sensory encoding. In face-to-face communication, for example, auditory information is processed in the cochlea, encoded in auditory sensory nerve, and processed in lower cortical areas. Eventually, these "sounds" are processed in higher cortical pathways such as the auditory cortex where it is perceived as speech. Likewise, visual information obtained from observing a talker’s articulators is encoded in lower visual pathways. Subsequently, this information undergoes processing in the visual cortex prior to the extraction of articulatory gestures in higher cortical areas associated with speech and language. As language perception unfolds, information garnered from visual articulators interacts with language processing in multiple brain regions. This occurs via visual projections to auditory, language, and multisensory brain regions. The association of auditory and visual speech signals makes the speech signal a highly "configural" percept. An important direction for the field is thus to provide ways to measure the extent to which visual speech information influences auditory processing, and likewise, assess how the unisensory components of the signal combine to form a configural/integrated percept. Numerous behavioral measures such as accuracy (e.g., percent correct, susceptibility to the “McGurk Effect”) and reaction time (RT) have been employed to assess multisensory integration ability in speech perception. On the other hand, neural based measures such as fMRI, EEG and MEG have been employed to examine the locus and or time-course of integration. The purpose of this Research Topic is to find converging behavioral and neural based assessments of audiovisual integration in speech perception. A further aim is to investigate speech recognition ability in normal hearing, hearing-impaired, and aging populations. As such, the purpose is to obtain neural measures from EEG as well as fMRI that shed light on the neural bases of multisensory processes, while connecting them to model based measures of reaction time and accuracy in the behavioral domain. In doing so, we endeavor to gain a more thorough description of the neural bases and mechanisms underlying integration in higher order processes such as speech and language recognition.

Multisensory Integration: Brain, Body and the World

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889197927 Year: Pages: 186 DOI: 10.3389/978-2-88919-792-7 Language: English
Publisher: Frontiers Media SA
Subject: Psychology --- Science (General)
Added to DOAB on : 2016-04-07 11:22:02
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Behaviour, language, and reasoning are expressions of neural functions par excellence, as the brain must draw on sensory modalities to gather information on the rest of the body and on the outer world. Cortical areas processing the identity and location of sensory inputs were once thought to be organised hierarchically, with some branches dedicated to basic features and other branches dedicated to complex features. Yet current studies have uncovered synergistic effects at early sensory cortices as well as at higher-level association areas. A less hierarchical functional architecture of the brain has emerged such that, irrespective of sensory modality, inputs would be allocated to the best suited cortical substrate. It is our hope that the articles included in this special issue will offer novel insights into recent developments relating to multisensory integration and brain functioning.

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