When people communicate face to face they don't just exchange verbal information. Rather, communication encompasses the whole body. Communication partners synchronize their body sway, and mimic or imitate each other's body postures and actions. They produce a multitude of manual and facial gestures that help to illustrate what is being said, show how communication partners feel, or give away verbal cues. Moreover, face-to-face communication takes place in shared contexts where partners jointly attend and refer to the same objects, often while working on joint tasks such as carrying a table or repairing a car together.
Traditionally, communication research has neglected these parts of communication using the engineering model of signal transmission as the main theoretical metaphor. This book takes a new look at recent empirical findings in the cognitive neurosciences, showing that the traditional approach is insufficient, and presenting a new interdisciplinary perspective, the Embodied Communication perspective. The core claim of the Embodied Communication perspective is that human communication involves parallel and highly interactive couplings between communication partners. These couplings range from low-level systems for performing and understanding instrumental actions, like the mirror system, to higher-systems that interpret symbols in a cultural context. The book can also serve as a guide for engineers who construct artificial agents and robots that should be able to interact with humans.

Even the simplest social interactions require us to gather, integrate, and act upon, multiple streams of information about others and our surroundings. In this Element, we discuss how perceptual processes provide us with an accurate account of action-relevant information in social contexts. We overview contemporary theories and research that explores how: (1) individuals perceive others' mental states and actions, (2) individuals perceive affordances for themselves, others, and the dyad, and (3) how social contexts guide our attention to modulate what we perceive. Finally, we review work on the cognitive mechanisms that make joint action possible and discuss their links to perception.

Embodied agents play an increasingly important role in cognitive interaction technology. The two main types of embodied agents are virtual humans inhabiting simulated environments and humanoid robots inhabiting the real world. So far research on embodied communicative agents has mainly explored their potential for practical applications. However, the design of communicative artificial agents can also be of great heuristic value for the scientific study of communication. It allows researchers to isolate, implement, and test essential properties of inter-agent communications in operational models. Modeling communication with robots and virtual humans thus involves the vision of using communicative machines as research tools. Artificial systems that reproduce certain aspects of natural, multimodal communication help to elucidate the internal mechanisms that give rise to different aspects of communication. In short, constructing embodied agents who are able to communicate may help us to understand the principles of human communication. As a comprehensive theme, "Embodied Communication in Humans and Machines" was taken up by an international research group hosted by Bielefeld University's Center for Interdisciplinary Research (ZiF - Zentrum fur interdisziplinare Forschung) from October 2005 through September 2006. The overarching goal of this research year was to develop an integrated perspective of embodiment in communication, establishing bridges between lower-level, sensorimotor functions and a range of higher-level, communicative functions involving language and bodily action. The present volume grew out of a workshop that took place during April 5-8, 2006 at the ZiF as a part of the research year on embodied communication."

The human body has long inspired artists, philosophers, musicians, and writers. Researchers in the psychological sciences, however, have only relatively recently begun to acknowledge the role the body plays in perception and cognition. With the general notion of cognition recently broadening to include its embodied nature, researchers' accounts of perception have increasingly come to include the body's special status as a window on the world and to accommodate the specific perceptual requirements for identifying, interpreting, and interacting with other bodies.
This volume presents a comprehensive overview of the rapid progress that has been made in understanding the human body and its relationship to perception. It will help to unify the relevant research from several independent areas of cognitive psychology and cognitive neuroscience and facilitate the development of an integrated framework for the study of human-body perception. Its sections cover the four major lines of research that have contributed and will continue to contribute to this new framework: body and multimodal perception, body representation, perception of biological motion, and intention and action in body perception. Each chapter provides a state-of-the-art account of exciting theoretical developments and empirical advances, and section introductions integrate the chapters and establish each section's place in the broader context of human-body-perception research. This volume will be an invaluable guide for student and professional researchers in visual perception, cognitive psychology, and cognitive neuroscience.