Neurobiology Of Human Language And Its Evolution Primate And Nonprimate Perspectives

The evolution of human language has been discussed for centuries from different perspectives. Linguistic theory has proposed grammar as a core part of human language that has to be considered in this context. Recent advances in neurosciences have allowed us to take a new neurobiological look on the similarities and dissimilarities of cognitive capacities and their neural basis across both closely and distantly related species. A couple of decades ago the comparisons were mainly drawn between human and non-human primates, investigating the cytoarchitecture of particular brain areas and their structural connectivity. Moreover, comparative studies were conducted with respect to their ability to process grammars of different complexity. So far the available data suggest that non-human primates are able to learn simple probabilistic grammars, but not hierarchically structured complex grammars. The human brain, which easily learns both grammars, differs from the non-human brain (among others) in how two language-relevant brain regions (Broca’s area and superior temporal cortex) are connected structurally. Whether the more dominant dorsal pathway in humans compared to non-human primates is causally related to this behavioral difference is an issue of current debate. Ontogenetic findings suggest at least a correlation between the maturation of the dorsal pathway and the behavior to process syntactically complex structures, although a causal prove is still not available. Thus the neural basis of complex grammar processing in humans remains to be defined. More recently it has been reported that songbirds are also able to distinguish between sound sequences reflecting complex grammar. Interestingly, songbirds learn to sing by imitating adult song in a process not unlike language development in children. Moreover, the neural circuits supporting this behavior in songbirds bear anatomical and functional similarities to those in humans. In adult humans the fiber tract connecting the auditory cortex and motor cortex dorsally is known to be involved in the repetition of spoken language. This pathway is present already at birth and is taken to play a major role during language acquisition. In songbirds, detailed information exist concerning the interaction of auditory, motor and cortical-basal ganglia processing during song learning, and present a rich substrate for comparative studies. The scope of the Research Topic is to bring together contributions of researchers from different fields, who investigate grammar processing in humans, non-human primates and songbirds with the aim to find answers to the question of what constitutes the neurobiological basis of grammar learning. Open questions are: Which brain networks are relevant for grammar learning? Is there more than one dorsal pathway (one from temporal cortex to motor cortex and one to Broca’s area) and if so what are their functions? Has the ability to process sequences of a given hierarchical complexity evolved in different phylogenetic lines (birds, primates, other vocal production learners such as bats)? Is the presence of a sensory-to-motor circuit in humans a precondition for development of a dorsal pathway between the temporal cortex and Broca’s area? What role do subcortical structures (Basal Ganglia) play in vocal and grammar learning?

Neurobiology of Social Communication in Primates: An Evolutionary Perspective presents evidence on the neural basis of communicative behavior in primates, reevaluating the relationship between human language and animal communication in view of the linguistic abilities of chimpanzees. This book consists of 10 chapters. Chapter 1 discusses some of the persistent problems in evolutionary neurobiology of primate communication. The effects of brain lesions and stimulation on vocalization in New and Old World monkeys, relation between species differences in peripheral vocal structures and species contrasts in vocal performance, and anatomy and physiology of the nonhuman primate auditory system are reviewed in Chapters 2 to 4. Chapters 5 to 7 examine the effects of electrical brain stimulation on human verbal communication and facial expression, clinical data pertaining to language pathologies, and neural mechanisms of manual and oral control. The last three chapters summarize the materials presented in earlier chapters. This publication is recommended for neuroscientists, behavioral biologists, neurologists, psychiatrists, and students interested in the evolutionary heritage of human speech and language.

The last decade has seen an explosive burst of new information about human origins and our evolutionary status with respect to other species. We have long been considered unique as upright, bipedal creatures endowed with language, the ability to use tools, to think and introspect. We now know that other creatures may be more or less capable of similar behaviour, and that these human capacities in many cases have long evolutionary trajectories. Our information about such matters comes from a diverse variety of disciplines, including experimental and neuropsychology, primatology, ethology, archaeology, palaeontology, comparative linguistics and molecular biology. It is the interdisciplinary nature of the newly-emerging information which bears upon one of the profoundest scientific human questions - our origin and place in the animal kingdom, whether unique or otherwise - which makes the general topic so fascinating to layperson, student, and expert alike. The book attempts to integrate across a wide range of disciplines an evolutionary view of human psychology, with particular reference to language, praxis and aesthetics. A chapter on evolution, from the appearance of life to the earliest mammals, is followed by one which examines the appearance of primates, hominids and the advent of bipedalism. There follows a more detailed account of the various species of Homo, the morphology and origin of modern H. sapiens sapiens as seen from the archaeological/palaeontological and molecular-biological perspectives. The origins of art and an aesthetic sense in the Acheulian and Mousterian through to the Upper Palaeolithic are seen in the context of the psychology of art. Two chapters on language address its nature and realization centrally and peripherally, the prehistory and neuropsychology of speech, and evidence for speech and/or language in our hominid ancestors. A chapter on tool use and praxis examines such behaviour in other species, primate and non-primate, the neurology of praxis and its possible relation to language. Encephalization and the growth of the brain, phylogenetically and ontogenetically, and its relationship to intellectual capacity leads on finally to a consideration of intelligence, social intelligence, consciousness and self awareness. A final chapter reviews the issues covered. The book, of around 70.000 words of text, includes over 500 references over half of which date from 1994 or later.

This book addresses central questions in the evolution of language: where it came from; how it relates to primate communication; how and why it evolved; how it came to be culturally transmitted; and how languages diversified. The chapters are written from the perspective of the latest work in linguistics, neuroscience, psychology, and computer science, and reflect the idea that various cognitive, physical, neurological, social, and cultural prerequisites led to the development of full human language. Some of these evolutionary changes were preadaptations for language, while others were adaptive changes allowing the development of particular linguistic characteristics. The authors consider a broad spectrum of ideas about the conditions that led to the evolution of protolanguage and full language. Some examine changes that occurred in the course of evolution to Homo sapiens; others consider how languages themselves have adapted by evolving to be learnable. Some chapters look at the workings of the brain, and others deploy sophisticated computer simulations that model such aspects as the emergence of speech sounds and the development of grammar. All make use of the latest methods and theories to probe into the origins and subsequent development of the only species that has language. The book will interest a wide range of linguists, cognitive scientists, biologists, psychologists, neuroscientists, and experts in artificial intelligence, as well as all those fascinated by issues, puzzles, and problems raised by the evolution of language.

How did humans evolve biologically so that our brains and social interactions could support language processes, and how did cultural evolution lead to the invention of languages (signed as well as spoken)? This book addresses these questions through comparative (neuro)primatology – comparative study of brain, behavior and communication in monkeys, apes and humans – and an EvoDevoSocio framework for approaching biological and cultural evolution within a shared perspective. Each chapter provides an authoritative yet accessible review from a different discipline: linguistics (evolutionary, computational and neuro), archeology and neuroarcheology, macaque neurophysiology, comparative neuroanatomy, primate behavior, and developmental studies. These diverse perspectives are unified by having each chapter close with a section on its implications for creating a new road map for multidisciplinary research. These implications include assessment of the pluses and minuses of the Mirror System Hypothesis as an “old” road map. The cumulative road map is then presented in the concluding chapter. Originally published as a special issue of Interaction Studies 19:1/2 (2018).

How human language evolved from the need for social communication The origins of human language remain hotly debated. Despite growing appreciation of cognitive and neural continuity between humans and other animals, an evolutionary account of human language—in its modern form—remains as elusive as ever. The Social Origins of Language provides a novel perspective on this question and charts a new path toward its resolution. In the lead essay, Robert Seyfarth and Dorothy Cheney draw on their decades-long pioneering research on monkeys and baboons in the wild to show how primates use vocalizations to modulate social dynamics. They argue that key elements of human language emerged from the need to decipher and encode complex social interactions. In other words, social communication is the biological foundation upon which evolution built more complex language. Seyfarth and Cheney’s argument serves as a jumping-off point for responses by John McWhorter, Ljiljana Progovac, Jennifer E. Arnold, Benjamin Wilson, Christopher I. Petkov and Peter Godfrey-Smith, each of whom draw on their respective expertise in linguistics, neuroscience, philosophy, and psychology. Michael Platt provides an introduction, Seyfarth and Cheney a concluding essay. Ultimately, The Social Origins of Language offers thought-provoking viewpoints on how human language evolved.

This book discusses evolution of the human brain, the origin of speech and language. It covers past and present perspectives on the contentious issue of the acquisition of the language capacity. Divided into two parts, this insightful work covers several characteristics of the human brain including the language-specific network, the size of the human brain, its lateralization of functions and interhemispheric integration, in particular the phonological loop. Aboitiz argues that it is the phonological loop that allowed us to increase our vocal memory capacity and to generate a shared semantic space that gave rise to modern language. The second part examines the neuroanatomy of the monkey brain, vocal learning birds like parrots, emergent evidence of vocal learning capacities in mammals, mirror neurons, and the ecological and social context in which speech evolved in our early ancestors. This book's interdisciplinary topic will appeal to scholars of psychology, neuroscience, linguistics, biology and history.

Looks at how humans have evolved complex behaviours such as language and culture.