The neurobiology of sign language and the mirror system hypothesis
-
Karen Emmorey
Abstract
I suggest two puzzles for the Mirror System Hypothesis. First, there is little evidence that mirror neuron populations for words or for signs exist in Broca's area, and a mirror system is not critical for either speech or sign perception. Damage to Broca's area (or to the mirror system for human action) does not result in deficits in sign or speech perception. Second, the gesticulations of speakers are highly integrated with speech, but pantomimes and modern protosigns (conventional gestures) are not co-expressive with speech, and they do not co-occur with speech. Further, signers also produce global, imagistic gesticulations with their mouths and bodies simultaneously while signing with their hands. The expanding spiral of protosign and protospeech does not predict the integrated and co-expressive nature of modern gestures produced by signers and speakers.
©[2013] by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Masthead
- Introduction
- Précis of How the brain got language: The Mirror System Hypothesis
- Acquired mirroring and intentional communication in primates
- The extended features of mirror neurons and the voluntary control of vocalization in the pathway to language
- A research program in neuroimaging for an evolutionary theory of syntax
- How did vocal behavior “take over” the gestural communication system?
- The tip of the language iceberg
- Vive la différence: Sign language and spoken language in language evolution
- The neurobiology of sign language and the mirror system hypothesis
- Action and language grounding in the sensorimotor cortex
- What happens to the motor theory of perception when the motor system is damaged?
- Where does language come from? Some reflections on the role of deictic gesture and demonstratives in the evolution of language
- Archeology and the language-ready brain
- Niche construction, too, unifies praxis and symbolization
- Complex imitation and the language-ready brain
Articles in the same Issue
- Masthead
- Introduction
- Précis of How the brain got language: The Mirror System Hypothesis
- Acquired mirroring and intentional communication in primates
- The extended features of mirror neurons and the voluntary control of vocalization in the pathway to language
- A research program in neuroimaging for an evolutionary theory of syntax
- How did vocal behavior “take over” the gestural communication system?
- The tip of the language iceberg
- Vive la différence: Sign language and spoken language in language evolution
- The neurobiology of sign language and the mirror system hypothesis
- Action and language grounding in the sensorimotor cortex
- What happens to the motor theory of perception when the motor system is damaged?
- Where does language come from? Some reflections on the role of deictic gesture and demonstratives in the evolution of language
- Archeology and the language-ready brain
- Niche construction, too, unifies praxis and symbolization
- Complex imitation and the language-ready brain
