In addition to the hands, sign languages make extensive use of nonmanual articulators such as the body, head, and face to convey linguistic information. This collected volume focuses on the forms and functions of nonmanuals in sign languages. The articles discuss various aspects of specific nonmanual markers in different sign languages and enhance the fact that nonmanuals are an essential part of sign language grammar. Approaching the topic from empirical, theoretical, and computational perspectives, the book is of special interest to sign language researchers, typologists, and theoretical as well as computational linguists that are curious about language and modality. The articles investigate phenomena such as mouth gestures, agreement, negation, topicalization, and semantic operators, and discuss general topics such as language and modality, simultaneity, computer animation, and the interfaces between syntax, semantics, and prosody.
Originally published in Sign Language & Linguistics 14:1 (2011).

Michael W. Morgan, in: LINGUIST List 25.2309, May 26, 2014:
For sign language linguists, this is a very welcome addition to the growing literature on the subject. For general linguists (and for gesture researchers) it can also serve as an introduction to the breadth of the subject.