Meeting Abstract LBS1.4  Thursday, Jan. 3  Variation in EMG Activity during Feeding: A Hierarchical Approach GERMAN, R.Z.*; CROMPTON, A.W.; THEXTON, A.J.; Johns Hopkins University; Harvard University; King’s College, London rz.german@jhmi.edu During repetitions of apparently identical movements, there are several potential sources of temporal variation in the rectified and integrated EMG signals recorded by a single bipolar intramuscular […]

Meeting Abstract LBS1.8  Thursday, Jan. 3  The relationship between EMG and strain rate in muscle fascicles: what should we expect and what do we find? CARROLL, Andrew M.*; RICHARDS, Christopher; Concord Field Station, Harvard University; Concord Field Station, Harvard University acarroll@oeb.harvard.edu Electromyographic intensity is generally agreed to reflect the area of recruited fascicles, and, thus, increases in […]

Meeting Abstract LBS1.6  Thursday, Jan. 3  Reading physiological signatures in electromyograms WAKELING, James M; Simon Fraser University, Canada wakeling@sfu.ca Myoelectric signals are interference patterns containing information from the active motor units. Each motor unit action potential (MUAP) has a characteristic shape and conduction velocity and occurs at a defined time. These features are encoded by the time-frequency […]

Meeting Abstract LBS1.1  Thursday, Jan. 3  Pros and cons of electromyography in an integrative experimental context KONOW, Nicolai*; SANFORD, Christopher/PJ; Hofstra University nicolai.konow@hofstra.edu Synchronising measurements of muscle activity and strain-generation, with external and internal kinematics may yield unparalleled insights into musculoskeletal function. In the case of serially-arranged, synergistic/antagonistic muscle-arrays, integrated approaches have distinct advantages over stand-alone EMG, […]

Meeting Abstract LBS1.7  Thursday, Jan. 3  Interpreting muscle function from EMG: lessons learned from direct measurements of muscle force. ROBERTS, Thomas; Brown University roberts@brown.edu Electromyographs are often used to infer the pattern of skeletal muscle force production. However, in vitro studies of muscle contractile behavior show that for a given muscle activation, both the timing and magnitude […]

Meeting Abstract LBS1.2  Thursday, Jan. 3  Electromyography and the evolution of motor control: insights and limitations. HERREL, A*; AERTS, P; Univ. Antwerp; Univ. Antwerp anthony.herrel@ua.ac.be Electromyography, or the study of muscle activation patterns, has long been used to infer higher level control and the evolution thereof. As the activation of the muscles at the level of the […]

Meeting Abstract LBS1.5  Thursday, Jan. 3  EMG during Primate Chewing: Patterns and Prospects for Studying Masticatory Function and Evolution VINYARD, C.J.*; WALL, C.E.; NEOUCOM; Duke University cvinyard@neoucom.edu Mammalian chewing poses major challenges to describing muscle function. In contrast to a locomotor sequence, mammals destroy the substrate (ie, food) as a chewing sequence progresses. The complexity induced by […]

Meeting Abstract LBS1.3  Thursday, Jan. 3  Asynchrony in paired muscle motor activity GERRY, S.P.**; RAMSAY, J.B.; WILGA, C.D.; University of Rhode Island; University of Rhode Island; University of Rhode Island sgerry@mail.uri.edu Many studies of feeding behavior have implanted electrodes unilaterally to determine the basic motor patterns of jaw muscles. However, bilateral implantation has the potential to achieve […]