CALL FOR PAPERS Neurophysiology of Tactile Perception: A Tribute to Steven Hsiao Neuronal activity in somatosensory cortex related to tactile exploration

نویسندگان

  • Pascal Fortier-Poisson
  • Allan M. Smith
چکیده

Fortier-Poisson P, Smith AM. Neuronal activity in somatosensory cortex related to tactile exploration. J Neurophysiol 115: 112–126, 2016. First published October 14, 2015; doi:10.1152/jn.00747.2014.—The very light contact forces ( 0.60 N) applied by the fingertips during tactile exploration reveal a clearly optimized sensorimotor strategy. To investigate the cortical mechanisms involved with this behavior, we recorded 230 neurons in the somatosensory cortex (S1), as two monkeys scanned different surfaces with the fingertips in search of a tactile target without visual feedback. During the exploration, the monkeys, like humans, carefully controlled the finger forces. Highfriction surfaces offering greater tangential shear force resistance to the skin were associated with decreased normal contact forces. The activity of one group of neurons was modulated with either the normal or tangential force, with little or no influence from the orthogonal force component. A second group responded to kinetic friction or the ratio of tangential to normal forces rather than responding to a specific parameter, such as force magnitude or direction. A third group of S1 neurons appeared to respond to particular vectors of normal and tangential force on the skin. Although 45 neurons correlated with scanning speed, 32 were also modulated by finger forces, suggesting that forces on the finger should be considered as the primary parameter encoding the skin compliance and that finger speed is a secondary parameter that co-varies with finger forces. Neurons (102) were also tested with different textures, and the activity of 62 of these increased or decreased in relation to the surface friction.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Review CALL FOR PAPERS Neurophysiology of Tactile Perception: A Tribute to Steven Hsiao The vision of Hsiao on somatosensation

Flanders M, Soechting JF. The vision of Hsiao on somatosensation. J Neurophysiol 113: 684 – 687, 2015. First published November 12, 2014; doi:10.1152/jn.00670.2014.—The goal of this review is to start to consolidate and distill the substantial body of research that comprises the published work of the late Professor Steven S. Hsiao. The studies of Hsiao began by demonstrating the receptive field...

متن کامل

Review CALL FOR PAPERS Neurophysiology of Tactile Perception: A Tribute to Steven Hsiao Feeling form: the neural basis of haptic shape perception

Yau JM, Kim SS, Thakur PH, Bensmaia SJ. Feeling form: the neural basis of haptic shape perception. J Neurophysiol 115: 631–642, 2016. First published November 18, 2015; doi:10.1152/jn.00598.2015.—The tactile perception of the shape of objects critically guides our ability to interact with them. In this review, we describe how shape information is processed as it ascends the somatosensory neurax...

متن کامل

CALL FOR PAPERS Neurophysiology of Tactile Perception: A Tribute to Steven Hsiao Vision is superior to touch in shape perception even with equivalent peripheral input

Yoonju Cho, J. C. Craig, S. S. Hsiao, and S. J. Bensmaia Krieger Mind/Brain Institute, Johns Hopkins University, Baltimore, Maryland; Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland; Department of Neuroscience, Johns Hopkins University, Baltimore, Maryland; Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana; and Departmen...

متن کامل

CALL FOR PAPERS Neurophysiology of Tactile Perception: A Tribute to Steven Hsiao The speed of object recognition from a haptic glance: event-related potential evidence

Ane Gurtubay-Antolin, Borja Rodriguez-Herreros, and Antoni Rodríguez-Fornells Cognition and Brain Plasticity Group, Bellvitge Biomedical Research Institute (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain; Department of Basic Psychology, Campus Bellvitge, University of Barcelona, L’Hospitalet de Llobregat, Barcelona, Spain; and Catalan Institution for Research and Advanced Studies, Barcel...

متن کامل

Prefrontal Cortex and Somatosensory Cortex in Tactile Crossmodal Association: An Independent Component Analysis of ERP Recordings

Our previous studies on scalp-recorded event-related potentials (ERPs) showed that somatosensory N140 evoked by a tactile vibration in working memory tasks was enhanced when human subjects expected a coming visual stimulus that had been paired with the tactile stimulus. The results suggested that such enhancement represented the cortical activities involved in tactile-visual crossmodal associat...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015