We review research on somatosensory (tactile) processing of the tongue based on data obtained using non-invasive neurophysiological and neuroimaging methods. Technical difficulties in stimulating the tongue, due to the noise elicited by the stimulator, the fixation of the stimulator, and the vomiting reflex, have necessitated the development of specialized devices. In this article, we show the ...

The present investigation was designed to determine the organization of somatosensory fields in the lateral sulcus of macaque monkeys using standard microelectrode recording techniques. Our results provide evidence for two complete representations of the body surface. We term these fields the second somatosensory area (SII) and the parietal ventral area (PV) because of their similarities in pos...

The second moment of the heavy quark vector correlator at O(α3 s) is presented. The implications of this result on recent determinations of the charm and bottom quark mass are discussed.

Children’s ability to direct attention to salient stimuli is a key aspect of cognitive functioning. Here we examined the magnitude and lateralization of EEG indices during somatosensory anticipation elicited by a left or right directional cue indicating the bodily location of an upcoming tactile stimulus. In 50 children aged 6-8 years, somatosensory anticipation was accompanied by anticipatory ...

In addition to a primary somatosensory cortex (SI), the cerebral cortex of all mammals contains a second somatosensory area (SII); however, the functions of SII are largely unknown. Our aim was to explore the functions of SII by comparing response properties of whisker-related neurons in this area with their counterparts in the SI. We obtained extracellular unit recordings from narcotized rats,...

The location of the human nociceptive area(s) near the Sylvian fissure is still controversial in spite of evidence from imaging and evoked potential studies that noxious heat stimuli activate somatosensory areas in that region. Some studies have suggested the secondary somatosensory cortex (SII) on the upper bank of the Sylvian fissure posterior to the central sulcus, others the anterior insula...

In adult mice of the C57BL/6J strain the projection of the visual field was systematically mapped under direct vision. As in other vertebrate species the nasal (anterior) field projected anterolaterally, and the inferior field posterolaterally. Values of magnification-1 (m-1, or degrees of visual field per millimeter tectal surface) were calculated over most of the tectum, for measurements in t...

Compared with our growing understanding of the organization of somatosensory cortex in monkeys, little is known about prosimian primates, a major branch of primate evolution that diverged from anthropoid primates some 60 million years ago. Here we describe extensive results obtained from an African prosimian, Galago garnetti. Microelectrodes were used to record from large numbers of cortical si...

We previously examined the cortical processing in response to somatosensory, auditory and noxious stimuli, using magnetoencephalography in humans. Here, we performed a similar analysis of the processing in the human visual cortex for comparative purposes. After flash stimuli applied to the right eye, activations were found in eight cortical areas: the left medial occipital area around the calca...

Title: Representation of tactile curvature in macaque somatosensory area 2 1 Authors: Jeffrey M. Yau, Charles E. Connor, & Steven S. Hsiao 2 Addresses: Zanvyl Krieger Mind/Brain Institute and Solomon H. Snyder Department of 3 Neuroscience, Johns Hopkins University, 3400 N Charles St, Baltimore, Maryland 4 21218, USA. Present address: Department of Neurology, Division of Cognitive 5 Neuroscience...