TiB-reinforced Ti–3Al–2.5V, in which the TiB whiskers are oriented parallel to direction of heat extrusion, was fabricated via powder metallurgy. To investigate effects whisker volume fraction on fatigue properties four-point bending tests were conducted plate-type specimens having varying and orientation. The limit life Ti–3Al–2.5V that loading tended be increase with increasing fraction, wher...

The present study examined the human ability to learn a new sensory modality, specifically “whisking”. An experimental apparatus containing artificial whiskers, force sensors, position sensors and computer interface was developed. Twelve participants took part in an experiment containing three tasks: pole localization in the radial dimension, roughness estimation, and object recognition. All ta...

Damage or deprivation of a localized region of the skin surface has been shown to induce a selective expansion of adjacent skin surface representations in the adult somatosensory cortex. Here, we use repeated optical imaging in conjunction with single unit recordings to assess the plasticity of a single whisker's functional representation in the adult rat. We observed a large-scale expansion of...

‎recently‎, ‎some techniques such as adding whiskers and attaching graphs to vertices of a given graph‎, ‎have been proposed for constructing a new vertex decomposable graph‎. ‎in this paper‎, ‎we present a new method for constructing vertex decomposable graphs‎. ‎then we use this construction to generalize the result due to cook and nagel‎.

The present study shows that in the whisker-to-barrel pathway of adult mice surgical removal of three whisker follicles leads to the expansion of the functional cortical representation of the whiskers adjacent to the lesion into the deprived barrels within 8 months. Concomitant with this enlargement, there is an increase in follicular innervation of the corresponding whiskers. This reorganizati...

Touch is an active process, but how do the body's somatic sensors influence its movement? In this issue of Neuron, Nguyen and Kleinfeld show that afferent activity from the whiskers on a rat's face trigger rapid and prolonged excitation of the motor neurons that drive movements of the same whiskers. Positive feedback through this sensorimotor loop may serve to optimize the interaction between s...