Detection thresholds for stimuli in humans and monkeys: comparison with threshold events in mechanoreceptive afferent nerve fibers innervating the monkey hand.

Some characteristics of tactile channels

“…1. Furthermore, the results are also in close agreement with the tuning curves of single Pacinian nerve fibers in monkey [18].…”

“…3. Adaptation-tuning curves of the NP I channel for two observers compared with the average neurophysiological tuning curves of RA fibers from humans adapted from Johansson, Landström, and Lundström [13] and monkey adapted from Mountcastle, LaMotte, and Carli [18]. Fig.…”

Equivalent comfort contours for vertical vibration of steering wheels: Effect of vibration magnitude, grip force, and hand position

“…FA I and FA II) and two are slow adapting (SA I and SA II) (Johansson and Vallbo, 1979). The Pacinian (P) channel has distinctive characteristics: spatial and temporal summation and a dependence on skin temperature (Gescheider et al, 1978), and is associated with the FA II fibres (Bolanowski and Verrillo, 1982;Mountcastle et al 1972). The non-Pacinian (NP) channels include the FA I, SA II and SA I fibres (i.e.…”

The Role of the Suprasprinal Center during Soleus Stretching Reflexes with Simultaneous Vibration

“…Vibration applied to peripheral leg muscles causes presynaptic inhibition of Ia and group II afferent fibers, and then stimulates the α-motoneurons of homonymous muscles via a decrease in interneuron numbers 16,17) . In contrast, vibration applied to the malleolus raises the activation thresholds of the ankle mechanoreceptors making it harder to stimulate the receptors because of the receptors' raised threshold 18) . Information on the level of the vibration frequency used in several studies was helpful for our research.…”