Tactile-Based Pantomime Grasping: Knowledge of Results is Not Enough to Support an Absolute Calibration.

Tactile-based pantomime-grasping requires that a performer use their right hand to 'grasp' a target previously held in the palm of their opposite hand - a task examining how mechanoreceptive (i.e., tactile) feedback informs the motor system about an object property (i.

Effects of A 60 Hz Magnetic Field of Up to 50 milliTesla on Human Tremor and EEG: A Pilot Study.

Humans are surrounded by sources of daily exposure to power-frequency (60 Hz in North America) magnetic fields (MFs). Such time-varying MFs induce electric fields and currents in living structures which possibly lead to biological effects. The present pilot study examined possible extremely low frequency (ELF) MF effects on human neuromotor control in general, and physiological postural tremor and electroencephalography (EEG) in particular.

Vision for action and perception elicit dissociable adherence to Weber's law across a range of 'graspable' target objects.

A number of studies have reported that grasps and manual estimations of differently sized target objects (e.g., 20 through 70 mm) violate and adhere to Weber's law, respectively (e.

The spatial relations between stimulus and response determine an absolute visuo-haptic calibration in pantomime-grasping.

Pantomime-grasps entail a response to an area adjacent to (i.e., spatially dissociated pantomime-grasp), or previously occupied by (i.

Biomechanical constraints do not influence pantomime-grasping adherence to Weber's law: A reply to Utz et al. (2015).

Work by our group and others employed the within-participants variability in peak grip aperture as a 'just-noticeable-difference' (JND) in grasping. Notably, our group reported that grasping responses with decoupled spatial relations between stimulus and response (i.e.

Pantomime-Grasping: Advance Knowledge of Haptic Feedback Availability Supports an Absolute Visuo-Haptic Calibration.

An emerging issue in movement neurosciences is whether haptic feedback influences the nature of the information supporting a simulated grasping response (i.e., pantomime-grasping).

Grasping a 2D object: terminal haptic feedback supports an absolute visuo-haptic calibration.

Grasping a three-dimensional (3D) object results in the specification of motor output via absolute size information. In contrast, the impoverished visual cues (e.g.

Pantomime-grasping: the 'return' of haptic feedback supports the absolute specification of object size.

When an individual grasps a physical object, the visuomotor system is able to specify grip aperture via absolute visual information. In contrast, grasping to a location previously occupied by an object (i.e.

Memory delay and haptic feedback influence the dissociation of tactile cues for perception and action.

The somatosensory processing model (SPM) asserts that dissociable cortical processing streams mediate tactile perceptions and actions via relative and absolute cues, respectively (Dijkerman and de Haan, 2007). Accordingly, we sought to determine whether the introduction of a memory delay and/or physically touching a target object (i.e.

Weber's law in tactile grasping and manual estimation: feedback-dependent evidence for functionally distinct processing streams.

The goal of the present investigation was to test the somatosensory processing model's (SPM) assertion that tactile actions and perceptions are mediated via egocentric and allocentric frames of reference, respectively (Dijkerman & de Hann's 2007: Behavioral and Brain Sciences). To accomplish that objective, Experiment 1 required that participants use their right hand to grasp and manually estimate differently sized objects placed on the forearm and palm of their left hand. Following each manual estimation trial, participants grasped the target object to equate tasks (i.