Humans build representations of objects and their locations by integrating imperfect information from multiple perceptual modalities (e.g., visual, haptic). Since sensory information is specified in different frames of reference (i.e. eyeand body-centered), it must be remapped into a common coordinate frame before integration and storage in memory. Such transformations require an understanding ...

2 Previous studies suggest that stimulation of lateral intraparietal cortex (LIP) evokes saccadic eye movements towards eye-fixed or head-fixed goals, whereas most single-unit studies suggest that LIP uses an eye-fixed frame with eye position modulations. The goal of our study was to determine the reference frame for gaze shifts evoked during LIP stimulation in head-unrestrained monkeys. Two ma...

It is known that the brain uses multiple reference frames to code spatial information, including eye-centered and body-centered frames. When we move our body in space, these internal representations are no longer in register with external space, unless they are actively updated. Whether the brain updates multiple spatial representations in parallel, or whether it restricts its updating mechanis...

Humans build representations of objects and their locations by integrating imperfect information from multiple perceptual modalities (e.g., visual, haptic). Because sensory information is specified in different frames of reference (i.e., eye- and body-centered), it must be remapped into a common coordinate frame before integration and storage in memory. Such transformations require an understan...

The SNARC effect refers to faster reaction times for larger numbers with right-sided responses and for smaller numbers with left-sided responses, even when numerical magnitude is irrelevant. Although the SNARC is generally thought to reflect a mapping between numbers and space, the question of which spatial reference frame(s) are critical for the effect has not been systematically explored. We ...

We prove a theorem that gives an easily verifiable necessary and sufficient condition for a reference frame with fixed spacelike coordinates to be nonrotating in the sense of Walker. Applications are discussed.

Vision, like physics, requires a reference frame within which the position and motion of an object can be defined (Tadin et al., 2002). The brain initially receives information in retinocentric coordinates but successive neural computations can develop and integrate such information so as to transform the nature of the visual reference frame into another representation (e.g., head-centred, body...

There is concurrent evidence that visual reach targets are represented with respect to gaze. For tactile reach targets, we previously showed that an effector movement leads to a shift from a gaze-independent to a gaze-dependent reference frame. Here we aimed to unravel the influence of effector movement (gaze shift) on the reference frame of tactile stimuli using a spatial localization task (ye...

Abstract We present an immersed boundary projection method for flow-structure interaction problems involving rigid bodies with complex geometries. Dynamics of a body interacting fluid flow and kinematics other undergoing prescribed motions are coupled implicitly the incompressible vorticity equations. In particular, is formulated in frame reference fixed on under (the target) so that system can...