Space Perception

1.

Effects of head-slaved navigation and the use of teleports on spatial orientation in virtual environments.

The type of navigation interface in a virtual environment (VE)--head slaved or indirect--determines whether or not proprioceptive feedback stimuli are present during movement. In addition, teleports can be used, which do not provide continuous movement ...
Niels H Bakker, Peter O Passenier, Peter J Werkhoven (Hum Factors, 2003SPRING)
effects-head-slaved-navigation-teleports-spatial-orientation-virtual.asp

2.

Contribution of action to perception of self-orientation in humans.

In this study, we evaluated the effect of action on the perception of an egocentric illusion. Eighteen participants were asked to indicate the perceived morphological horizon under two backward body tilts from upright in the median plane (i.e. pitch) ...
Luc Tremblay, Digby Elliott (Neurosci Lett, 200310)
contribution-action-perception-self-orientation-humans.asp

3.

The effects of enhanced visual feedback on human synchronization.

The execution of actions not only reposes on the spatial and temporal organization of the movements as such but also on their appropriate imbedding into the environmental spatio-temporal constraints. Actually, performance outcome appears to be strongly ...
Tanja Ceux, Martinus J Buekers, Gilles Montagne (Neurosci Lett, 200310)
effects-enhanced-visual-feedback-human-synchronization.asp

4.

Spatial frequency processing in inferred PC- and MC-pathways.

The goal of this study was to investigate the role of inferred parvocellular (PC) and magnocellular (MC) pathways in spatial contrast sensitivity. Localized, spatially narrow-band patterns (sixth derivatives of Gaussians, D6s) were presented at various ...
Anna Leonova, Joel Pokorny, Vivianne C Smith (Vision Res, 200309)
spatial-frequency-processing-inferred-pc-mc-pathways.asp

5.

Time constants in the perception of a change in the direction of motion in humans.

Motion signals are subject to spatio-temporal filtering at early stages of processing. In general, motion can be characterized by two parameters: speed and direction. This study sought to determine the time constants for the filtering of the directional ...
John F Soechting, Leigh A Mrotek, Martha Flanders (Neurosci Lett, 200309)
time-constants-perception-change-direction-motion-humans.asp

6.

Timing of contextual modulation in the shine-through effect.

Contextual elements can fundamentally change the perception of an embedded target. A recently discovered masking effect, shine-through, allows one to investigate the precise dynamics of contextual modulation of the human visual system. In this ...
Michael H Herzog, Ulrike Schmonsees, Manfred Fahle (Vision Res, 200309)
timing-contextual-modulation-shine-effect.asp

7.

Spatio-temporal working-memory and short-term object-location tasks use different memory mechanisms.

Spatial short-term memory for objects locations was investigated in a spatial relocation task. During maintenance, dynamic visual noise or spatial tapping were administered as visual or spatial secondary tasks, respectively. Because memory for location ...
Hubert D Zimmer, Harry R Speiser, Beate Seidler (Acta Psychol (Amst), 200309)
spatio-temporal-working-memory-short-term-object-location-tasks.asp

8.

Motion parallax is computed in the updating of human spatial memory.

As we move through space, stationary objects around us show motion parallax: their directions relative to us change at different rates, depending on their distance. Does the brain incorporate parallax when it updates its stored representations of space? ...
W Pieter Medendorp, Douglas B Tweed, J Douglas Crawford (J Neurosci, 200309)
motion-parallax-computed-updating-human-spatial-memory.asp

9.

Visual-spatial ability in Parkinsons disease.

Parkinsons Disease (PD) has traditionally been viewed as primarily a disturbance of motor functioning, typically involving tremor, rigidity, hypokinesia, gait disturbance, and postural instability. More recently, decline in cognitive function has been ...
Gregory P Crucian, Michael S Okun (Front Biosci, 200309)
visual-spatial-ability-parkinson-s-disease.asp

10.

Visuospatial dysfunction in the neurodegenerative diseases.

Visuospatial dysfunction is not generally considered a cardinal feature of the common neurodegenerative disorders of late life like Alzheimers disease (AD), Parkinsons disease (PD), and Dementia with Lewy bodies (DLB). However, a large number of research ...
David S Geldmacher (Front Biosci, 200309)
visuospatial-dysfunction-neurodegenerative-diseases.asp