Visual Perception

631.

Neural connections and receptive field properties in the primary visual cortex.

A cubic millimeter of primary visual cortex contains about 100,000 neurons that are heavily interconnected by intrinsic and extrinsic afferents. The effort of many neuroanatomists over the past has revealed the general outline of these connections; ...
Jose-Manuel Alonso (Neuroscientist, 200210)
neural-connections-receptive-field-properties-primary-visual-cortex.asp

632.

Just-noticeable differences in atmospheric haze.

This article examines the only available experimental data taken in the natural environment on the ability of an observer to perceive small, incremental changes in the colorfulness of objects seen through atmospheric haze and estimates an appropriate ...
Ronald C Henry (J Air Waste Manag Assoc, 200210)
noticeable-differences-atmospheric-haze.asp

633.

Cognitive mechanisms of nicotine on visual attention.

Understanding nicotines neurobiological and cognitive mechanisms may help explain both its addictive properties and potential therapeutic applications. As such, functional MRI was used to determine the neural substrates of nicotines effects on a ...
Natalia S Lawrence, Thomas J Ross, Elliot A Stein (Neuron, 200210)
cognitive-mechanisms-nicotine-visual-attention.asp

634.

Aiming at a far target under different viewing conditions: visual control in basketball jump shooting.

Most research on visual search in aiming at far targets assumes preprogrammed motor control implying that relevant visual information is detected prior to the final shooting or throwing movements. Eye movement data indirectly support this claim for ...
Raôul R D Oudejans, Rolf W van de Langenberg, R I Vana Hutter (Hum Mov Sci, 200210)
aiming-far-target-under-different-viewing-conditions-visual-control.asp

635.

Localizing visual discrimination processes in time and space.

Previous studies of visual processing in humans using event-related potentials (ERPs) have demonstrated that task-related modulations of an early component called the "N1" wave (140-200 ms) reflect the operation of a voluntary discrimination process. ...
Jens-Max Hopf, Edward Vogel, Geoffrey Woodman, Hans-Jochen Heinze, Steven J Luck (J Neurophysiol, 200210)
localizing-visual-discrimination-processes-time-space.asp

636.

A serial test of the laterality of familiar face recognition.

The purpose of the present study was to address the issue of laterality of familiar face recognition. Seventy-two participants judged familiar faces presented laterally or centrally for their "faceness," familiarity, occupation, and name (which represent ...
Michal Kampf, Israel Nachson, Harvey Babkoff (Brain Cogn, 200210)
serial-test-laterality-familiar-face-recognition.asp

637.

Preserved visual function in a case of occipitoparietal microgyria.

A 20-year-old man with bilateral parasagittal occipitoparietal polymicrogyria and epilepsy, from whom normal functional magnetic resonance imaging and electroencephalogram responses to visual stimuli were obtained, was found to have no visual perceptual ...
Pascal Zesiger, Daniel Kiper, Philippe Maeder, Thierry Deonna, Giorgio M Innocenti (Ann Neurol, 200210)
preserved-visual-function-case-occipitoparietal-microgyria.asp

638.

Visuovestibular perception of self-motion modeled as a dynamic optimization process.

This article describes a computational model for the sensory perception of self-motion, considered as a compromise between sensory information and physical coherence constraints. This compromise is realized by a dynamic optimization process minimizing a ...
Gilles Reymond, Jacques Droulez, Andras Kemeny (Biol Cybern, 200210)
visuovestibular-perception-self-motion-modeled-dynamic-optimization.asp

639.

Multisensory fusion and the stochastic structure of postural sway.

We analyze the stochastic structure of postural sway and demonstrate that this structure imposes important constraints on models of postural control. Linear stochastic models of various orders were fit to the center-of-mass trajectories of subjects ...
Tim Kiemel, Kelvin S Oie, John J Jeka (Biol Cybern, 200210)
multisensory-fusion-stochastic-structure-postural-sway.asp

640.

Objects are individuals but stuff doesnt count: perceived rigidity and cohesiveness influence infants representations of small groups of discrete entities.

Young infants construct models of the world composed of objects tracked through time and occlusion. To date little is known about the degree to which these models are sensitive to the material make-up of the represented individuals. Two experiments ...
Gavin Huntley-Fenner, Susan Carey, Andrea Solimando (Cognition, 200210)
objects-individuals-stuff-doesn-t-count-perceived-rigidity.asp