Results 1 - 10 of 4,002

Hands Up: Attentional Prioritization of Space Near the Hand

by Catherine L. Reed, Jefferson D. Grubb, Cleophus Steele, Catherine L. Reed, Jefferson D. Grubb, Cleophus Steele, We Thank Elizabetta Ládavas, Ro Farné, Rob Roberts
"... This study explored whether hand location affected spatial attention. The authors used a visual covertorienting paradigm to examine whether spatial attention mechanisms—location prioritization and shifting attention—were supported by bimodal, hand-centered representations of space. Placing 1 hand ne ..."
Abstract - Cited by 14 (1 self) - Add to MetaCart
This study explored whether hand location affected spatial attention. The authors used a visual covertorienting paradigm to examine whether spatial attention mechanisms—location prioritization and shifting attention—were supported by bimodal, hand-centered representations of space. Placing 1 hand

R-trees: A Dynamic Index Structure for Spatial Searching

by Antonin Guttman - INTERNATIONAL CONFERENCE ON MANAGEMENT OF DATA , 1984
"... In order to handle spatial data efficiently, as required in computer aided design and geo-data applications, a database system needs an index mechanism that will help it retrieve data items quickly according to their spatial locations However, traditional indexing methods are not well suited to data ..."
Abstract - Cited by 2750 (0 self) - Add to MetaCart
In order to handle spatial data efficiently, as required in computer aided design and geo-data applications, a database system needs an index mechanism that will help it retrieve data items quickly according to their spatial locations However, traditional indexing methods are not well suited

Tracking multiple independent targets: Evidence for a parallel tracking mechanism

by Zenon W. Pylyshyn, Ron W. Storm - Spatial Vision , 1988
"... Abstract-There is considerable evidence that visual attention is concentrated at a single locus in the visual field, and that this locus can be moved independent of eye movements. Two studies are reported which suggest that, while certain aspects of attention require that locations\be scanned serial ..."
Abstract - Cited by 393 (23 self) - Add to MetaCart
Abstract-There is considerable evidence that visual attention is concentrated at a single locus in the visual field, and that this locus can be moved independent of eye movements. Two studies are reported which suggest that, while certain aspects of attention require that locations\be scanned

Storage and executive processes in the frontal lobes.

by Edward E Smith , John Jonides - Science, , 1999
"... The human frontal cortex helps mediate working memory, a system that is used for temporary storage and manipulation of information and that is involved in many higher cognitive functions. Working memory includes two components: short-term storage (on the order of seconds) and executive processes th ..."
Abstract - Cited by 401 (5 self) - Add to MetaCart
-hemisphere supplementary and premotor areas; storage of spatial information activates the right-hemisphere premotor cortex; and storage of object information activates other areas of the prefrontal cortex. Two of the fundamental executive processes are selective attention and task management. Both processes activate

A survey of peer-to-peer content distribution technologies

by Stephanos Androutsellis-theotokis, Diomidis Spinellis - ACM Computing Surveys , 2004
"... Distributed computer architectures labeled “peer-to-peer ” are designed for the sharing of computer resources (content, storage, CPU cycles) by direct exchange, rather than requiring the intermediation or support of a centralized server or authority. Peer-to-peer architectures are characterized by t ..."
Abstract - Cited by 378 (7 self) - Add to MetaCart
and infrastructure technologies in terms of their distributed object location and routing mechanisms, their approach to content replication, caching and migration, their support for encryption, access control, authentication and identity, anonymity, deniability, accountability and reputation, and their use

Modeling Spatial Knowledge

by Benjamin Kuipers - Cognitive Science , 1978
"... A person's cognitive map, or knowledge of large-scale space, is built up from observations gathered as he travels through the environment. It acts as a problem solver to find routes and relative positions. as well as describing the current location. The TOUR model captures the multiple repr ..."
Abstract - Cited by 281 (25 self) - Add to MetaCart
A person's cognitive map, or knowledge of large-scale space, is built up from observations gathered as he travels through the environment. It acts as a problem solver to find routes and relative positions. as well as describing the current location. The TOUR model captures the multiple

Space and attention in parietal cortex.

by Carol L Colby , Michael E Goldberg - Annual Review of Neuroscience, , 1999
"... ABSTRACT The space around us is represented not once but many times in parietal cortex. These multiple representations encode locations and objects of interest in several egocentric reference frames. Stimulus representations are transformed from the coordinates of receptor surfaces, such as the ret ..."
Abstract - Cited by 226 (0 self) - Add to MetaCart
representation of space in environmental coordinates. In addition to representing object locations in motoric coordinates, parietal neurons exhibit strong modulation by attention. Both topdown and bottom-up mechanisms of attention contribute to the enhancement of visual responses. The saliance of a stimulus

The role of visual attention in saccadic eye movements

by James E. Hoffman, Baskaran Subramaniam - Perception & Psychophysics , 1995
"... The relationship between saccadic eye movements and covert orienting of visual spatial attention was investigated in two experiments. In the first experiment, subjects were required to make a saccade to a specified location while also detecting a visual target presented just prior to the eye movemen ..."
Abstract - Cited by 230 (1 self) - Add to MetaCart
The relationship between saccadic eye movements and covert orienting of visual spatial attention was investigated in two experiments. In the first experiment, subjects were required to make a saccade to a specified location while also detecting a visual target presented just prior to the eye

Gorillas in our midst: sustained inattentional blindness for dynamic events

by Daniel J Simons, Christopher F Chabris - PERCEPTION , 1999
"... With each eye fixation, we experience a richly detailed visual world. Yet recent work on visual integration and change detection reveals that we are surprisingly unaware of the details of our environment from one view to the next: we often do not detect large changes to objects and scenes ('ch ..."
Abstract - Cited by 304 (6 self) - Add to MetaCart
on the similarity of that object to other objects in the display and on how difficult the priming monitoring task is. Interestingly, spatial proximity of the critical unattended object to attended locations does not appear to affect detection, suggesting that observers attend to objects and events, not spatial

Dynamic Texture Recognition Using Local Binary Patterns with an Application to Facial Expressions

by Guoying Zhao, Matti Pietikäinen - IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE , 2007
"... Dynamic texture is an extension of texture to the temporal domain. Description and recognition of dynamic textures have attracted growing attention. In this paper, a novel approach for recognizing dynamic textures is proposed and its simplifications and extensions to facial image analysis are also ..."
Abstract - Cited by 291 (35 self) - Add to MetaCart
-occurrences on three orthogonal planes (LBP-TOP) are then considered. A block-based method is also proposed to deal with specific dynamic events, such as facial expressions, in which local information and its spatial locations should also be taken into account. In experiments with two dynamic texture databases, Dyn
Results 1 - 10 of 4,002