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Visuospatial ability: Studies

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What and where pathways. What and where pathways refer to a proposed organization of the visual system based on neuroanatomical, electrophysiological, and lesion studies. It describes two information processing streams originating in the occipital cortex, dorsal (which goes to parietal cortex) and ventral (which goes to temporal cortex), which exhibit relative specialization in object recognition (what) and spatial vision (where). This entry will present the general ideas of the what-and-where proposal, with an emphasis on the organization of the what processing stream. Early studies of human patients pointed to the inferior temporal cortex as a site for object agnosia Figure 1: (Top) Region of the human brain (in shading) within which large bilateral or right-sided lesions cause associative visual agnosia.

The earliest clues about the neural bases of object perception and recognition came from the study of brain-damaged humans with visual agnosia. The human brain also has ventral and dorsal processing streams. Wege zur Klugheit: Wie Sie mit Öl und Stromschlägen Ihren IQ verbessern - Nachrichten Wissenschaft. Mühelos lernen, alles erinnern, immer fit sein – bislang haben Apotheker das Gehirn mit Pillen auf Vordermann gebracht. Aber es geht auch anders. Von Jörg Zittlau Es ist eine der befremdlichen Moden des Informationszeitalters: Mehr und mehr Menschen ist ihr eigener Kopf nicht schnell genug. Sie schlucken "Brain-Booster", wie etwa Ritalin, Modafinil oder sogar Betablocker zur Dämpfung von Prüfungsängsten – und nehmen große Gesundheitsgefahren in Kauf. Alle Mittel haben Nebenwirkungen. 1. Ein Weg dazu könnte über die Nase gehen. Was konkret bedeutet: Wenn Klogestank oder miefige Büroluft in die Nase kriecht, fällt das geistige Arbeiten schwerer als unter den Düften von Sandelholz oder Neroli.

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Visual-Spatial Working Memory

Neuropsychology Review, Volume 19, Number 1. Scene recognition following locomotion around a sc... [Perception. 2006] - PubMed result. Journal of Experimental Psychology: Learning, Memory, and Cognition. Search — Memory & Cognition. Ventral/dorsal pathways. Brain Research Reviews : Dorsal–ventral integration in object recognition. Abstract The idea of two parallel hierarchical pathways in vision has fueled a great deal of research and enhanced our understanding of visual processing in the brain. However, after 25 years, it has become clear that the earlier distinctions in terms of neuroanatomy and functional dissociation are less pure than originally considered. Dorsal visual areas may exhibit object-selective responses and many 3-D cues of shape, particularly structure-from-motion, appear to be computed exclusively by dorsal areas. These findings imply a more important role for dorsal visual areas in object recognition than previously considered and also place restrictions on the nature of ventral object representations.

These representations will need to include information about the objects in 3-D, making them more viewpoint-invariant. They will also need to be invariant to the 3-D cue used to describe them. Keywords Copyright © 2009 Elsevier B.V. 122 (application/pdf-Objekt)

Further Studies (25.12.2010)

What and where pathways. What and where pathways refer to a proposed organization of the visual system based on neuroanatomical, electrophysiological, and lesion studies. It describes two information processing streams originating in the occipital cortex, dorsal (which goes to parietal cortex) and ventral (which goes to temporal cortex), which exhibit relative specialization in object recognition (what) and spatial vision (where). This entry will present the general ideas of the what-and-where proposal, with an emphasis on the organization of the what processing stream.

Early studies of human patients pointed to the inferior temporal cortex as a site for object agnosia Figure 1: (Top) Region of the human brain (in shading) within which large bilateral or right-sided lesions cause associative visual agnosia. The earliest clues about the neural bases of object perception and recognition came from the study of brain-damaged humans with visual agnosia. The human brain also has ventral and dorsal processing streams. The search engine for life-science PDFs.

Event-related potential measures of visual working... [Clin EEG Neurosci. 2006] - PubMed result. Spatial congruence in working memory: an ERP study. [Neuroreport. 2004] - PubMed result. Working memory and preparation elicit different pa... [Psychophysiology. 1995] - PubMed result. Slow cortical potentials during retention of objec... [Brain Res Cogn Brain Res. 2001] - PubMed result. Interactions between attention and working memory. [Neuroscience. 2006] - PubMed result.

Double dissociations in visual and spatial short-t... [J Exp Psychol Gen. 2004] - PubMed result. Evidence for modality-independent order coding in ... [Q J Exp Psychol (Colchester). 2009] - PubMed result. Processing of multisensory spatial congruency can ... [Eur J Neurosci. 2007] - PubMed result. Executive processes in visual and spatial working ... [Q J Exp Psychol (Colchester). 2007] - PubMed result.

Moving to higher ground: The dynamic field theory ... [New Ideas Psychol. 2008] - PubMed result. The attentional blink provides episodic distinctiv... [J Exp Psychol Hum Percept Perform. 2009] - PubMed result. Attention and working memory: a dynamical model of... [Eur J Neurosci. 2003] - PubMed result. A large-scale neurocomputational model of task-ori... [J Cogn Neurosci. 2006] - PubMed result. Information processes in the primate prefrontal co... [Rev Neurosci. 2002] - PubMed result.

Reliance on visual imagery and its relation to men... [Percept Mot Skills. 1997] - PubMed result. Individual differences in reported visual imagery ... [Br J Psychol. 1979] - PubMed result. fMRI reveals alteration of spatial working memory ... [J Int Neuropsychol Soc. 2005] - PubMed result. A putative model of multisensory object representa... [Brain Topogr. 2009] - PubMed result. How parallel is visual processing in the ventral p... [Trends Cogn Sci. 2004] - PubMed result.

Neural mechanisms of visual object priming: eviden... [Neuroimage. 2003] - PubMed result. Evidence for premotor cortex activity during dynam... [Neuroimage. 2001] - PubMed result. Neural representations of visual words and objects... [Brain Topogr. 2007] - PubMed result. Attentive Tracking Disrupts Feature Binding in Vis... [Vis cogn. 2009] - PubMed result.

Dual-task interference in visual working memory: a... [Atten Percept Psychophys. 2009] - PubMed result. Object-based attention and object working memory: ... [Prog Brain Res. 2001] - PubMed result. Differentiating between spatial and object-based w... [Int J Neurosci. 2006] - PubMed result. Exploring visual-spatial working memory: a critica... [Neuropsychol Rev. 2009] - PubMed result. Visual and spatial working memory are not that dis... [J Exp Psychol Learn Mem Cogn. 2009] - PubMed result. Individual differences in reported visual imagery ... [Percept Mot Skills. 1978] - PubMed result. Development of sex differences in spatial memory. [Percept Mot Skills. 1999] - PubMed result. Object-processing neural efficiency differentiates... [Neuroreport. 2008] - PubMed result. Visual-spatial working memory, attention, and scen... [Psychol Res. 1999] - PubMed result.

Spatial versus object visualizers: a new character... [Mem Cognit. 2005] - PubMed result.

Kozhevnikov Publications 1999 - present

News. Keynote talk by Maria Kozhevnikov at the IEEE Virtual Reality 2011 On March 21, Maria Kozhevnikov presented a keynote talk ”Bringing 3D Immersive Virtual Reality Technologies to Visual-Spatial Cognition Research” at the IEEE Virtual Reality 2011, Singapore. Maria Kozhevnikov’s lab launched the new combined VR-EEG system Research techniques for investigating visualization in immersive 3D virtual environments have made a new challenging step forward.

Our lab has launched a new system for integrating Virtual Reality and EEG technologies, in order to investigate the neural correlates of information processing in immersive versus non-immersive VR. This is the first system of its kind and presents many promising research opportunities. Invited talk by Maria Kozhevnikov at Decade of the Mind VI On October 18, Maria Kozhevnikov gave a talk ”Bringing Innovative 3D Technologies to Visual-Spatial Cognition research: Looking Towards the Next Decade” at the 2010 Decade of the Mind VI, Singapore. Imagery Lab « Mental Imagery and Human-Computer Interaction Lab. Our lab is seeking two postdoctoral researchers for a project related to investigation of brain correlates of immersive 3D virtual environments. The main objective of this project is to develop interactive virtual reality simulations for cognitive neuroscience experiments using authoring software packages such as Vizard 3.0 (Virtual Reality toolkit), and investigate, using EEG technology, the differences between brain responses to 2D traditional versus 3D immersive displays.

For the first postdoctoral position we are looking for a person holding PhD in cognitive neuroscience or related discipline with background in EEG and ERP methodology, including running experiments and analyzing the data. Additional background in visual-spatial cognition is preferred. For the second postdoctoral position, the candidate should hold at least Master degree in computer science or related discipline, and have experience in object-oriented programming (e.g. Trade-off in object versus spatial visualization a... [Psychon Bull Rev. 2010] - PubMed result. Visual-object ability: a new dimension of non-verb... [Cognition. 2010] - PubMed result.

Imagery Study and quoted studies