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Paradoxical Facilitation Of Object Recognition Memory After Infusion Of Scopolamine Into Perirhinal Cortex: Implications For Cholinergic System Function., Boyer D Winters, Lisa M Saksida, Timothy J Bussey
Paradoxical Facilitation Of Object Recognition Memory After Infusion Of Scopolamine Into Perirhinal Cortex: Implications For Cholinergic System Function., Boyer D Winters, Lisa M Saksida, Timothy J Bussey
Brain and Mind Institute Researchers' Publications
The cholinergic system has long been implicated in learning and memory, yet its specific function remains unclear. In the present study, we investigated the role of cortical acetylcholine in a rodent model of declarative memory by infusing the cholinergic muscarinic receptor antagonist scopolamine into the rat perirhinal cortex during different stages (encoding, storage/consolidation, and retrieval) of the spontaneous object recognition task. Presample infusions of scopolamine significantly impaired object recognition compared with performance of the same group of rats on saline trials; this result is consistent with previous reports supporting a role for perirhinal acetylcholine in object information acquisition. Scopolamine infusions …
Representation Of Head-Centric Flow In The Human Motion Complex., Jeroen Goossens, Sean P Dukelow, Ravi S Menon, Tutis Vilis, Albert V Van Den Berg
Representation Of Head-Centric Flow In The Human Motion Complex., Jeroen Goossens, Sean P Dukelow, Ravi S Menon, Tutis Vilis, Albert V Van Den Berg
Brain and Mind Institute Researchers' Publications
Recent neuroimaging studies have identified putative homologs of macaque middle temporal area (area MT) and medial superior temporal area (area MST) in humans. Little is known about the integration of visual and nonvisual signals in human motion areas compared with monkeys. Through extra-retinal signals, the brain can factor out the components of visual flow on the retina that are induced by eye-in-head and head-in-space rotations and achieve a representation of flow relative to the head (head-centric flow) or body (body-centric flow). Here, we used functional magnetic resonance imaging to test whether extra-retinal eye-movement signals modulate responses to visual flow in …
Visual Arts And Writing A Mutually Beneficial Relationship, Guy Trainin, Nancy Andrzejczak, Monique Poldberg
Visual Arts And Writing A Mutually Beneficial Relationship, Guy Trainin, Nancy Andrzejczak, Monique Poldberg
Research and Evaluation in Education, Technology, Art, and Design
This study focused on integrating art and literacy in elementary classrooms, grades 2-4, to benefit students’ writing, language, visual art production and art appreciation. The curriculum linked explicitly art making and writing. Implementation in year one with newly trained teachers impacted student achievement positively. Self created pictures drawn before writing enhanced the quality of writing by presenting a physical reality and complex texturing not available to students otherwise. Both writing quality and quantity grew as compared with controls and the school district as a whole. Student artistic observation also improved but still reflected a generally low level. Achievement gains transferred …
The Use Of A Visual Learning Design Representation To Document And Communicate Teaching Ideas, Shirley Agostinho
The Use Of A Visual Learning Design Representation To Document And Communicate Teaching Ideas, Shirley Agostinho
Faculty of Education - Papers (Archive)
A learning design is a representation of teaching and learning practice documented in some notational form so that it can serve as a model or template adaptable by a teacher to suit his/her context. This paper presents a work-in-progress of a research study that is examining how a learning design representation developed in an Australian federally funded project known as the Learning Designs project (www.learningdesigns.uow.edu.au) is being used. Eleven participants were interviewed to investigate how they are using the learning design representation and how such a representation could be improved. Preliminary findings indicate that the visual characteristic of this learning …
Human Visual Perception Of Region Warping Distortions, Yang-Wai Chow, Ronald Pose, Matthew Regan, James Phillips
Human Visual Perception Of Region Warping Distortions, Yang-Wai Chow, Ronald Pose, Matthew Regan, James Phillips
Faculty of Informatics - Papers (Archive)
Interactive virtual reality requires at least 60 frames per second in order to ensure smooth motion. For a good immersive experience, it is also necessary to have low end-to-end latency so that user interaction does not suffer from perceptible delays in images presented to the eyes. The Address Recalculation Pipeline (ARP) architecture reduces end-to-end latency in immersive Head Mounted Display (HMD) virtual reality systems. By using the ARP in conjunction with priority rendering, different sections of the scene are updated at different rates. This reduces the overall rendering load and allows for more complex and realistic scenes. Large object segmentation …
Visual Correlates Of Prosodic Contrastive Focus In French: Description And Inter-Speaker Variability, Marion Dohen, Helene Loevenbruck, Harold C. Hill
Visual Correlates Of Prosodic Contrastive Focus In French: Description And Inter-Speaker Variability, Marion Dohen, Helene Loevenbruck, Harold C. Hill
Faculty of Health and Behavioural Sciences - Papers (Archive)
This study is a follow-up of previous studies we conducted on the visible articulatory correlates of French prosodic contrastive focus. A two speaker analysis using an automatic lip-tracking device had shown that these correlates existed and were used in visual perception. However the articulatory strategies depended on the speaker. The purpose of this study was thus to extend the analysis to other speakers, examine the similarities and variabilities and try to identify global tendencies. We recorded five speakers of French with a 3D optical tracker using a 13 sentence (subject-verb-object) corpus and four focus conditions (S, V, O or neutral). …
Human Visual Perception Of Region Warping Distortions With Different Display And Scene Characteristics, Yang-Wai Chow, Ronald Pose, Matthew Regan, James Phillips
Human Visual Perception Of Region Warping Distortions With Different Display And Scene Characteristics, Yang-Wai Chow, Ronald Pose, Matthew Regan, James Phillips
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents human visual perception experiment results for a computer graphics rendering technique introduced in ACSC'05. In order to achieve a good immersive virtual reality experience, it is necessary to have at least 60 frames per second to ensure smooth motion. It is also necessary to have low end-to-end latency so that user interaction does not suffer from perceptible delays in images presented to the eyes. The Address Recalculation Pipeline (ARP) architecture reduces end-to-end latency in immersive Head Mounted Display (HMD) virtual reality systems. By using the ARP in conjunction with priority rendering, different sections of the scene are …
Is Pigmentation Important For Face Recognition? Evidence From Contrast Negation, Richard Russell, Pawan Sinha, Irving Biederman, Marissa Nederhouser
Is Pigmentation Important For Face Recognition? Evidence From Contrast Negation, Richard Russell, Pawan Sinha, Irving Biederman, Marissa Nederhouser
Psychology Faculty Publications
It is extraordinarily difficult to recognize a face in an image with negated contrast, as in a photographic negative. The variation among faces can be partitioned into two general sources: (a) shape and (b) surface reflectance, here termed 'pigmentation'. To determine whether negation differentially affects the processing of shape or pigmentation, we made two sets of faces where the individual faces differed only in shape in one set and only in pigmentation in the other. Surprisingly, matching performance was significantly impaired by contrast negation only when the faces varied in pigmentation. This provides evidence that the perception of pigmentation, not …