Academic literature on the topic 'Dorsal and ventral visual path¬ways'

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Journal articles on the topic "Dorsal and ventral visual path¬ways"

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Goodale, Melvyn A., and Jonathan S. Cant. "Coming to grips with vision and touch." Behavioral and Brain Sciences 30, no. 2 (2007): 209–10. http://dx.doi.org/10.1017/s0140525x07001483.

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AbstractDijkerman & de Haan (D&dH) propose a convincing model of somatosensory organization that is inspired by earlier perception-action models of the visual system. In this commentary, we suggest that the dorsal and ventral visual streams both contribute to the control of action, but in different ways. Using the example of grip and load force calibration, we show how the ventral stream can invoke stored information about the material properties of objects originally derived from the somatosensory system.
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Zeil, J., and M. Al-Mutairi. "The variation of resolution and of ommatidial dimensions in the compound eyes of the fiddler crab Uca lactea annulipes (Ocypodidae, Brachyura, Decapoda)." Journal of Experimental Biology 199, no. 7 (1996): 1569–77. http://dx.doi.org/10.1242/jeb.199.7.1569.

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We studied variations in the optical properties of the compound eyes of Uca lactea annulipes using in vivo optical and histological techniques. The distribution of resolving power in the eyes of this fiddler crab species is typical for arthropods that inhabit flat environments: the eyes possess a panoramic equatorial acute zone for vertical resolution and a steep decrease of resolution away from the eye equator in the dorsal and ventral visual fields. The dimensions of the cellular components of the ommatidia vary accordingly: in the equatorial part of the eyes, facets are larger, and crystall
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Lawton, Teri, John Shelley-Tremblay, Roland R. Lee, and Ming-Xiong Huang. "Retraining Dorsal Visual Pathways Improves Cognitive Skills After a Mild Traumatic Brain Injury." Journal of Clinical Medicine 14, no. 7 (2025): 2273. https://doi.org/10.3390/jcm14072273.

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Background and Objectives: Currently, there are no proven solutions to remediate cognitive deficits in people with a mild traumatic brain injury (mTBI). One common issue is visual timing deficits, which may be due to processing deficits in dorsal visual pathways. Methods: This study investigates whether a new intervention (PATH) aimed at improving these visual timing deficits is more effective than conventional cognitive therapies that either remediate: (1) pattern discrimination deficits (ventral visual pathway): Orientation Discrimination (OD), or (2) working memory deficits using ReCollect
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Valyear, Kenneth F., and Jody C. Culham. "Observing Learned Object-specific Functional Grasps Preferentially Activates the Ventral Stream." Journal of Cognitive Neuroscience 22, no. 5 (2010): 970–84. http://dx.doi.org/10.1162/jocn.2009.21256.

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In one popular account of the human visual system, two streams are distinguished, a ventral stream specialized for perception and a dorsal stream specialized for action. The skillful use of familiar tools, however, is likely to involve the cooperation of both streams. Using functional magnetic resonance imaging, we scanned individuals while they viewed short movies of familiar tools being grasped in ways that were either consistent or inconsistent with how tools are typically grasped during use. Typical-for-use actions were predicted to preferentially activate parietal areas important for tool
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Landgren, Eva, Kerstin Fritsches, Richard Brill, and Eric Warrant. "The visual ecology of a deep-sea fish, the escolar Lepidocybium flavobrunneum (Smith, 1843)." Philosophical Transactions of the Royal Society B: Biological Sciences 369, no. 1636 (2014): 20130039. http://dx.doi.org/10.1098/rstb.2013.0039.

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Escolar ( Lepidocybium flavobrunneum , family Gempylidae) are large and darkly coloured deep-sea predatory fish found in the cold depths (more than 200 m) during the day and in warm surface waters at night. They have large eyes and an overall low density of retinal ganglion cells that endow them with a very high optical sensitivity. Escolar have banked retinae comprising six to eight layers of rods to increase the optical path length for maximal absorption of the incoming light. Their retinae possess two main areae of higher ganglion cell density, one in the ventral retina viewing the dorsal w
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Taylor, Joanne S. H., Matthew H. Davis, and Kathleen Rastle. "Informing methods of reading instruction with cognitive psychology and cognitive neuroscience." Cognitive Psychology Bulletin 1, no. 4 (2019): 11. http://dx.doi.org/10.53841/bpscog.2019.1.4.11.

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Reading acquisition requires learning the associations between visual symbols and the sounds and meanings they represent. In alphabetic languages, the relationship between visual and spoken forms is relatively systematic, whereas the relationship between visual form and meaning is relatively arbitrary. Reading instruction that emphasises the relationship between spelling and sound (phonics) is therefore thought to be most effective, but opponents argue that this method does not improve reading comprehension. We simulated the process of reading acquisition by teaching adults to read artificial
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Campbell, Ruth. "The processing of audio-visual speech: empirical and neural bases." Philosophical Transactions of the Royal Society B: Biological Sciences 363, no. 1493 (2007): 1001–10. http://dx.doi.org/10.1098/rstb.2007.2155.

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In this selective review, I outline a number of ways in which seeing the talker affects auditory perception of speech, including, but not confined to, the McGurk effect. To date, studies suggest that all linguistic levels are susceptible to visual influence, and that two main modes of processing can be described: a complementary mode, whereby vision provides information more efficiently than hearing for some under-specified parts of the speech stream, and a correlated mode, whereby vision partially duplicates information about dynamic articulatory patterning. Cortical correlates of seen speech
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Mäki-Marttunen, Veronica, Thomas Hagen, Bruno Laeng, and Thomas Espeseth. "Distinct Neural Mechanisms Meet Challenges in Dynamic Visual Attention due to Either Load or Object Spacing." Journal of Cognitive Neuroscience 32, no. 1 (2020): 65–84. http://dx.doi.org/10.1162/jocn_a_01469.

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When engaged in dynamic visuospatial tasks, the brain copes with perceptual and cognitive processing challenges. During multiple-object tracking (MOT), the number of objects to be tracked (i.e., load) imposes attentional demands, but so does spatial interference from irrelevant objects (i.e., close encounters). Presently, it is not clear whether the effect of load on accuracy solely depends on the number of close encounters. If so, the same cognitive and physiological mechanisms deal with increasing load by preparing for and dealing with spatial interference. However, this has never been direc
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Li, Xiang, Jinyu Cong, Kunmeng Liu, Pingping Wang, Min Sun, and Benzheng Wei. "Aberrant intrinsic functional brain topology in methamphetamine-dependent individuals after six-months of abstinence." Mathematical Biosciences and Engineering 20, no. 11 (2023): 19565–83. http://dx.doi.org/10.3934/mbe.2023867.

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<abstract> <p>Our aim was to explore the aberrant intrinsic functional topology in methamphetamine-dependent individuals after six months of abstinence using resting-state functional magnetic imaging (rs-fMRI). Eleven methamphetamines (MA) abstainers who have abstained for six months and eleven healthy controls (HC) were recruited for rs-fMRI examination. The graph theory and functional connectivity (FC) analysis were employed to investigate the aberrant intrinsic functional brain topology between the two groups at multiple levels. Compared with the HC group, the characteristic sho
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VASILEVA, Neli. "DYNAMICS OF THE COMPELEX FORMS OF VISUAL PERCEPTION IN CHILDREN OF PRE-SCHOOL AGE (A NEUROPSYCHOLOGICAL ANALYSIS)." November 1, 2015. https://doi.org/10.1515/JSER-2015-0011.

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Book chapters on the topic "Dorsal and ventral visual path¬ways"

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McNaughton, Neil, and Jeffrey A. Gray. "What do hippocampal cell fields represent?" In The Neuropsychology of Anxiety, 3rd ed. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/oso/9780198843313.003.0007.

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Abstract ‘What do hippocampal cell fields represent?’ argues against the conventional idea of ‘place’ fields. Clear eyeblink, time, displace, and other ‘fields’ argue against place per se; as do the failures of the most obvious ‘place’ fields to map to space either externally or in the brain; with ‘remapping’ being inconsistent with any truly spatial metric. As with visual ‘fields’ cell firing is not a good guide to the information coded. Hippocampal cell firing is most easily understood as receipt of efference copies from the firing of distributed cell assemblies that code available goals; wi
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Summerfield, Christopher. "The structure of knowledge." In Natural General Intelligence. Oxford University PressOxford, 2022. http://dx.doi.org/10.1093/oso/9780192843883.003.0004.

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Abstract The chapter begins by considering the ways in which information is represented in memory, and how memories can be formed and represented in networks of neurons. It outlines the history of research into connectionist models, beginning with the perceptron. The chapter considers the success of neural networks, including deep convolutional neural networks, in explaining the representations in primate sensory systems. It discusses supervised and self-supervised approaches to concept learning. The chapter concludes by considering the relative roles of primate dorsal and ventral streams in v
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Coulthard, Elizabeth, and Masud Husain. "Psychology of attention." In New Oxford Textbook of Psychiatry. Oxford University Press, 2012. http://dx.doi.org/10.1093/med/9780199696758.003.0031.

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Attention is generally taken to be the process by which people are able to concentrate on certain information or processes, while ignoring other events. It appears to be a fundamental attribute of human brain processing, although difficult to pin down in terms of mechanism. Psychologists have attempted to fractionate attention in many different ways, using ingenious behavioural paradigms. In this section we, too, will consider different aspects of attention: selective, phasic and sustained, divided and executive control of attention. However, it would be fair to say that all these aspects of a
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