13 papers · ranked by Valyu relevance
Franklin Leong, Babak Rahmani, Demetri Psaltis, Christophe Moser + 1 more
A fundamental challenge in neuroengineering is determining a proper artificial input to a sensory system that yields the desired perception. In neuroprosthetics, this process is known as artificial sensory encoding, and it holds a crucial role in prosthetic devices restoring sensory perception in individuals with…
Tijl Grootswagers, Amanda K. Robinson, Sophia M. Shatek, Thomas A. Carlson + 1 more
'Thomas A. Carlson' 'Daniele Marinazzo'] The basic computations performed in the human early visual cortex are the foundation for visual perception. While we know a lot about these computations, a key missing piece is how the coding of visual features relates to our perception of the environment. To investigate visual…
Ye Chen, Peter Beech, Ziwei Yin, Shanshan Jia + 4 more
'Zhaofei Yu' 'Jian K. Liu' 'Daniele Marinazzo'] Understanding the computational mechanisms that underlie the encoding and decoding of environmental stimuli is a crucial investigation in neuroscience. Central to this pursuit is the exploration of how the brain represents visual information across its hierarchical…
Serena Castellotti, Giacomo Mazzotta, Alessandro Benedetto, Maria Michela Del Viva
'Maria Michela Del Viva'] The human visual system processes a massive amount of visual information very rapidly, requiring efficient coding mechanisms to handle such data within physiological constraints. The biological foundations of these mechanisms remain poorly understood. One hypothesis suggests that the visual…
Joris Vincent, Marianne Maertens, Guillermo Aguilar
A key question in perception research is how stimulus variations translate into perceptual magnitudes, that is, the perceptual encoding process. As experimenters, we cannot probe perceptual magnitudes directly, but infer the encoding process from responses obtained in a psychophysical experiment. The most prominent…
Xiwei She, Bryan J. Moore, Brent M. Roeder, George Nune + 14 more
The hippocampus is crucial for forming new episodic memories. While its role in encoding spatial and temporal information (where and when) is well understood, how it encodes objects (what) remains unclear due to the high dimensionality of object space. Rather than encoding each object separately, the hippocampus may…
Moshe Gur
In my Perspective (), I have argued that the visual system can rapidly and efficiently handle a vast amount of information by keeping a parallel, one-to-one, data transfer between the retina and the primary visual cortex (V1). High-resolution vision is enabled by using saccadic eye movements to direct the central…
Michele Rucci, Ehud Ahissar, David C. Burr, Igor Kagan + 2 more
To provide a more specific example of this general issue, consider the case of stimulus flashes. Gur argues that space-time encoding is “incompatible with our faithful perception of briefly displayed objects.” In his view, because substantial information can be extracted from a brief flash over a blank screen, ocular…
Lily E. Kramer, Yi-Chia Chen, Bria Long, Talia Konkle + 1 more
'Marlene R. Cohen'] The complexity of visual features for which neurons are tuned increases from early to late stages of the ventral visual stream. Thus, the standard hypothesis is that high-level functions like object categorization are primarily mediated by higher visual areas because they require more complex image…
Benjamin Peters, James J. DiCarlo, Todd Gureckis, Ralf Haefner + 9 more
Vision is widely understood as an inference problem. However, two contrasting conceptions of the inference process have each been influential in research on biological vision as well as the engineering of machine vision. The first emphasizes bottom-up signal flow, describing vision as a largely feedforward…
Joseph S. Lappin, Herbert H. Bell
Visual perception involves spatially and temporally coordinated variations in diverse physical systems: environmental surfaces and symbols, optical images, electro-chemical activity in neural networks, muscles, and bodily movements-each with a distinctly different material structure and energy. The fundamental problem…
Jesús Malo, Gholamreza Anbarjafari
Biological neural networks for color vision (also known as color appearance models) consist of a cascade of linear + nonlinear layers that modify the linear measurements at the retinal photo-receptors leading to an internal (nonlinear) representation of color that correlates with psychophysical experience. The basic…
Michael H. Herzog
What is fundamental in vision has been discussed for millennia. For philosophical realists and the physiological approach to vision, the objects of the outer world are truly given, and failures to perceive objects properly, such as in illusions, are just sporadic misperceptions. The goal is to replace the subjectivity…