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Visual System01:26

Visual System

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Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
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Visual Agnosia01:12

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Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Lewis Acids and Bases02:33

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In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
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Base Excision Repair01:54

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One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
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Weak Base Solutions03:21

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Some compounds produce hydroxide ions when dissolved by chemically reacting with water molecules. In all cases, these compounds react only partially and so are classified as weak bases. These types of compounds are also abundant in nature and important commodities in various technologies. For example, global production of the weak base ammonia is typically well over 100 metric tons annually, being widely used as an agricultural fertilizer, a raw material for chemical synthesis of other...
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The Immersive Cleveland Clinic Virtual Reality Shopping Platform for the Assessment of Instrumental Activities of Daily Living
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NeuroCave: A web-based immersive visualization platform for exploring connectome datasets.

Johnson J G Keiriz1, Liang Zhan2, Olusola Ajilore3

  • 1Department of Computer Science, University of Illinois at Chicago, Chicago, IL, USA.

Network Neuroscience (Cambridge, Mass.)
|October 9, 2018
PubMed
Summary
This summary is machine-generated.

NeuroCave is a new virtual reality system for visualizing brain connectome data. It allows researchers to explore complex brain networks interactively, aiding in the analysis of brain structure and function.

Keywords:
Connectome visualizationImmersive analyticsIntrinsic geometryNetwork analysis

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Area of Science:

  • Neuroscience
  • Computer Science
  • Data Visualization

Background:

  • The human connectome, representing brain connectivity, is often visualized as a complex network graph.
  • Analyzing these large-scale datasets requires advanced visualization tools to understand structural and functional relationships.

Purpose of the Study:

  • To introduce NeuroCave, an immersive visualization system for exploring human connectome datasets.
  • To provide neuroscientists with enhanced tools for network-theoretic analysis of brain connectivity.

Main Methods:

  • NeuroCave supports interaction in both standard desktop and virtual reality (VR) environments.
  • It enables manipulation in any coordinate system, on-demand module clustering, and synchronized 3D comparisons.
  • Edge bundling and interactive layouts mitigate visual clutter, with modular structures optimized using platonic solid geometry.

Main Results:

  • NeuroCave facilitates interactive visual inspection of structural and functional connectome data.
  • The system allows for simultaneous, synchronized manipulation and comparison across subjects or over time.
  • Novel functionalities support analysis tasks not available in existing visualization platforms.

Conclusions:

  • NeuroCave offers a powerful new platform for neuroscientists to analyze brain connectome data.
  • Its immersive and interactive features enhance the exploration of complex brain network characteristics.
  • The system improves upon existing visualization software by providing unique analytical capabilities.