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Related Concept Videos

Leveling Effect01:29

Leveling Effect

In acid-base chemistry, the leveling effect refers to the limitation imposed by the solvent on the strength of acids and bases in solution. When a base stronger than the solvent's conjugate base is used, it deprotonates the solvent until the base is entirely consumed, making it ineffective against weaker acids. Conversely, an acid stronger than the solvent's conjugate acid protonates the solvent until the acid is depleted, rendering it ineffective against weaker bases. Essentially, the solvent...
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Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
Effects of Creep01:25

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Creep in concrete, the gradual deformation under prolonged stress, significantly impacts the integrity of structures. For reinforced concrete beams, it can be a vital design consideration, as it increases deflection, sometimes necessitating additional design measures. In columns, especially slender ones under eccentric loads, creep can cause buckling, compromising their stability. However, creep can be beneficial in indeterminate structures by mitigating stresses that arise from shrinkage,...
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

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Local Anesthetics: Adverse Effects01:12

Local Anesthetics: Adverse Effects

While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
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Leveling Effect and Non-Aqueous Acid-Base Solutions02:11

Leveling Effect and Non-Aqueous Acid-Base Solutions

This lesson defines the leveling effect in acidic and basic solutions and its role in aqueous and non-aqueous solutions. It is essential to understand the competing nature of various species in a chemical system.
The Leveling Effect of a Solvent
A generic acid (HA) reacts with the generic base (B-) to yield the corresponding conjugate base (A-) and conjugate acid (HB):

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Localizing Protein in 3D Neural Stem Cell Culture: a Hybrid Visualization Methodology
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Published on: December 19, 2010

High-level aftereffects to global scene properties.

Michelle R Greene1, Aude Oliva

  • 1Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. mrgreene@mit.edu

Journal of Experimental Psychology. Human Perception and Performance
|August 25, 2010
PubMed
Summary
This summary is machine-generated.

The human visual system adapts to scene properties, influencing scene categorization. Researchers found that adapting to global scene features causes aftereffects, impacting how we perceive and categorize scenes.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Computer Vision

Background:

  • Human visual system exhibits adaptation to recalibrate to input statistics.
  • Global scene properties like openness and depth aid scene categorization.
  • Rapid scene categorization relies on statistical regularities, making the visual system prone to adaptation.

Purpose of the Study:

  • Investigate adaptation to global scene properties.
  • Determine the role of global properties in scene categorization.
  • Explore the origin of visual aftereffects related to scene properties.

Main Methods:

  • Rapid serial visual presentation (RSVP) paradigm.
  • Measurement of aftereffects to global scene properties (8-21% magnitude).
  • Testing aftereffect preservation at displaced visual locations.

Main Results:

  • Significant aftereffects observed for global scene properties.
  • Aftereffects persisted when test images were spatially displaced.
  • Adaptation to global properties modulated basic-level scene categorization performance.

Conclusions:

  • Global scene properties play a representational role in rapid scene categorization.
  • Visual aftereffects to global scene properties are not solely due to low-level adaptation.
  • Adaptation mechanisms contribute to scene perception and categorization in the human visual system.