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Related Concept Videos

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The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
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Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
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In order to make good decisions, we use our knowledge and our reasoning. Often, this knowledge and reasoning is sound and solid. However, sometimes, we are swayed by biases or by others manipulating a situation. For example, let’s say you and three friends wanted to rent a house and had a combined target budget of $1,600. The realtor shows you only very run-down houses for $1,600 and then shows you a very nice house for $2,000. Might you ask each person to pay more in rent to get the...
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Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...
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The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
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Somatosensation01:33

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The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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Related Experiment Video

Updated: Feb 17, 2026

Evaluation of Hemisphere Lateralization with Bilateral Local Field Potential Recording in Secondary Motor Cortex of Mice
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Hemispheric Asymmetries in Price Estimation: Do Brain Hemispheres Attribute Different Monetary Values?

Felice Giuliani1, Anita D'Anselmo2, Luca Tommasi2

  • 1Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi "G. d'Annunzio" Chieti - Pescara, Chieti, Italy.

Frontiers in Psychology
|December 8, 2017
PubMed
Summary

The Spatial Numerical Association of Response Codes (SNARC) effect links numbers to space. Price estimation shows unique brain asymmetries, with lower prices perceived in the left visual field, suggesting valence attribution biases.

Keywords:
hemispheric asymmetriesprice estimationvalence hypothesisvisual half-field stimulationweight estimation

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Measuring the Subjective Value of Risky and Ambiguous Options using Experimental Economics and Functional MRI Methods
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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Decision Making

Background:

  • The Spatial Numerical Association of Response Codes (SNARC) effect demonstrates an implicit link between numerical magnitude and spatial representation.
  • This effect typically maps smaller numbers to the left and larger numbers to the right.
  • Price judgments, however, may involve additional factors like perceived quality and valence attribution, potentially influenced by brain asymmetries.

Purpose of the Study:

  • To investigate hemispheric differences in price estimation compared to weight estimation.
  • To determine if valence attribution biases, driven by brain asymmetries, influence price perception.
  • To explore the role of non-numerical mechanisms in price magnitude judgments.

Main Methods:

  • Utilized a lateralized tachistoscopic presentation paradigm.
  • Employed a price estimation task and a weight estimation task as a control.
  • Assessed visual field biases in magnitude judgments.

Main Results:

  • A significant side bias was observed in the price estimation task, but not in the weight estimation task.
  • Prices were perceived as lower when presented in the left visual field compared to the right visual field.
  • This suggests that price estimation involves mechanisms beyond simple numerical magnitude processing.

Conclusions:

  • Price estimation is influenced by valence attribution biases linked to brain asymmetries, unlike weight estimation.
  • Left-hemisphere processing may be associated with higher perceived quality (higher prices), while right-hemisphere processing may relate to lower perceived quality (lower prices).
  • These findings highlight the complex interplay of numerical, spatial, and affective factors in economic decision-making.