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Related Concept Videos

Thermosensation01:43

Thermosensation

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Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation
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Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation

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Altered interhemispheric resting state functional connectivity during passive hyperthermia.

Kai Liu1, Bo Li1, Shaowen Qian1

  • 1a Department of Medical Imaging , Jinan Military General Hospital , Shandong , China.

International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group
|November 27, 2015
PubMed
Summary
This summary is machine-generated.

Passive hyperthermia enhances brain connectivity in specific regions and impacts working memory performance. Heat stress affects interhemispheric interactions, potentially contributing to cognitive changes.

Keywords:
Passive hyperthermiafunctional MRIresting statevoxel-mirrored homotopic connectivityworking memory

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Area of Science:

  • Neuroscience
  • Human Physiology
  • Cognitive Science

Background:

  • Interhemispheric functional connectivity is crucial for cognitive processes.
  • The impact of passive hyperthermia on brain function requires further investigation.

Purpose of the Study:

  • To investigate the effects of passive hyperthermia on interhemispheric resting-state functional connectivity (rsFC).
  • To examine the correlation between rsFC and working memory task efficiency under hyperthermia.

Main Methods:

  • Voxel-mirrored homotopic connectivity (VMHC) analysis on resting-state MRI data.
  • Comparison of VMHC in hyperthermia (HT) and normal control (NC) conditions in 14 healthy subjects.
  • Correlation analysis between VMHC and reaction time (RT) in a one-back working memory task.

Main Results:

  • Hyperthermia (HT) significantly increased VMHC in the cuneus, postcentral gyrus, and fusiform gyrus compared to normal control (NC).
  • No regions exhibited decreased VMHC under HT conditions.
  • Negative correlations between RT and VMHC were observed in various brain regions, differing between NC and HT conditions.

Conclusions:

  • Passive heat stress alters interhemispheric functional connectivity at rest.
  • VMHC changes under heat stress may be linked to cognitive performance, suggesting a role in cognitive dysfunction.