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Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety
Published on: January 20, 2012
Medial orbitofrontal cortex is associated with fatigue sensation.
Seiki Tajima1, Shigeyuki Yamamoto, Masaaki Tanaka
1Hyogo Children's Sleep and Development Medical Research Center, Hyogo Rehabilitation Centre Central Hospital, 1070 Akebono-cho, Nishi-ku, Kobe 651-2181, Japan.
Neurology Research International
|December 29, 2010
Summary
Mental fatigue is a crucial bioalarm. This study identified the medial orbitofrontal cortex as a key brain region involved in the sensation of mental fatigue.
Area of Science:
- Neuroscience
- Cognitive Science
- Psychology
Background:
- Fatigue serves as a vital bioalarm, signaling the need to prevent exhaustion from overwork or stress.
- Understanding the neural mechanisms of fatigue sensation is essential for effective fatigue management.
Purpose of the Study:
- To elucidate the neural mechanisms underlying the sensation of mental fatigue.
- To identify specific brain regions associated with subjective fatigue experiences.
Main Methods:
- Utilized H(2)(15)O positron emission tomography (PET) scans to measure neural activity.
- Subjects performed two 35-minute fatigue-inducing advanced trail-making tests.
- Employed statistical parametric mapping (SPM) for correlation analysis between brain activity and subjective fatigue ratings.
Main Results:
- A significant positive correlation was observed between brain region activity and subjective fatigue.
- This correlation was localized to the medial orbitofrontal cortex (Brodmann's area 10/11).
Conclusions:
- The medial orbitofrontal cortex is identified as a key brain region associated with the sensation of mental fatigue.
- These findings offer novel insights into the neural basis of fatigue.
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