Key result
Increased baseline brain activity in the medial thalamus and lateral frontoparietal network 3 seconds before stimulus presentation predicted conscious perception of low-intensity somatosensory stimuli.
Why the study?
Does baseline brain activity predict conscious perception of somatosensory stimuli in humans?
Population
Humans
Design
Other
Authors
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Baseline fluctuations may influence perception of weak stimuli; leaves open clinical relevance for nociception or consciousness disorders.
Observational (n=26)
No
Does baseline brain activity predict conscious perception of somatosensory stimuli in humans?
p-value: p=<0.001
Baseline brain-activity fluctuations significantly influence conscious perception of external somatosensory and nociceptive stimuli.
Boly et al. (2007) conducted an observational in Healthy volunteers (n=26). Thulium-YAG laser stimulation vs. Unperceived or lower intensity stimuli was evaluated on Prediction of conscious perception of low-intensity somatosensory stimuli by baseline brain activity in the intraparietal sulcus (p=<0.001). Increased baseline brain activity in the medial thalamus and lateral frontoparietal network 3 seconds before stimulus presentation predicted conscious perception of low-intensity somatosensory stimuli.
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