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Multi-Modal Signals for Analyzing Pain Responses to Thermal and Electrical Stimuli

Multi-Modal Signals for Analyzing Pain Responses to Thermal and Electrical Stimuli

Published on: April 5, 2019

Subjective pain perception mediated by alpha rhythms.

Weiwei Peng¹, Claudio Babiloni², Yanhui Mao³

¹Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China.

Biological Psychology

|June 1, 2015

Summary

This summary is machine-generated.

Pain suppresses alpha oscillations, reflecting cortical excitability changes. These alpha rhythm alterations are influenced by sensory input, tasks, and attention, impacting pain perception across different brain regions.

Keywords:

Affective-motivational Alpha rhythms Cognitive-modulative Pain perception Sensory-discriminative

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Dynamic Quantitative Sensory Testing to Characterize Central Pain Processing

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Published on: February 16, 2017

Area of Science:

Neuroscience
Pain Perception Research
Cognitive Neuroscience

Background:

Alpha oscillations are linked to cortical excitability and are modulated by sensory stimuli.
Pain perception involves complex interactions between sensory, affective, and cognitive factors.
Understanding alpha rhythm changes in pain is crucial for elucidating neural mechanisms.

Purpose of the Study:

To review how sensory, task-related, and cognitive factors modulate alpha oscillatory activities during pain perception.
To explore the functional inhibition hypothesis in the context of pain.
To propose a model for the determinants of pain-related alpha activity.

Main Methods:

Review of existing literature on alpha oscillations and pain perception.
Analysis of alpha event-related desynchronization/synchronization (ERD/ERS) in response to painful stimuli.
Examination of the influence of attention and cognitive tasks on pain-induced alpha changes.

Main Results:

Painful stimuli suppress spontaneous alpha oscillations, indicating reduced cortical excitability.
Alpha ERD/ERS patterns are dependent on the specific cortical regions involved, such as the somatosensory cortex.
Attention modulates pain perception through alterations in alpha rhythms, affecting sensory and affective dimensions.

Conclusions:

The functional inhibition hypothesis is applicable to pain processing.
Cortical region-specific alpha ERD/ERS plays a role in processing painful stimuli.
Alpha rhythms are a key neural mechanism for attention-based modulation of pain experience.