Related Experiment Video
Updated: Aug 14, 2026
06:56
Somatosensory Event-related Potentials from Orofacial Skin Stretch Stimulation
Published on: December 18, 2015
500-1000 Hz responses in the somatosensory system: approaching generators and function
1Charité-Universitätsmedizin Berlin, CBF, Dept. ol Neurology, Hindenburgdamm 30, 12200 Berlin, Germany. fabian.klostermann@charite.de
Clinical EEG and Neuroscience
|November 22, 2005
Summary
This study surveys literature on ultrafast oscillatory electroencephalography (EEG) activities, specifically focusing on high-frequency bursts in somatosensory evoked potentials (SEP). It explores their origins, functions in somatosensory coding, and potential applications.
Area of Science:
- Neuroscience
- Electrophysiology
Background:
- Spontaneous and stimulus-induced EEG activities span frequencies from 1 Hz to 1 kHz.
- Ultrafast EEG signals include high-frequency bursts (e.g., 1000 Hz, 600 Hz) within somatosensory evoked potentials (SEP).
Purpose of the Study:
- To survey existing literature on the generators and functions of ultrafast EEG activities.
- To investigate the anatomical and cellular origins of burst SEP.
- To explore the impact of burst SEP on somatosensory coding and potential applications.
Main Methods:
- Literature review and survey of relevant studies.
- Analysis of hypotheses regarding the origin and function of high-frequency EEG bursts.
- Synthesis of findings on somatosensory coding and clinical perspectives.
Main Results:
- Hypotheses on the generators and functions of ultrafast EEG activities have been developed in numerous studies.
- Burst SEP, observed at 1000 Hz and 600 Hz, are superimposed on primary thalamic and cortical components.
- The impact of burst SEP on somatosensory coding and their potential applications are discussed.
Conclusions:
- Further research is needed to fully elucidate the anatomical and cellular origins of burst SEP.
- Understanding these high-frequency activities may offer new insights into somatosensory processing.
- Potential scientific and clinical applications of burst SEP warrant further investigation.
Related Concept Videos
01:33Somatosensation
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.
01:11Sensory Perception: Organization of the Somatosensory System
The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the stimulus...
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the stimulus...
01:16Sensory Functions of the Skin
The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
01:29Overview of Somatic Sensory Pathways
Somatic sensory or somatosensory pathways refer to the neural pathways that carry information related to touch, pressure, pain, temperature, and proprioception from the skin, muscles, tendons, and joints to the brain. These pathways involve several stages of processing and integration of sensory information.
The somatosensory system is divided into three main pathways: the dorsal (or posterior) column-medial lemniscus, spinothalamic (or anterolateral), and spinocerebellar pathways.
The dorsal...
The somatosensory system is divided into three main pathways: the dorsal (or posterior) column-medial lemniscus, spinothalamic (or anterolateral), and spinocerebellar pathways.
The dorsal...
01:18Functions of the Nervous System
The nervous system is responsible for coordinating and regulating the body's functions. It functions through three main processes: sensory, integrative, and motor processes. Sensory function involves the detection and transmission of information about internal and external stimuli from sensory receptors to the CNS. The CNS processes this information through an integrative function, where it interprets and makes decisions based on the incoming sensory information. Finally, the motor function...
01:13The Cochlea
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.