Biomaterial Database

Commentary: somatosensory evoked potentials and magnetic fields. 1983

H Stowell

Evidence is offered for the requirement of more careful comparisons between the new event related magnetic fields of the brain (ERMFb) and their conventional counterparts the event related brain potentials (ERBP), in the somato-sensory (SEP) and auditory (AEP) modalities at least, because the existing ERBP literature contains a wealth of well-documented data on these crucial issues: (1) Contralateral and ipsilateral SEP; (2) the relevance of "background" intrinsic periodicity; and (3) the relevance of stimulus parameters, receptive fields, and subjective perceptual status to variations in the waveforms. The importance of the new 2nd derivative magnetic gradiometry for better spatiotemporal resolution of sources and for functional understanding of cerebral electrophysiology cannot be overestimated. So it may be equally important to ensure that existing, historical data from conventional scalp-conductance, systematically recorded and analyzed during the past twenty years, are not ignored at the inception of essential comparisons using complementary electromagnetic techniques.

UI	MeSH Term	Description	Entries
D008280	Magnetics	The study of MAGNETIC PHENOMENA.	Magnetic
D010812	Physical Stimulation	Act of eliciting a response from a person or organism through physical contact.	Stimulation, Physical,Physical Stimulations,Stimulations, Physical
D001921	Brain	The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.	Encephalon
D004558	Electric Stimulation	Use of electric potential or currents to elicit biological responses.	Stimulation, Electric,Electrical Stimulation,Electric Stimulations,Electrical Stimulations,Stimulation, Electrical,Stimulations, Electric,Stimulations, Electrical
D004560	Electricity	The physical effects involving the presence of electric charges at rest and in motion.
D005073	Evoked Potentials, Somatosensory	The electric response evoked in the CEREBRAL CORTEX by stimulation along AFFERENT PATHWAYS from PERIPHERAL NERVES to CEREBRUM.	Somatosensory Evoked Potentials,Evoked Potential, Somatosensory,Somatosensory Evoked Potential
D005712	Galvanic Skin Response	A change in electrical resistance of the skin, occurring in emotion and in certain other conditions.	Electric Conductance, Skin,Electrodermal Response,Reflex, Psychogalvanic,Skin Electric Conductance,Conductance, Skin Electric,Conductances, Skin Electric,Electric Conductances, Skin,Electrodermal Responses,Galvanic Skin Responses,Psychogalvanic Reflex,Response, Electrodermal,Response, Galvanic Skin,Responses, Electrodermal,Responses, Galvanic Skin,Skin Response, Galvanic,Skin Responses, Galvanic
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001288	Attention	Focusing on certain aspects of current experience to the exclusion of others. It is the act of heeding or taking notice or concentrating.	Focus of Attention,Selective Attention,Social Attention,Attention Focus,Attention, Selective,Attention, Social,Selective Attentions