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- Title
El filtraje sensorial como una función adaptativa esencial para el humano.
- Authors
Báez Martín, Margarita Minou; Morales Chacón, Lilia María; Alarcón Calaña, Celia; Bergado Rosado, Jorge Alberto
- Abstract
Objective: To describe the mechanisms involved in sensory filtering and its evaluation using Clinical Neurophysiology techniques. Acquisition of evidence: A search of the last twenty years was carried out in the PubMed database with the keywords sensory gating, sensory gating AND eventrelated potentials, epilepsy, and schizophrenia. A total of 97 articles were reviewed in English and Spanish. Results: Sensory filtering failure could lead to impaired brain capacity to select, process, and store information, which can significantly contribute to cognitive dysfunction or psychosis. It is based on indices such as suppression of P50, N100, and P200, and prepulse inhibition of the startle response. The evaluation is basically carried out by calculating the amplitude quotient of the components to the first and second stimulus (S2 / S1) and their difference in amplitude (S1-S2). The generators of components vary depending on the sensory modality in question. For auditory exploration, it is proposed that the generators of P50 component be located at the level of the temporal lobe, while the filtering process itself takes place in areas of the frontal lobe. Conclusions: The reports in the literature support the use of clinical neurophysiology techniques for the study of the mechanisms involved in sensory filtering and its alterations in various diseases of the central nervous system.
- Publication
Revista Cubana de Neurología y Neurocirugía, 2021, Vol 11, Issue 1, p1
- ISSN
2225-4676
- Publication type
Article