Application of information theory techniques to the analysis of time series obtained from biological systems

• Processo: 00/14357-8
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Data de Início da vigência: 01 de abril de 2002
• Data de Término da vigência: 30 de setembro de 2005
• Área de conhecimento: Ciências Exatas e da Terra - Física - Física Geral
• Pesquisador responsável: Coraci Pereira Malta
• Beneficiário: Alberto Capurro Stanham
• Instituição Sede: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brasil
• Vinculado ao auxílio: 03/12097-7 - Sistemas dinâmicos clássicos e quânticos, AP.TEM
• Assunto(s): Eletrocardiografia Eletroencefalografia
• Palavra(s)-Chave do Pesquisador: Electrocardiogram | Electroencephalogram | Information Theory | Sleep Spindles | Time Series

Resumo

The main objective is to distinguish different dynamical modes in EEG and ECG signals using. Our aim is to contribute to identify the adequate techniques to study the dynamics of complex systems by applying them to processing biological signals. Regarding EEG signals, we intend to focus on two problems : i) to find the differences between the dynamics of two behavioral states (wakefulness and slow wave sleep, which are associated with a characteristic degree of synchronization of the EEG), comparing "stationary" moments of EEG which are typical of each case, and ii) to detect transients called sleep spindles (trains at 14 Hz originated by a neuronal oscillator in the reticular nucleus of thalamus). For these transients we aim to identify suitable methods to differentiate between spindles in normal subjects and spindles in patients with history of thalamic stoke. Regarding ECG, using a simultaneous recording of ECG and respiration, we intend to find adequate tools to differentiate between the variability of normal trace and that from diabetic patients. (AU)

Publicações científicas

(Referências obtidas automaticamente do Web of Science e do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores)

PAKDAMAN, KHASHAYAR; CAPURRO STANHAM, ALBERTO. The electric fish Brachyhypopomus pinnicaudatus produces jamming avoidance responses to signals that are harmonically related to its own discharges. Journal of Experimental Biology, v. 207, n. 17, p. 2907-2916, Aug. 2004. (00/14357-8)

CONTRERAS, P.; MIGLIARO, E. R.; CAPURRO STANHAM, ALBERTO; MALTA, CORACI PEREIRA. Cross-correlation of heartbeat and respiration rhythms. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, v. 356, n. 1, p. 37-42, Oct. 2005. (00/14357-8)

DIAMBRA, LUIS; MALTA, CORACI PEREIRA. Model for the respiratory modulation of the heart beat-to-beat time interval series. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, v. 355, n. 2/4, p. 439-460, Sept. 2005. (00/14357-8)