From neurovascular coupling to neurovascular cascade: A study on neural, autonomic and vascular transients in attention

V. Bari, P. Calcagnile, E. Molteni, R. Re, D. Contini, L. Spinelli, M. Caffini, A. Torricelli, R. Cubeddu, S. Cerutti, A. M. Bianchi

Research output: Contribution to journalArticle

Abstract

Mental processes bring about neural, vascular and autonomic changes in the brain cortex. Due to the different nature of these modifications, their onsets show no synchrony and time dynamics is often strongly dissimilar. After acquiring data from a group of 16 subjects, we estimated temporal correlation between task and signals in order to assess possible influences induced by an attentive task on electroencephalographic (EEG), heart rate variability (HRV), oxy- and deoxy-haemoglobin concentration signals. We also investigated correlations and time delays between couples of different biological signals. This allowed for the isolation of a subgroup of subjects showing similar tracks. Cardiac frequency and deoxy-haemoglobin signals displayed a strong positive correlation with the task design, while EEG alpha rhythm and oxygenation showed a negative correlation. Neural electrical response was nearly instantaneous with respect to the task progression, and autonomic response showed a mean delay of about 15s and a slower hemodynamic response (mean delay above 20s) was finally induced. Globally, the task elicited a cascade of responses, in which delays can be quantified.

Original languageEnglish
Pages (from-to)1379-1397
Number of pages19
JournalPhysiological Measurement
Volume33
Issue number8
DOIs
Publication statusPublished - Aug 2012

Keywords

  • divided attention
  • EEG
  • hemodynamic response
  • neurovascular coupling
  • NIRS

ASJC Scopus subject areas

  • Biophysics
  • Physiology
  • Physiology (medical)

Fingerprint Dive into the research topics of 'From neurovascular coupling to neurovascular cascade: A study on neural, autonomic and vascular transients in attention'. Together they form a unique fingerprint.

  • Cite this

    Bari, V., Calcagnile, P., Molteni, E., Re, R., Contini, D., Spinelli, L., Caffini, M., Torricelli, A., Cubeddu, R., Cerutti, S., & Bianchi, A. M. (2012). From neurovascular coupling to neurovascular cascade: A study on neural, autonomic and vascular transients in attention. Physiological Measurement, 33(8), 1379-1397. https://doi.org/10.1088/0967-3334/33/8/1379