Optimum filtering for EROS measurements

Edward L. Maclin, Gabriele Gratton, Monica Fabiani

Research output: Contribution to journalArticlepeer-review


The event-related optical signal (EROS) is a relatively new technology that provides noninvasive data about the time course of neural activity in circumscribed cortical areas. However, much still remains to be learned about the physiology and physics underlying the observed signals. We examined the instrumental and physiological noise observed in the intensity modulation and phase-delay measurements produced by a frequency domain oxymeter in response to steady-state auditory stimuli. We present here data on the effects of different filters on the between-subjects response consistency for amplitude and phase measurements. The results of these analyses may help explain some apparently discrepant results previously reported from different laboratories (Steinbrink et al., 2000), and illustrate differences between data from different types of measurements.

Original languageEnglish (US)
Pages (from-to)542-547
Number of pages6
Issue number4
StatePublished - Jul 2003


  • Auditory cortex
  • EROS
  • Event-related optical signal
  • Optimum filtering

ASJC Scopus subject areas

  • Neuroscience(all)
  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Neurology
  • Endocrine and Autonomic Systems
  • Developmental Neuroscience
  • Cognitive Neuroscience
  • Biological Psychiatry


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