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A Method for Tracking the Time Evolution of Steady-State Evoked Potentials
Published on: May 25, 2019
Linear and nonlinear temporal interaction components of mid-latency auditory evoked potentials obtained with maximum
Brigitte A Lavoie1, Angela Barks, A R D Thornton
1Balabee Ltd, 100 Kent Road, Southampton, Hants, SO17 2LH, UK. balavoie@balabee.co.uk
Experimental Brain Research
|December 8, 2009
Summary
Maximum length sequences (MLS) reveal auditory mid-latency responses (MLR). Nonlinear temporal interaction components (NLTICs) were rarely observed in MLR, suggesting either weak interactions or a short MLR memory length.
Area of Science:
- Auditory Neuroscience
- Neurophysiology
- Signal Processing
Background:
- Maximum length sequences (MLS) facilitate simultaneous recording of linear and nonlinear temporal interaction components (NLTICs).
- NLTICs arise from stimulation rates exceeding system memory length, enabling analysis of complex neural dynamics.
Purpose of the Study:
- To characterize the NLTICs of auditory mid-latency responses (MLR) using MLS.
- Investigate the presence and nature of nonlinear interactions within the MLR generators.
Main Methods:
- Forty normally hearing subjects (19-45 years old) participated.
- Auditory mid-latency responses were elicited using MLS at stimulation rates from 20 to 120 clicks/s.
Main Results:
- Linear components of the MLR were consistently identifiable across all tested rates.
- NLTICs within the MLS-MLR were observed in only a small subset of subjects.
Conclusions:
- The limited observation of NLTICs suggests either weak nonlinear temporal interactions in MLR generators or a shorter MLR memory length than anticipated.
- Higher stimulation rates may be necessary to reliably elicit NLTICs in MLR.
