Advanced Auditory Research

Frequency Following Response (FFR) and Acoustic Change Complex (ACC)

Complete control of stimulus and acquisition timeline

• Define times of acquisition by specifying delays and offsets for each stimulus selected
• Permits mixing of stimuli when Auxiliary Output Channel is installed
• Use simple or complex stimuli, including tones, iChirps, speech, and noise
• Define custom stimuli using the built-in conversion utility
• Use stimulus files up to 8 seconds in duration
• Set stimuli to be presented at a specific time, or to be output continuously
• Combine up to 2 stimuli per ear, or present ipsilateral masking
• Ultra-shielded ER3 and ER2 insert earphones options

Acquisition and Analysis of cABR

• Research supporting this technology was developed by Dr. Nina Kraus and colleagues at Northwestern University
• Includes predefined settings for complex stimuli, including speech syllables BA, GA, DA, and more
• Users can create custom settings and stimuli
• cABR specific label markers
• Includes cABR analysis, spectrogram, and phaseogram tools
• Export data, cross-correlation information, or power spectrum of recording
• Interfaces with MATLAB® modules for further analysis
• Visit the Auditory Neuroscience Lab website (brainvolts.northwestern.edu), directed by Dr. Nina Kraus, for information about the research supporting this technology and about upcoming scientific talks by Dr. Kraus.