Related Experiment Video
Updated: Jan 4, 2026
12:03
A Method for Tracking the Time Evolution of Steady-State Evoked Potentials
Published on: May 25, 2019
8.9K
Change-Related Acceleration Effects on Auditory Steady State Response.
Shunsuke Sugiyama1, Tomoaki Kinukawa2, Nobuyuki Takeuchi3
1Department of Psychiatry and Psychotherapy, Graduate School of Medicine, Gifu University, Gifu, Japan.
Frontiers in Systems Neuroscience
|November 5, 2019
Summary
Sensory change detection speeds up brain processing, as shown by faster auditory steady-state responses (ASSR). Rarer stimuli led to greater acceleration, indicating ASSR latency is a sensitive index of processing speed.
Area of Science:
- Neuroscience
- Auditory Perception
- Cognitive Psychology
Background:
- Rapid sensory change detection is crucial for survival.
- Previous research linked change-related cortical responses to sensory memory and comparison, but not processing speed.
- The role of processing speed in change detection remains unclear.
Purpose of the Study:
- To investigate the acceleration effects of sensory change events on neural processing.
- To determine if change-related cortical responses reflect processing speed.
- To examine the relationship between stimulus probability and auditory steady-state response (ASSR) latency.
Main Methods:
- Simultaneous magnetoencephalography (MEG) recording of auditory steady-state response (ASSR) and change-related responses.
- Utilized an oddball paradigm with sudden changes in sound pressure.
- Compared ASSR latency across varying probabilities of the test stimulus (0%, 25%, 75%, 100%).
Main Results:
- Stronger acceleration effects on ASSR were observed with rarer stimuli for both control and test conditions.
- ASSR modulation occurred without peripheral input changes, suggesting higher cortical involvement.
- Reduced ASSR latency indicated that new sensory events accelerate ongoing processing.
Conclusions:
- Change-related cortical responses and ASSR are influenced by physical changes, sensory memory, and comparison processes.
- The latency of ASSR serves as a sensitive indicator of accelerated sensory processing.
- New sensory events enhance the speed of neural processing, potentially involving brain areas beyond the primary cortex.
More Related Videos
Related Concept Videos
01:05Doppler Effect - II
4.3K
The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
4.3K
01:31Hearing
56.3K
When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
56.3K
01:13The Cochlea
50.2K
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
50.2K