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Hearing

Hearing

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.

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Related Experiment Video

Updated: Jul 11, 2025

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

Sound category habituation requires task-relevant attention.

Howard S Moskowitz¹, Elyse S Sussman^1,2

¹Department of Otorhinolaryngology-Head and Neck Surgery, Albert Einstein College of Medicine, Bronx, NY, United States.

Frontiers in Neuroscience

|November 9, 2023

Summary

This summary is machine-generated.

Attention is crucial for implicit learning and sound categorization, especially when processing novel sounds. Without focused attention, cognitive processes like speech perception and sequence learning are significantly impaired.

Keywords:

attention categorical perception event-related brain potentials (ERPs)implicit learning speech

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Last Updated: Jul 11, 2025

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

Touchscreen Sustained Attention Task SAT for Rats

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Published on: September 15, 2017

Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization

Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization

Published on: April 19, 2017

Area of Science:

Cognitive Neuroscience
Auditory Perception
Neuroscience

Background:

Sensory information processing is vital for learning, social interaction, and well-being.
Understanding the neural basis of auditory processing and attention is key to cognitive function.

Purpose of the Study:

To investigate the role of attention in implicit learning, sound categorization, and speech perception.
To differentiate between stimulus-specific and conceptual categorical effects in auditory processing.

Main Methods:

Neurophysiological responses were measured during a sound categorization task.
An experimental design presented non-repeating categorical stimulus tokens to isolate conceptual effects.
Participants engaged in either a task-relevant categorization or a task-irrelevant passive listening condition.

Main Results:

Attended sounds showed implicit learning, categorical habituation, and a speech perception bias.
Task-irrelevant listening resulted in no speech perception bias, no sequence learning, and no repetition suppression.
Scalp-recorded brain activity showed no category perception during passive movie watching.

Conclusions:

Attention is necessary for maintaining category identification and expectations from structured sound sequences.
Top-down control, driven by attention, is essential for higher-level cognitive processing of auditory information.