Effects of Natural Sounds on Attention Restoration in Noisy Environment

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

162 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-08-25

Study Completion Date

2023-06-15

Brief Summary

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This study aims to examine whether listening to natural sounds in a noisy (traffic) environment compared to traffic noise only impacts behavioural, cognitive, affective, and physiological markers associated with attention restoration. Attention restoration will be examined as an aspect of cognitive fatigue.

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Detailed Description

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Based on the Attention Restoration Theory (Kaplan, 1995), we hypothesize that listening to natural sounds has restorative effects on attention by supporting greater use of involuntary attention. This generates the prediction that exposure to natural sounds in the context of a noisy environment will have greater restorative effects on attention (i.e., physiological, affect, cognition, and behaviour) as compared to the control group (exposed to noise only). Individual differences (i.e., age, gender, caffeine and food intake, body mass index, skin temperature, noise sensitivity, sleep quality, baseline physiology and behavioural performance) will be examined and accounted for. A cognitive task will be administered at the beginning of the experiment to induce fatigue to examine the restorative effects of natural sounds.

Conditions

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Cognitive Fatigue Mental Fatigue Heart Rate Variability Skin Conductance Behavioral Performance Positive and Negative Affect Inhibition Working Memory Perceived Restoration

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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Traffic Sound

600 seconds of traffic sound

Group Type ACTIVE_COMPARATOR

Baseline

Intervention Type OTHER

5-min urban park video clip (Presented on a TV)

Fatigue Manipulation

Intervention Type OTHER

20-min 2-back task (Presented on a computer)

Traffic Sound

Intervention Type OTHER

Active Comparator: Traffic Sound (Played through speakers)

Traffic and Masking Sounds

600 seconds of traffic and masking sound

Group Type EXPERIMENTAL

Baseline

Intervention Type OTHER

5-min urban park video clip (Presented on a TV)

Fatigue Manipulation

Intervention Type OTHER

20-min 2-back task (Presented on a computer)

Traffic and Masking Sound

Intervention Type OTHER

Experimental: Traffic and Masking Sound (Played through speakers)

Silence

600 seconds of no sound

Group Type ACTIVE_COMPARATOR

Baseline

Intervention Type OTHER

5-min urban park video clip (Presented on a TV)

Fatigue Manipulation

Intervention Type OTHER

20-min 2-back task (Presented on a computer)

Silence

Intervention Type OTHER

No Intervention: No sound (Played through speakers)

Interventions

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Baseline

5-min urban park video clip (Presented on a TV)

Intervention Type OTHER

Fatigue Manipulation

20-min 2-back task (Presented on a computer)

Intervention Type OTHER

Traffic Sound

Active Comparator: Traffic Sound (Played through speakers)

Intervention Type OTHER

Traffic and Masking Sound

Experimental: Traffic and Masking Sound (Played through speakers)

Intervention Type OTHER

Silence

No Intervention: No sound (Played through speakers)

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Singapore-based
* Non-clinical
* 18-35years

Exclusion Criteria

* Individuals with hearing difficulties or failing to meet the minimal threshold for normal hearing
* Individuals with a history of ear, developmental, neurological, or psychiatric disorder

Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes