Recovery of motor performance following startle.

Thackray, Richard I.; Touchstone, R. Mark

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Recovery of motor performance following startle.

1969-10-01
By Thackray, Richard I. ; Touchstone, R. Mark

[PDF-1.12 MB]

English

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Creators:

Thackray, Richard I. ; Touchstone, R. Mark

Thackray, Richard I. ; Touchstone, R. Mark Less -
Corporate Contributors:

United States. Office of Aviation Medicine
Subject/TRT Terms:

[+]

Auditory Perception Behavior Error Analysis Errors Experiments Eye--Movements Eye Movements Heart Beat Heart Rate Human Behavior Human Subject Testing Motor Ability Motor Reactions Motor Skills Noise--Physiological Effect Performance--Testing Performance Tests Physiological Aspects Reaction Time Sonic Boom Startle Reaction
Publication/ Report Number:

AM 69-21 ; DOT/FAA/AM-69/21

AM 69-21 ; DOT/FAA/AM-69/21 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Civil Aerospace Medical Institute
Abstract:

Sudden, high-intensity sounds, such as those produced by sonic booms, can be quite startling. Although many studies have investigated physiological response to startle, much less is known concerning the effects of startle on performance. The present study was designed to provide further information concerning the extent to which startle disrupts performance, the rate of recovery, and characteristics of subjects (Ss) who differ in susceptibility to startle.

Thirty Ss were trained on both reaction time and tracking tasks. Continuous recordings were taken of heart rate and skin conductance. During a subsequent period of continuous tracking, 'startle' stimuli (115 db random noise) were unexpectedly presented. Results revealed the recovery of tracking performance following startle to be quite rapid; performance returned to pre-stimulus levels within 15 seconds following stimulation. Contrary to several previous studies, reaction times to the startle stimuli decreased relative to nonstartle reaction times. Ss with the greatest increase in tracking error following startle were least proficient prior to startle.

There was also an indication that these Ss reacted more strongly to startle, both in terms of subjective response and heart rate acceleration, than those Ss whose tracking was least impaired by startle. An apparent covariation between recovery curves for heart rate and tracking error was found following startle.
Format:

PDF
Collection(s):

FAA Civil Aerospace Medical Institute US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:c10e5b85df525614e18d59a6c7e0572f4f54275a09a2ba491ef20d24a48a13bd
Download URL:

https://rosap.ntl.bts.gov/view/dot/20917/dot_20917_DS1.pdf
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Recovery of motor performance following startle.

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