Auditory stimulus intensity gradients and response to methylphenidate in ADD children

1990 ◽  
Vol 25 (4) ◽  
pp. 180-194
Author(s):  
Peggy T. Ackerman ◽  
Roscoe A. Dykman ◽  
D. Michael Oglesby
Keyword(s):  
Auditory Stimulus ◽  
Stimulus Intensity

Increased auditory stimulus intensity results in an earlier and faster rise in corticospinal excitability

2020 ◽  
Vol 1727 ◽  
pp. 146559
Author(s):  
Laura St. Germain ◽  
Victoria Smith ◽  
Dana Maslovat ◽  
Anthony Carlsen
Keyword(s):  
Auditory Stimulus ◽  
Stimulus Intensity ◽  
Corticospinal Excitability

Disinhibition and the processing of auditory stimulus intensity: An ERP-study

1989 ◽  
Vol 10 (4) ◽  
pp. 445-451 ◽  
Author(s):  
J.F. Orlebeke ◽  
A. Kok ◽  
C.W. Zeillemaker
Keyword(s):  
Auditory Stimulus ◽  
Stimulus Intensity

scholarly journals Responses to Loud Acoustic Stimuli: Short and Long Timescale Effects on Cortical and Sub-Cortical Preparation Reflect Conditional Probability

2020 ◽  
Author(s):  
An T. Nguyen ◽  
James R. Tresilian ◽  
Ottmar V. Lipp ◽  
Dayse Tavora-Vieira ◽  
Welber Marinovic
Keyword(s):  
Conditional Probability ◽  
Auditory Stimulus ◽  
Stimulus Intensity ◽  
Cortical Excitability ◽  
Movement Preparation ◽  
Movement Onset ◽  
Eeg Activity ◽  
Motor Responses ◽  
Acoustic Stimuli ◽  
Startreact Effect

AbstractLoud acoustic stimuli (LAS) can trigger prepared motor responses at very short latencies: the StartReact effect. In this study, we tested the proposal that responses to LAS in the StartReact effect could be explained by stimulus intensity effects combined with movement-related preparation changes on nervous system excitability. Using a simple auditory reaction time task, we induced different levels of preparation by systematically manipulating the conditional probability and temporal location of the auditory stimulus (LAS or non-intense tone). We then examined how preparation-levels influenced motor responses to LAS and non-intense tones, as well as cortical and sub-cortical excitability — reflected by electroencephalographic (EEG) activity before the onset of the auditory stimulus, and the eye-blink startle reflex.On both tone and LAS trials, higher preparation conditions were accompanied with reductions in movement onset time, increased force, as well as enhanced cortical (in auditory and motor areas) and sub-cortical excitability. At the trial-level, we found that enhanced pre-stimulus EEG activity in sensory and motor areas was associated with earlier movement onset on tone trials, and shorter blink onset latencies were associated with earlier movement onset on LAS trials. The results show that movement preparation is associated with wide-spread changes in cortical and sub-cortical excitability, and that movement preparation (combined with stimulus-intensity effects) plays a critical role in shaping responses to both non-intense tones and LAS.

The influence of auditory stimulus intensity on apparent duration

1968 ◽  
Author(s):  
Birgitta Berglund ◽  
Ulf Berglund ◽  
Gosta Ekman ◽  
Marianne Frankenhaeuser
Keyword(s):  
Auditory Stimulus ◽  
Stimulus Intensity ◽  
Apparent Duration

Automatic Detection of Frequency Changes Depends on Auditory Stimulus Intensity

1999 ◽  
Vol 20 (3) ◽  
pp. 265-270 ◽  
Author(s):  
Sirkku Salo ◽  
A. Heikki Lang ◽  
Olli Aaltonen ◽  
Kalle Lertola ◽  
Tarmo Kärki
Keyword(s):  
Auditory Stimulus ◽  
Stimulus Intensity ◽  
Automatic Detection ◽  
Frequency Changes

scholarly journals Multisensory Facilitation of Behavior in Monkeys: Effects of Stimulus Intensity

2010 ◽  
Vol 22 (12) ◽  
pp. 2850-2863 ◽  
Author(s):  
Céline Cappe ◽  
Micah M. Murray ◽  
Pascal Barone ◽  
Eric M. Rouiller
Keyword(s):  
Auditory Stimulus ◽  
Stimulus Intensity ◽  
Saccadic Eye Movements ◽  
Improve Performance ◽  
Probability Summation ◽  
Impact Performance ◽  
Simple Detection ◽  
Multisensory Interactions ◽  
Behaving Monkeys ◽  
Perceptual Threshold

Multisensory stimuli can improve performance, facilitating RTs on sensorimotor tasks. This benefit is referred to as the redundant signals effect (RSE) and can exceed predictions on the basis of probability summation, indicative of integrative processes. Although an RSE exceeding probability summation has been repeatedly observed in humans and nonprimate animals, there are scant and inconsistent data from nonhuman primates performing similar protocols. Rather, existing paradigms have instead focused on saccadic eye movements. Moreover, the extant results in monkeys leave unresolved how stimulus synchronicity and intensity impact performance. Two trained monkeys performed a simple detection task involving arm movements to auditory, visual, or synchronous auditory–visual multisensory pairs. RSEs in excess of predictions on the basis of probability summation were observed and thus forcibly follow from neural response interactions. Parametric variation of auditory stimulus intensity revealed that in both animals, RT facilitation was limited to situations where the auditory stimulus intensity was below or up to 20 dB above perceptual threshold, despite the visual stimulus always being suprathreshold. No RT facilitation or even behavioral costs were obtained with auditory intensities 30–40 dB above threshold. The present study demonstrates the feasibility and the suitability of behaving monkeys for investigating links between psychophysical and neurophysiologic instantiations of multisensory interactions.

Auditory stimulus intensity effects on components of the late positive complex

1982 ◽  
Vol 54 (2) ◽  
pp. 132-146 ◽  
Author(s):  
Walton T Roth ◽  
Geoffrey H Blowers ◽  
Carol M Doyle ◽  
Bert S Kopell
Keyword(s):  
Auditory Stimulus ◽  
Stimulus Intensity ◽  
Late Positive Complex ◽  
Positive Complex

Evoked field (EF) and evoked potential (EP) responses to variable auditory stimulus intensity in schizophrenic and normal adults

1989 ◽  
Vol 25 (7) ◽  
pp. A22
Author(s):  
Steven Linnville ◽  
John Whalen ◽  
Martin Reite ◽  
Peter Teale ◽  
Dana Scheuneman
Keyword(s):  
Auditory Stimulus ◽  
Stimulus Intensity ◽  
Evoked Potential ◽  
Normal Adults
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