When is now? Perception of simultaneity.
Reads0
Chats0
TLDR
PSS values were significantly affected by observer–stimulus distance, suggesting that observers do not take account of changes in distance on the resultant difference in arrival times of light and sound and for the perception of multisensory stimuli.Abstract:
We address the following question: Is there a difference (D) between the amount of time for auditory and visual stimuli to be perceived? On each of 1000 trials, observers were presented with a light-sound pair, separated by a stimulus onset asynchrony (SOA) between -250 ms (sound first) and +250 ms. Observers indicated if the light-sound pair came on simultaneously by pressing one of two (yes or no) keys. The SOA most likely to yield affirmative responses was defined as the point of subjective simultaneity (PSS). PSS values were between -21 ms (i.e. sound 21 ms before light) and +150 ms. Evidence is presented that each PSS is observer specific. In a second experiment, each observer was tested using two observer-stimulus distances. The resultant PSS values are highly correlated (r = 0.954, p = 0.003), suggesting that each observer's PSS is stable. PSS values were significantly affected by observer-stimulus distance, suggesting that observers do not take account of changes in distance on the resultant difference in arrival times of light and sound. The difference RTd in simple reaction time to single visual and auditory stimuli was also estimated; no evidence that RTd is observer specific or stable was found. The implications of these findings for the perception of multisensory stimuli are discussed.read more
Citations
More filters
Journal ArticleDOI
Neuronal Oscillations and Multisensory Interaction in Primary Auditory Cortex
Peter Lakatos,Chi-Ming Chen,Monica N. O'Connell,Aimee Mills,Charles E. Schroeder,Charles E. Schroeder +5 more
TL;DR: The timing and laminar profile of the multisensory interactions in A1 indicate that nonspecific thalamic systems may play a key role in the effect and underscore the instrumental role of neuronal oscillations in cortical operations.
Journal ArticleDOI
Recalibration of audiovisual simultaneity
TL;DR: It is reported that after exposure to a fixed audiovisual time lag for several minutes, human participants showed shifts in their subjective simultaneity responses toward that particular lag, suggesting that the brain attempts to adjust subjective simultaneousity across different modalities by detecting and reducing time lags between inputs that likely arise from the same physical events.
Journal ArticleDOI
Multisensory prior entry.
TL;DR: The results provide the strongest evidence to date for the existence of multisensory prior entry and support previous claims for attentional biases toward the visual modality and toward the right side of space.
Journal ArticleDOI
Perception of intersensory synchrony: A tutorial review
Jean Vroomen,Mirjam Keetels +1 more
TL;DR: Four mechanisms of how intersensory lags might be dealt with are identified: by ignoring lags up to some point (a wide window of temporal integration), by compensating for predictable variability, by adjusting the point of perceived synchrony on the longer term, and by shifting one stream directly toward the other.
Journal ArticleDOI
The Leading Sense: Supramodal Control of Neurophysiological Context by Attention
Peter Lakatos,Peter Lakatos,Monica N. O'Connell,Annamaria Barczak,Annamaria Barczak,Aimee Mills,Daniel C. Javitt,Daniel C. Javitt,Charles E. Schroeder,Charles E. Schroeder +9 more
TL;DR: A supramodal mechanism by which attention can control neurophysiological context is outlined, thus determining the representation of specific sensory content in primary sensory cortex.
References
More filters
Book
The Merging of the Senses
Barry E. Stein,M. Alex Meredith +1 more
TL;DR: The authors draw on their own experiments to illustrate how sensory inputs converge on individual neurons in different areas of the brain, how these neurons integrate their inputs, the principles by which this integration occurs, and what this may mean for perception and behavior.
Book
Data analysis : a Bayesian tutorial
TL;DR: This tutorial jumps right in to the power ofparameter estimation without dragging you through the basic concepts of parameter estimation.
Book
Statistical data analysis
TL;DR: In this article, the Monte Carlo method is used to estimate probability functions and statistical errors, confidence intervals and limits, and the method of least squares is used for estimating probability functions.
Journal ArticleDOI
Reaction time as a measure of intersensory facilitation.
TL;DR: In measuring reaction time (RT) to simultaneously presented stimuli, Todd (1912) found facilitation when sound and electric shock were paired but no effect when light was paired with either sound or shock; these results may be understood using the scheme suggested by Hilgard (1933) to account for facilitation of the eyeblink reflex.
Journal ArticleDOI
Statistical Data Analysis
TL;DR: The Monte Carlo Method is used to estimate the likelihood of various probability functions, and its application to parameter estimation is illustrated in the following examples.