scholarly journals Perceptual content, not physiological signals, determines perceived duration when viewing dynamic, natural scenes

2018 ◽  
Author(s):  
Marta Suárez-Pinilla ◽  
Kyriacos Nikiforou ◽  
Zafeirios Fountas ◽  
Anil Seth ◽  
Warrick Roseboom
Keyword(s):  
Time Perception ◽  
Physiological Signals ◽  
Perceptual Content ◽  
Natural Scenes ◽  
Neural Basis ◽  
Recent Proposal ◽  
Physiological Factors ◽  
Physiological Processes ◽  
Scene Content ◽  
Perceived Duration

The neural basis of time perception remains unknown. A prominent account is the pacemaker-accumulator model, wherein regular ticks of some physiological or neural pacemaker are read out as time. Putative candidates for the pacemaker have been suggested in physiological processes (heartbeat), or dopaminergic mid-brain neurons, whose activity has been associated with spontaneous blinking. However, such proposals have difficulty accounting for observations that time perception varies systematically with perceptual content. We examined physiological influences on human duration estimates for naturalistic videos between 1-64 seconds using cardiac and eye recordings. Duration estimates were biased by the amount of change in scene content. Contrary to previous claims, heart rate, and blinking were not related to duration estimates. Our results support a recent proposal that tracking change in perceptual classification networks provides a basis for human time perception, and suggest that previous assertions of the importance of physiological factors should be tempered.

scholarly journals Perceptual Content, Not Physiological Signals, Determines Perceived Duration When Viewing Dynamic, Natural Scenes

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Marta Suárez-Pinilla ◽  
Kyriacos Nikiforou ◽  
Zafeirios Fountas ◽  
Anil K. Seth ◽  
Warrick Roseboom
Keyword(s):  
Time Perception ◽  
Physiological Signals ◽  
Perceptual Content ◽  
Natural Scenes ◽  
Neural Basis ◽  
Recent Proposal ◽  
Physiological Factors ◽  
Physiological Processes ◽  
Scene Content ◽  
Perceived Duration

The neural basis of time perception remains unknown. A prominent account is the pacemaker-accumulator model, wherein regular ticks of some physiological or neural pacemaker are read out as time. Putative candidates for the pacemaker have been suggested in physiological processes (heartbeat), or dopaminergic mid-brain neurons, whose activity has been associated with spontaneous blinking. However, such proposals have difficulty accounting for observations that time perception varies systematically with perceptual content. We examined physiological influences on human duration estimates for naturalistic videos between 1–64 seconds using cardiac and eye recordings. Duration estimates were biased by the amount of change in scene content. Contrary to previous claims, heart rate, and blinking were not related to duration estimates. Our results support a recent proposal that tracking change in perceptual classification networks provides a basis for human time perception, and suggest that previous assertions of the importance of physiological factors should be tempered.

scholarly journals Aesthetic Preference and Time: Preferred Painting Dilates Time Perception

SAGE Open ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 215824402093990
Author(s):  
Lingjing Li ◽  
Yu Tian
Keyword(s):  
Time Perception ◽  
Reproduction Task ◽  
Aesthetic Preference ◽  
Temporal Reproduction ◽  
Time Perceptions ◽  
Aesthetic Preferences ◽  
Perceived Duration

In the domain of aesthetic preference, previous studies focused primarily on exploring the factors that influence aesthetic preference while neglecting to investigate whether aesthetic preference affects other psychological activities. This study sought to expand our understanding of time perception by examining whether aesthetic preference in viewing paintings influenced its perceived duration. Participants who preferred Chinese paintings ( n = 20) and participants who preferred western paintings ( n = 21) were recruited to complete a temporal reproduction task that measured their time perception of Chinese paintings and of western paintings. The results showed that participants who preferred Chinese paintings exhibited longer time perceptions for Chinese paintings than for western paintings, while the participants who preferred western paintings exhibited longer time perceptions for western paintings than for Chinese paintings. These results suggested that aesthetic preference could modulate our perceived duration of painting presentation. Specifically, individuals perceive longer painting presentation durations when exposed to the stimuli matching their aesthetic preferences.

scholarly journals Emotional moments across time: a possible neural basis for time perception in the anterior insula

2009 ◽  
Vol 364 (1525) ◽  
pp. 1933-1942 ◽  
Author(s):  
A.D. (Bud) Craig
Keyword(s):  
Time Perception ◽  
Functional Imaging ◽  
Insular Cortex ◽  
Anterior Insula ◽  
Time Base ◽  
Afferent Activity ◽  
Neural Basis ◽  
Time Intervals ◽  
Neural Substrate ◽  
Nature Of Time

A model of awareness based on interoceptive salience is described, which has an endogenous time base that might provide a basis for the human capacity to perceive and estimate time intervals in the range of seconds to subseconds. The model posits that the neural substrate for awareness across time is located in the anterior insular cortex, which fits with recent functional imaging evidence relevant to awareness and time perception. The time base in this model is adaptive and emotional, and thus it offers an explanation for some aspects of the subjective nature of time perception. This model does not describe the mechanism of the time base, but it suggests a possible relationship with interoceptive afferent activity, such as heartbeat-related inputs.

scholarly journals The Varying Coherences of Implied Motion Modulates the Subjective Time Perception

2021 ◽  
Vol 12 ◽  
Author(s):  
Feiming Li ◽  
Lei Wang ◽  
Lei Jia ◽  
Jiahao Lu ◽  
Youping Wu ◽  
...  
Keyword(s):  
Time Perception ◽  
Subjective Experience ◽  
Subjective Time ◽  
Implied Motion ◽  
Experience Of Time ◽  
Standard Duration ◽  
Mediating Factor ◽  
Temporal Bisection Task ◽  
Coherence Level ◽  
Perceived Duration

Previous research has demonstrated that duration of implied motion (IM) was dilated, whereas hMT+ activity related to perceptual processes on IM stimuli could be modulated by their motion coherence. Based on these findings, the present study aimed to examine whether subjective time perception of IM stimuli would be influenced by varying coherence levels. A temporal bisection task was used to measure the subjective experience of time, in which photographic stimuli showing a human moving in four directions (left, right, toward, or away from the viewer) were presented as probe stimuli. The varying coherence of these IM stimuli was manipulated by changing the percentage of pictures implying movement in one direction. Participants were required to judge whether the duration of probe stimulus was more similar to the long or short pre-presented standard duration. As predicted, the point of subjective equality was significantly modulated by the varying coherence of the IM stimuli, but not for no-IM stimuli. This finding suggests that coherence level might be a key mediating factor for perceived duration of IM images, and top-down perceptual stream from inferred motion could influence subjective experience of time perception.

Cerebral Asymmetry in the Perceived Duration of Color Stimuli

1980 ◽  
Vol 50 (3_suppl) ◽  
pp. 1239-1246
Author(s):  
Sue A. Koch ◽  
Donald J. Polzella ◽  
Frank Da Polito
Keyword(s):  
Time Perception ◽  
Visual Information ◽  
Process Model ◽  
Visual Fields ◽  
Positive Function ◽  
Logarithmic Function ◽  
Cerebral Asymmetry ◽  
Left And Right ◽  
Hemispheric Control ◽  
Perceived Duration

20 right-handed males judged the duration of small and large colored circles, which were briefly exposed in the left, center, and right visual fields. Perceived duration was a logarithmic function of exposure duration and a positive function of size and chromaticity. Over-all accuracy was equivalent in the left and right visual fields, but the effects of chromaticity and duration on subjects' judgments were asymmetrical. These and other findings suggest a two-process model of time perception in which there is right hemispheric control over a visual information processor and left hemispheric control over a timer.

The Effect of Emotional Spoken Words on Time Perception Depends on the Gender of the Speaker

2018 ◽  
Vol 6 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Giovanna Mioni ◽  
Vincent Laflamme ◽  
Massimo Grassi ◽  
Simon Grondin
Keyword(s):  
Time Perception ◽  
Neutral Condition ◽  
Emotional Content ◽  
Female Voice ◽  
Lower Sensitivity ◽  
Male Voice ◽  
Bisection Task ◽  
Independent Variables ◽  
Weber Ratio ◽  
Perceived Duration

The aim of the present study was to investigate the influence of the emotional content of words marking brief intervals on the perceived duration of these intervals. Three independent variables were of interest: the gender of the person pronouncing the words, the gender of participants, and the valence (positive or negative) of the words in conjunction with their arousing properties. A bisection task was used and the tests, involving four different combinations of valence and arousing conditions (plus a neutral condition), were randomized within trials. The main results revealed that when the valence is negative, participants responded ‘short’ more often when words were pronounced by women rather than by men, and this effect occurred independently of the arousal condition. The results also revealed that overall, males responded ‘longer’more often than females. Finally, in the negative and low arousal condition, the Weber ratio was higher (lower sensitivity) when a male voice was used than when a female voice was used. This study shows that the gender of the person producing the stimuli whose duration is to be judged should be taken into account when analyzing the effect of emotion on time perception.

The Influence of Pitch on Time Perception in Short Melodies

1995 ◽  
Vol 12 (4) ◽  
pp. 379-386 ◽  
Author(s):  
Robert G. Crowder ◽  
Ian Neath
Keyword(s):  
Time Perception ◽  
Silent Interval ◽  
Experimental Task ◽  
Temporal Separation ◽  
Pitch Difference ◽  
Wide Gap ◽  
Perceived Duration

The pitch difference between tones defining the boundaries of a silent interval affects the perceived duration of that interval. In three replications of our experimental task, we found that when subjects compared the durations of the two silent intervals defined by a three- tone "melody," the tones were perceived as having a greater temporal separation if a wide gap in pitch separated the two tones than if a narrow pitch gap separated the tones, even when the objective timing was identical.

scholarly journals Synesthesia and music perception

2015 ◽  
Vol 9 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Guilherme Francisco F. Bragança ◽  
João Gabriel Marques Fonseca ◽  
Paulo Caramelli
Keyword(s):  
Music Perception ◽  
Present Review ◽  
Musical Meaning ◽  
Neural Basis ◽  
Developmental Factors ◽  
Physiological Processes ◽  
Musical Perception ◽  
The Cross

The present review examined the cross-modal association of sensations and their relationship to musical perception. Initially, the study focuses on synesthesia, its definition, incidence, forms, and genetic and developmental factors. The theories of the neural basis of synesthesia were also addressed by comparing theories emphasizing the anatomical aspect against others reinforcing the importance of physiological processes. Secondly, cross-modal sensory associations, their role in perception, and relationship to synesthesia were analyzed. We propose the existence of a lower, unconscious degree of synesthesia in non-synesthetes. This latent synesthesia (without explicit sensory manifestations) would be functional, aiding the construction of abstract associations between different perceptual fields. Musical meaning might be constructed largely by synesthetic processes, where the sensory associations from sound activate memories, images, and emotions.

scholarly journals Real-world structure facilitates the rapid emergence of scene category information in visual brain signals

2020 ◽  
Vol 124 (1) ◽  
pp. 145-151 ◽  
Author(s):  
Daniel Kaiser ◽  
Greta Häberle ◽  
Radoslaw M. Cichy
Keyword(s):  
Visual Processing ◽  
Natural Scenes ◽  
Eeg Signals ◽  
Category Information ◽  
Brain Signals ◽  
Early Visual Processing ◽  
Different Types ◽  
Types Of Information ◽  
Scene Content ◽  
Rapid Emergence

Natural scenes are structured, with different types of information appearing in predictable locations. Here, we use EEG decoding to show that the visual brain uses this structure to efficiently analyze scene content. During early visual processing, the category of a scene (e.g., a church vs. a supermarket) could be more accurately decoded from EEG signals when the scene adhered to its typical spatial structure compared with when it did not.

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