I-PerceptionPub Date : 2023-11-27eCollection Date: 2023-11-01DOI: 10.1177/20416695231214954
Mounia Ziat, Kayla Pacic, Ian Buentello, Joseph Varney, Fiona N Newell
{"title":"Tactile perception of randomness: Effect of varying stimulus size and participants age.","authors":"Mounia Ziat, Kayla Pacic, Ian Buentello, Joseph Varney, Fiona N Newell","doi":"10.1177/20416695231214954","DOIUrl":"10.1177/20416695231214954","url":null,"abstract":"<p><p>We investigated participants' ability to differentiate between random and organized two-dimensional tactile tiles with embossed dots and examined how this ability varies with size and participant age. Four experiments were conducted to evaluate the effect of these variations on participants' capacity to utilize touch in identifying which of two stimuli exhibited greater randomness. Participants were instructed to explore embossed tiles using both hands. The tiles had varying levels of randomness from organized to random sets. In Experiments 1, 2, and 4, the sets were of equal size, while in Experiment 3, they differed in size. Results revealed a significant difference between the random and organized sets, with random stimuli being more easily discernible. These findings suggest that touch can be utilized to discern random patterns on tactile maps or displays. However, older participants encountered difficulties making this distinction, indicating similarities between vision and touch in perceiving randomness.</p>","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"14 6","pages":"20416695231214954"},"PeriodicalIF":2.4,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10683403/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138463559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I-PerceptionPub Date : 2023-11-27eCollection Date: 2023-11-01DOI: 10.1177/20416695231214888
Souta Hidaka, Miyu Takeshima, Toshikazu Kawagoe
{"title":"No relationships between frequencies of mind-wandering and perceptual rivalry.","authors":"Souta Hidaka, Miyu Takeshima, Toshikazu Kawagoe","doi":"10.1177/20416695231214888","DOIUrl":"10.1177/20416695231214888","url":null,"abstract":"<p><p>Our minds frequently wander from a task at hand. This mind-wandering reflects fluctuations in our cognitive states. The phenomenon of perceptual rivalry, in which one of the mutually exclusive percepts automatically switches to an ambiguous sensory input, is also known as fluctuations in our perceptual states. There may be possible relationships between the mind-wandering and perceptual rivalry, given that physiological responses such as fluctuations in pupil diameter, which is an index of attentional/arousal states, are related to the occurrence of both phenomena. Here, we investigate possible relationships between mind-wandering and perceptual rivalry by combining experimental and questionnaire methods in an online research protocol. In Study 1, we found no statistically significant relationships between subjective mind-wandering tendencies measured by questionnaires and frequencies of perceptual rivalry for Necker-cube or structure-from-motion stimuli. Study 2 replicated the results of Study 1 and further confirmed no statistically significant relationships between behavioral measurements of mind-wandering tendencies estimated by sustained attention to response task and frequencies of perceptual rivalry. These findings suggest that mind-wandering and perceptual rivalry would be based on different mechanisms, possibly higher-level cognitive and lower-level perceptual ones.</p>","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"14 6","pages":"20416695231214888"},"PeriodicalIF":1.9,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10683402/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138463557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The effects of anxiety on taste perception: The role of awareness.","authors":"Naoya Zushi, Monica Perusquía-Hernández, Saho Ayabe-Kanamura","doi":"10.1177/20416695231216370","DOIUrl":"https://doi.org/10.1177/20416695231216370","url":null,"abstract":"<p><p>Prior research indicate that emotional states can alter taste perception, but the underlying mechanisms remain unclear. This study explores whether taste perception changes due to the mere evocation of emotions or the cognitive awareness of emotions. The first experiment investigated how anxiety affects taste perception when individuals are aware of their anxiety. Participants watched videos inducing relaxation or anxiety, then were divided into groups focusing on their emotions and those who did not, and the taste perception was measure. The second experiment investigated the influence of awareness directed toward emotions on taste evaluation, without manipulating emotional states. This focused on cognitive processing of taste through evaluations of visual stimuli. Results showed that sweetness perception is suppressed by the evocation of anxiety, whereas bitterness perception is enhanced only by anxiety with awareness. These findings indicate that the mechanisms by which emotional states affect taste perception may differ depending on taste quality.</p>","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"14 6","pages":"20416695231216370"},"PeriodicalIF":1.9,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10668578/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138463560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I-PerceptionPub Date : 2023-11-16eCollection Date: 2023-11-01DOI: 10.1177/20416695231215406
Nicholas J Wade, Patrick Hughes
{"title":"Reversing the eyes and reverse perspectives: Pseudoscopic amplification of reverspectives.","authors":"Nicholas J Wade, Patrick Hughes","doi":"10.1177/20416695231215406","DOIUrl":"https://doi.org/10.1177/20416695231215406","url":null,"abstract":"<p><p>Stereoscopic photographs of works in reverse perspective do not reveal their three-dimensional structure whereas pseudoscopic photographs enhance the apparent depth effects.</p>","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"14 6","pages":"20416695231215406"},"PeriodicalIF":1.9,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10656808/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138463558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I-PerceptionPub Date : 2023-11-14eCollection Date: 2023-11-01DOI: 10.1177/20416695231205365
Gregor U Hayn-Leichsenring, Dana G Rottleb
{"title":"Cupid stealing visual attention - the restoration of Vermeer's \"Girl Reading a Letter at an Open Window\" altered viewing behavior.","authors":"Gregor U Hayn-Leichsenring, Dana G Rottleb","doi":"10.1177/20416695231205365","DOIUrl":"https://doi.org/10.1177/20416695231205365","url":null,"abstract":"<p><p>A major restoration of Vermeer's \"Girl Reading a Letter at an Open Window\" revealed a painting of cupid on the back wall that had been overpainted. The uncovering of this painting within a painting changed the composition of the artwork. We performed an eye tracking study on digital representations of the painting to investigate how the restoration altered the way people perceive this artwork. We show that the painting of cupid draws visual attention from the letter and that viewing behavior depends on knowledge of the other version of the painting. Moreover, lay people prefer the version without cupid.</p>","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"14 6","pages":"20416695231205365"},"PeriodicalIF":1.9,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10652807/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138463556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I-PerceptionPub Date : 2023-11-14eCollection Date: 2023-11-01DOI: 10.1177/20416695231213213
Sarah Koch, Torsten Schubert, Sven Blankenberger
{"title":"The spatial representation of loudness in a timbre discrimination task.","authors":"Sarah Koch, Torsten Schubert, Sven Blankenberger","doi":"10.1177/20416695231213213","DOIUrl":"https://doi.org/10.1177/20416695231213213","url":null,"abstract":"<p><p>When participants decide whether a presented tone is loud or soft they react faster to loud tones with a top-sided response key in comparison to a bottom-sided response key and vice versa for soft tones. This effect is comparable to the well-established horizontal Spatial-Numerical Association of Response Codes (SNARC) effect and is often referred to as Spatial-Musical Association of Response Codes (SMARC) effect for loudness. The SMARC effect for loudness is typically explained by the assumption of a spatial representation or by the polarity correspondence principle. Crucially, both theories differ in the prediction of the SMARC effect when loudness is task-irrelevant. Therefore, we investigated whether the SMARC effect still occurs in a timbre discrimination task: Participants (<i>N</i> = 36) heard a single tone and classified its timbre with vertically arranged response keys. Additionally, the tone's loudness level varied in six levels. In case of a spatial representation, the SMARC effect should still occur while in case of polarity corresponding principle, the effect should be absent. Results showed that the SMARC effect was still present and that the differences between top-sided and bottom-sided responses were a linear function of loudness level indicating a continuous spatial representation of loudness.</p>","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"14 6","pages":"20416695231213213"},"PeriodicalIF":1.9,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10652803/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138463561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Temporal visuomotor synchrony induces embodiment towards an avatar with biomechanically impossible arm movements.","authors":"Harin Hapuarachchi, Hiroki Ishimoto, Michiteru Kitazaki, Maki Sugimoto, Masahiko Inami","doi":"10.1177/20416695231211699","DOIUrl":"https://doi.org/10.1177/20416695231211699","url":null,"abstract":"Visuomotor synchrony in time and space induces a sense of embodiment towards virtual bodies experienced in first-person view using Virtual Reality (VR). Here, we investigated whether temporal visuomotor synchrony affects avatar embodiment even when the movements of the virtual arms are spatially altered from those of the user in a non-human-like manner. In a within-subjects design VR experiment, participants performed a reaching task controlling an avatar whose lower arms bent in inversed and biomechanically impossible directions from the elbow joints. They performed the reaching task using this “unnatural avatar” as well as a “natural avatar,” whose arm movements and positions spatially matched the user. The reaching tasks were performed with and without a one second delay between the real and virtual movements. While the senses of body ownership and agency towards the unnatural avatar were significantly lower compared to those towards the natural avatar, temporal visuomotor synchrony did significantly increase the sense of embodiment towards the unnatural avatar as well as the natural avatar. These results suggest that temporal visuomotor synchrony is crucial for inducing embodiment even when the spatial match between the real and virtual limbs is disrupted with movements outside the pre-existing cognitive representations of the human body.","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"14 6","pages":"20416695231211699"},"PeriodicalIF":1.9,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10631331/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134650217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I-PerceptionPub Date : 2023-11-01DOI: 10.1177/20416695231214439
Michael Falconbridge, Robert L. Stamps, Mark Edwards, David R. Badcock
{"title":"Target motion misjudgments reflect a misperception of the background; revealed using continuous psychophysics","authors":"Michael Falconbridge, Robert L. Stamps, Mark Edwards, David R. Badcock","doi":"10.1177/20416695231214439","DOIUrl":"https://doi.org/10.1177/20416695231214439","url":null,"abstract":"Determining the velocities of target objects as we navigate complex environments is made more difficult by the fact that our own motion adds systematic motion signals to the visual scene. The flow-parsing hypothesis asserts that the background motion is subtracted from visual scenes in such cases as a way for the visual system to determine target motions relative to the scene. Here, we address the question of why backgrounds are only partially subtracted in lab settings. At the same time, we probe a much-neglected aspect of scene perception in flow-parsing studies, that is, the perception of the background itself. Here, we present results from three experienced psychophysical participants and one inexperienced participant who took part in three continuous psychophysics experiments. We show that, when the background optic flow pattern is composed of local elements whose motions are congruent with the global optic flow pattern, the incompleteness of the background subtraction can be entirely accounted for by a misperception of the background. When the local velocities comprising the background are randomly dispersed around the average global velocity, an additional factor is needed to explain the subtraction incompleteness. We show that a model where background perception is a result of the brain attempting to infer scene motion due to self-motion can account for these results.","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139305436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I-PerceptionPub Date : 2023-11-01DOI: 10.1177/20416695231215604
Isabelle Bülthoff, M. Breidt, H. Bülthoff, Daniel Kersten
{"title":"General lighting can overcome accidental viewing","authors":"Isabelle Bülthoff, M. Breidt, H. Bülthoff, Daniel Kersten","doi":"10.1177/20416695231215604","DOIUrl":"https://doi.org/10.1177/20416695231215604","url":null,"abstract":"When seeing an object in a scene, the presumption of seeing that object from a general viewpoint (as opposed to an accidental viewpoint) is a useful heuristic to decide which of many interpretations of this object is correct. Similar heuristic assumptions on illumination quality might also be used for scene interpretation. Here we tested that assumption and asked if illumination information helps determine object properties when seen from an accidental viewpoint. Test objects were placed on a flat surface and illumination was varied while keeping the objects’ images constant. Observers judged the shape or rigidity of static or moving simple objects presented in accidental view. They also chose which of two seemingly very similar faces was familiar. We found: (1) Objects might appear flat without shadow information but were perceived to be volumetric objects or non-planar in the presence of cast shadows. (2) Apparently non-rigid objects became rigid with shadow information. (3) Shading and shadows helped to infer which of two face was the familiar one. Previous results had shown that cast shadows help determine spatial layout of objects. Our study shows that other properties of objects like rigidity or 3D-shape can be disambiguated by shadow information.","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"194 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139305832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I-PerceptionPub Date : 2023-11-01DOI: 10.1177/20416695231214440
Michael Falconbridge, Robert L. Stamps, Mark Edwards, David R. Badcock
{"title":"Continuous psychophysics for two-variable experiments; A new “Bayesian participant” approach","authors":"Michael Falconbridge, Robert L. Stamps, Mark Edwards, David R. Badcock","doi":"10.1177/20416695231214440","DOIUrl":"https://doi.org/10.1177/20416695231214440","url":null,"abstract":"Interest in continuous psychophysical approaches as a means of collecting data quickly under natural conditions is growing. Such approaches require stimuli to be changed randomly on a continuous basis so that participants can not guess future stimulus states. Participants are generally tasked with responding continuously using a continuum of response options. These features introduce variability in the data that is not present in traditional trial-based experiments. Given the unique weaknesses and strengths of continuous psychophysical approaches, we propose that they are well suited to quickly mapping out relationships between above-threshold stimulus variables such as the perceived direction of a moving target as a function of the direction of the background against which the target is moving. We show that modelling the participant in such a two-variable experiment using a novel “Bayesian Participant” model facilitates the conversion of the noisy continuous data into a less-noisy form that resembles data from an equivalent trial-based experiment. We also show that adaptation can result from longer-than-usual stimulus exposure times during continuous experiments, even to features that the participant is not aware of. Methods for mitigating the effects of adaptation are discussed.","PeriodicalId":47194,"journal":{"name":"I-Perception","volume":"7 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139292302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}