Predicting neural activity of whole body cast shadow through object cast shadow in dynamic environments
- Giannopulu, Irini, Lee, Khai, Abdi, Elahe, Noori-Hoshyar, Azadeh, Brotto, Gaelle, Van Velsen, Mathew, Lin, Tiffany, Gauchan, Priya, Gorman, Jazmin, Indelicato, Giuseppa
- Authors: Giannopulu, Irini , Lee, Khai , Abdi, Elahe , Noori-Hoshyar, Azadeh , Brotto, Gaelle , Van Velsen, Mathew , Lin, Tiffany , Gauchan, Priya , Gorman, Jazmin , Indelicato, Giuseppa
- Date: 2024
- Type: Text , Journal article
- Relation: Frontiers in Psychology Vol. 15, no. (2024), p.
- Full Text:
- Reviewed:
- Description: Shadows, as all other objects that surround us, are incorporated into the body and extend the body mediating perceptual information. The current study investigates the hypothesis according to which the perception of object shadows would predict the perception of body shadows. 38 participants (19 males and 19 females) aged 23 years on average were immersed into a virtual reality environment and instructed to perceive and indicate the coincidence or non coincidence between the movement of a ball shadow with regard to ball movement on the one hand, and between their body shadow and their body position in space on the other. Their brain activity was recording via a 32-channel EEG system, in which beta (13.5–30 Hz) oscillations were analyzed. A series of Multiple Regression Analysis (MRA) revealed that the beta dynamic oscillations patterns of the bilateral occipito-parieto-frontal pathway associated with the perception of ball shadow appeared to be a significant predictor of the increase in beta oscillations across frontal areas related to the body shadow perception and the decrease in beta oscillations across frontal areas connected to the decision making of the body shadow. Taken together, the findings suggest that inferential thinking ability relative to body shadow would be reliably predicted from object shadows and that the bilateral beta oscillatory modulations would be indicative of the formation of predictive neural frontal assemblies, which encode and infer body shadow neural representation, that is, a substitution of the physical body. Copyright © 2024 Giannopulu, Lee, Abdi, Noori-Hoshyar, Brotto, Van Velsen, Lin, Gauchan, Gorman and Indelicato.
- Authors: Giannopulu, Irini , Lee, Khai , Abdi, Elahe , Noori-Hoshyar, Azadeh , Brotto, Gaelle , Van Velsen, Mathew , Lin, Tiffany , Gauchan, Priya , Gorman, Jazmin , Indelicato, Giuseppa
- Date: 2024
- Type: Text , Journal article
- Relation: Frontiers in Psychology Vol. 15, no. (2024), p.
- Full Text:
- Reviewed:
- Description: Shadows, as all other objects that surround us, are incorporated into the body and extend the body mediating perceptual information. The current study investigates the hypothesis according to which the perception of object shadows would predict the perception of body shadows. 38 participants (19 males and 19 females) aged 23 years on average were immersed into a virtual reality environment and instructed to perceive and indicate the coincidence or non coincidence between the movement of a ball shadow with regard to ball movement on the one hand, and between their body shadow and their body position in space on the other. Their brain activity was recording via a 32-channel EEG system, in which beta (13.5–30 Hz) oscillations were analyzed. A series of Multiple Regression Analysis (MRA) revealed that the beta dynamic oscillations patterns of the bilateral occipito-parieto-frontal pathway associated with the perception of ball shadow appeared to be a significant predictor of the increase in beta oscillations across frontal areas related to the body shadow perception and the decrease in beta oscillations across frontal areas connected to the decision making of the body shadow. Taken together, the findings suggest that inferential thinking ability relative to body shadow would be reliably predicted from object shadows and that the bilateral beta oscillatory modulations would be indicative of the formation of predictive neural frontal assemblies, which encode and infer body shadow neural representation, that is, a substitution of the physical body. Copyright © 2024 Giannopulu, Lee, Abdi, Noori-Hoshyar, Brotto, Van Velsen, Lin, Gauchan, Gorman and Indelicato.
Temporal samples of visual information guides skilled interception
- Müller, Sean, Beseler, Bradley, Morris-Binelli, Khaya, Mesagno, Christopher
- Authors: Müller, Sean , Beseler, Bradley , Morris-Binelli, Khaya , Mesagno, Christopher
- Date: 2024
- Type: Text , Journal article
- Relation: Frontiers in Psychology Vol. 15, no. (2024), p.
- Full Text:
- Reviewed:
- Description: This study investigated whether performance of an interceptive skill requires an intact visual-perception-action cycle. Eleven skilled male Australian rules football athletes (Mage = 17.54, SD = 0.15) were recruited from an elite developmental pathway squad for a within-subject study. Participants were required to kick a ball directly at a goal from a 20-meter distance while wearing a pair of stroboscopic glasses. The glasses were used to create four vision conditions. Condition one kept intact the visual-perception-action cycle with uninterrupted vision of the motor skill. Three other conditions included stroboscopic vision that presented temporal samples of vision, which interrupted the perception-action cycle through progressive increases to intermittent vision occlusion of the motor skill. Goal kick error of ball position relative to a central target line within the goal and number of successful goals kicked were measured. Written report of internal and external focus of attention was also measured after each vision condition. Generalized estimating equation analysis did not reveal a significant decrement in kick target error, nor accuracy of goals scored, across normal to stroboscopic vision conditions. Performance was maintained despite a shift in attention focus from external to internal across normal to stroboscopic vision conditions. These findings have theoretical and practical implications for the visual regulation of skilled interceptive actions. Copyright © 2024 Müller, Beseler, Morris-Binelli and Mesagno.
- Authors: Müller, Sean , Beseler, Bradley , Morris-Binelli, Khaya , Mesagno, Christopher
- Date: 2024
- Type: Text , Journal article
- Relation: Frontiers in Psychology Vol. 15, no. (2024), p.
- Full Text:
- Reviewed:
- Description: This study investigated whether performance of an interceptive skill requires an intact visual-perception-action cycle. Eleven skilled male Australian rules football athletes (Mage = 17.54, SD = 0.15) were recruited from an elite developmental pathway squad for a within-subject study. Participants were required to kick a ball directly at a goal from a 20-meter distance while wearing a pair of stroboscopic glasses. The glasses were used to create four vision conditions. Condition one kept intact the visual-perception-action cycle with uninterrupted vision of the motor skill. Three other conditions included stroboscopic vision that presented temporal samples of vision, which interrupted the perception-action cycle through progressive increases to intermittent vision occlusion of the motor skill. Goal kick error of ball position relative to a central target line within the goal and number of successful goals kicked were measured. Written report of internal and external focus of attention was also measured after each vision condition. Generalized estimating equation analysis did not reveal a significant decrement in kick target error, nor accuracy of goals scored, across normal to stroboscopic vision conditions. Performance was maintained despite a shift in attention focus from external to internal across normal to stroboscopic vision conditions. These findings have theoretical and practical implications for the visual regulation of skilled interceptive actions. Copyright © 2024 Müller, Beseler, Morris-Binelli and Mesagno.
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