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Number is more than meets the eye: Unveiling segmentation mechanisms in numerosity perception with visual illusions.
Vision Res
January 2025
Laboratoire Cognition Langage et Développement, Université Libre de Bruxelles, Belgium.
Animals and humans possess an adaptive ability to rapidly estimate approximate numerosity, yet the visual mechanisms underlying this process remain poorly understood. Evidence suggests that approximate numerosity relies on segmented perceptual units modulated by grouping cues, with perceived numerosity decreasing when objects are connected by irrelevant lines, independent of low-level features. However, most studies have focused on physical objects.
View Article and Find Full Text PDFExploring specific alterations at the explicit and perceptual levels in sense of ownership, agency, and body schema in Functional Motor Disorder: A pilot comparative study with Irritable Bowel Syndrome.
Cortex
January 2025
"Aldo Ravelli" Research Center for Neurotechnology and Experimental Brain Therapeutics, Università degli Studi di Milano, Milano, Italy; Unità di Psichiatria, Milano, Italy.
Functional Motor Disorders (FMD) consists in symptoms of altered motor function not attributable to typical neurological and medical conditions. This study aimed to explore explicit and perceptual measures of Sense of Ownership, Agency, and Body Schema in FMD patients, and assess whether these alterations are specific to FMD or shared with other functional disturbances. Twelve FMD patients, ten with Irritable Bowel Syndrome (IBS, a functional gastrointestinal disorder) and fifteen healthy controls (HC) underwent: (i) the Mirror Box Illusion (MBI), requiring participants to perform tapping movements with their dominant hand concealed from sight, while visual feedback was provided by an alien hand under visuo-motor congruency or incongruency conditions; (ii) a Forearm Bisection Task before and after exposure to the MBI, and the Embodiment Questionnaire after the MBI, as perceptual and explicit indices of the embodiment illusion, respectively.
View Article and Find Full Text PDFMoral injury in treatment-seeking police officers: A qualitative study.
Psychol Trauma
January 2025
ARQ Centrum'45, ARQ National Psychotrauma Centre.
Objective: In their work, police officers are routinely exposed to potentially traumatic events, some of which may also be morally distressing. Moral injury refers to the multidimensional impact of exposure to such potentially morally injurious events (PMIEs). Mainly originating from a military context, there is little empirical research on moral injury in policing.
View Article and Find Full Text PDFA neurocomputational account of multi-line electronic gambling machines.
Trends Cogn Sci
January 2025
Department of Psychology, Biological Psychology, University of Cologne, Cologne, Germany. Electronic address:
Multi-line electronic gambling machines (EGMs) are strongly associated with problem gambling. Dopamine (DA) plays a central role in substance-use disorders, which share clinical and behavioral features with disordered gambling. The structural design features of multi-line EGMs likely lead to the elicitation of various dopaminergic effects within their nested anticipation-outcome structure.
View Article and Find Full Text PDFDeceptive illusory cues can influence orthogonally directed manual length estimations.
Atten Percept Psychophys
January 2025
School of Kinesiology, Louisiana State University, 1250 Huey P. Long Field House, 50 Field House Drive, Baton Rouge, LA, 70803, USA.
We examined participants' abilities to manually estimate one of two perpendicular line segment lengths using curved point-to-point movements. Configurations involved symmetrical, unsymmetrical, and no bisection in upright and rotated orientation alterations to vertical-horizontal (V-H) illusions, where people often perceive longer vertical than horizontal segments for equal segment lengths. Participants used two orthogonally directed movements for length estimations: positively proportional (POS) - where greater fingertip displacement involved longer length estimation between configuration intersection start position and fingertip end, and negatively proportional (NEG) - where greater fingertip displacement from the screen edge start position toward configuration intersection involved a shorter length estimation between configuration intersection and fingertip end.
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