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Hearing in categories and speech perception at the "cocktail party".
PLoS One
January 2025
School of Communication Sciences & Disorders, University of Memphis, Memphis, Tennessee, United States of America.
We aimed to test whether hearing speech in phonetic categories (as opposed to a continuous/gradient fashion) affords benefits to "cocktail party" speech perception. We measured speech perception performance (recognition, localization, and source monitoring) in a simulated 3D cocktail party environment. We manipulated task difficulty by varying the number of additional maskers presented at other spatial locations in the horizontal soundfield (1-4 talkers) and via forward vs.
View Article and Find Full Text PDFStudy Protocol for 'PsilOCD: A Pharmacological Challenge Study Evaluating the Effects of the 5-HT2A Agonist Psilocybin on the Neurocognitive and Clinical Correlates of Compulsivity'.
Cureus
January 2025
Department of Brain Sciences, Faculty of Medicine, Imperial College London, London, GBR.
Background: Obsessive-compulsive disorder (OCD) is a complex condition marked by persistent distressing thoughts and repetitive behaviours. Despite its prevalence, the mechanisms behind OCD remain elusive, and current treatments are limited. This protocol outlines an investigative study for individuals with OCD, exploring the potential of psilocybin to improve key components of cognition implicated in the disorder.
View Article and Find Full Text PDFEntrainment of visuomotor responses to target speed during interception.
Neuroscience
January 2025
Departamento de Ciencias Médicas y de la Vida, Centro Universitario de la Ciénega, Universidad de Guadalajara, Ocotlán, Mexico; Laboratorio de Conducta Animal, Departamento de Psicología, Centro Universitario de la Ciénega, Universidad de Guadalajara, Ocotlán, Mexico.
Motor actions adapt dynamically to external changes through the brain's ability to predict sensory outcomes and adjust for discrepancies between anticipated and actual sensory inputs. In this study, we investigated how changes in target speed (v) and direction influenced visuomotor responses, focusing on gaze and manual joystick control during an interception task. Participants tracked a moving target with sinusoidal variations in v and directional changes, generating sensory prediction errors and requiring real-time adjustments.
View Article and Find Full Text PDFNumber 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 PDFColoured overlays improve reading speed and reading experience in patients with post-COVID-19 syndrome.
Vision Res
January 2025
Department of Clinical Neuroscience, Division of Eye and Vision, Karolinska Institute, St Erik Eye Hospital, Eugeniavägen 12 SE 171 64, Stockholm, Sweden. Electronic address:
High prevalences of visual dysfunction and reading-related symptoms have been found in patients with rehabilitation needs after COVID-19 infection. The purpose of this study was to study the effects of coloured overlays on reading speed and reading experience. Twenty-nine patients (45.
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