Claire O’Callaghan

Seeing through the Static: Reduced Imagery Vividness in Aphantasia is Associated with Impaired Temporal Lobe Signal Complexity

The paper investigates aphantasia by analyzing fMRI data, finding reduced spatial signal complexity in temporal lobes during imagery compared to perception in aphantasics.

Compositional Recombination Relies on a Distributed Cortico-Cerebellar Network

The paper uses fMRI and recurrent neural networks to show that compositional cognition involves specialized cortical regions for components and a distributed cortico-cerebellar network for recombination.

Cerebellar and Subcortical Contributions to Working Memory Manipulation

The paper investigates the role of cerebellar and subcortical regions in working memory manipulation using fMRI during a mental rotation task, finding increased BOLD activity and delayed responses in these areas with larger rotation angles.

An in vivo Probabilistic Atlas of the Human Locus Coeruleus at Ultra-high Field

This study creates a probabilistic atlas of the human locus coeruleus using ultra-high field MRI, revealing spatial gradients and providing a resource for future research.

Mind-wandering in Parkinson’s disease hallucinations reflects primary visual and default network coupling

This study finds that Parkinson’s disease patients with visual hallucinations show increased mind-wandering and stronger coupling between the primary visual cortex and default network.

Hippocampal atrophy and intrinsic brain network dysfunction relate to alterations in mind wandering in neurodegeneration

This study examines mind wandering in neurodegenerative disorders, finding reduced capacity in bvFTD and subtle shifts in AD, linked to brain structural and functional changes.

Meta-analytic evidence for the plurality of mechanisms in transdiagnostic structural MRI studies of hallucination status

This paper identifies distinct neuroanatomical patterns of gray matter changes associated with hallucination status in psychiatric versus neurodegenerative disorders through meta-analyses and systematic reviews.

Dopamine Depletion Alters Macroscopic Network Dynamics in Parkinsons Disease

This study examines how dopamine depletion affects large-scale brain network dynamics in Parkinson's disease by comparing network integration in patients On and Off dopamine therapy with healthy controls.

Changes in structural network topology correlate with severity of hallucinatory behaviour in Parkinson’s disease

The paper investigates how structural network topology changes correlate with hallucinatory behavior severity in Parkinson’s disease using graph theory and connectivity analysis.

Accumulation of sensory evidence is impaired in Parkinson’s disease with visual hallucinations

This study uses a hierarchical drift diffusion model to show that Parkinson’s disease patients with visual hallucinations have slower sensory evidence accumulation, suggesting impaired bottom-up processing and increased reliance on top-down influences.