Alexander Holmes

ORCID: 0009-0009-7012-6753
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Functional Brain Connectivity Studies
  • Advanced Neuroimaging Techniques and Applications
  • Mental Health Research Topics
  • Health, Environment, Cognitive Aging
  • Energy, Environment, and Transportation Policies
  • Neural dynamics and brain function
  • Bioinformatics and Genomic Networks
  • Advanced Statistical Methods and Models
  • Statistical Methods and Bayesian Inference
  • Statistical Methods in Clinical Trials
  • Cancer Genomics and Diagnostics
  • Economics of Agriculture and Food Markets
  • Schizophrenia research and treatment
  • Advanced Causal Inference Techniques
  • Energy, Environment, Economic Growth
  • Statistical Distribution Estimation and Applications
  • Neurobiology and Insect Physiology Research
  • Market Dynamics and Volatility
  • Developmental Biology and Gene Regulation
  • Engineering Diagnostics and Reliability
  • Probability and Risk Models
  • Circadian rhythm and melatonin
  • Bayesian Modeling and Causal Inference
  • Multiple Sclerosis Research Studies
  • Insect symbiosis and bacterial influences

Australian Regenerative Medicine Institute
2024-2025

Monash University
2022-2025

Rutgers, The State University of New Jersey
2024

Wellcome Sanger Institute
2023-2024

Rutgers Sexual and Reproductive Health and Rights
2024

Bridge University
2023

University of Cambridge
2023

Yale University
2014-2023

Allen Institute for Brain Science
2023

The University of Adelaide
2017-2019

Abstract The Catalogue Of Somatic Mutations In Cancer (COSMIC), https://cancer.sanger.ac.uk/cosmic, is an expert-curated knowledgebase providing data on somatic variants in cancer, supported by a comprehensive suite of tools for interpreting genomic data, discerning the impact alterations disease, and facilitating translational research. catalogue accessed used thousands cancer researchers clinicians daily, allowing them to quickly access information from immense pool curated over 29...

10.1093/nar/gkad986 article EN cc-by Nucleic Acids Research 2023-11-01

Abstract With increasing globalisation and interactions between cultures, countries are converging in many ways, including their consumption patterns. The extent to which this has been the case alcohol subject of previous studies, but those studies have limited scope a specific region or group high-income just one two types alcohol. present study updates earlier findings, covers all world since 1961, introduces new summary indicators capture additional dimensions convergence total its mix...

10.1017/jwe.2017.15 article EN Journal of Wine Economics 2017-05-01

A primary aim of computational psychiatry is to establish predictive models linking individual differences in brain functioning with symptoms. In particular, cognitive impairments are transdiagnostic, treatment resistant, and associated poor outcomes. Recent work suggests that thousands participants may be necessary for the accurate reliable prediction cognition, questioning utility most patient collection efforts. Here, using a transfer learning framework, we train model on functional...

10.1126/sciadv.adn1862 article EN cc-by-nc Science Advances 2024-11-06

The cerebral cortex is organized hierarchically along an axis that spans unimodal sensorimotor to transmodal association areas. This hierarchy often characterized using low-dimensional embeddings, termed gradients, of interregional functional coupling estimates measured with resting-state magnetic resonance imaging. Such analyses may offer insights into the pathophysiology schizophrenia, which has been frequently linked dysfunctional interactions between and

10.1016/j.bpsc.2023.08.008 article EN cc-by Biological Psychiatry Cognitive Neuroscience and Neuroimaging 2023-09-06

The mammalian brain is comprised of anatomically and functionally distinct regions. Substantial work over the past century has pursued generation ever-more accurate maps regional boundaries, using either expert judgement or data-driven clustering functional, connectional, and/or architectonic properties. However, these approaches are often purely descriptive, have limited generalizability, do not elucidate underlying generative mechanisms that shape organization brain. Here, we develop a...

10.1101/2025.01.30.635820 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2025-02-01

Reading involves dual streams of sensory propagation that lie within a broader sensory-to-transmodal hierarchy. This study explores whether individual differences in this functional organization can be explained by cortical geometry. Through modified connectome predictive modeling approach, we identified distances (CD) measured along the surface predict reading performance. We found interindividual variation CD robustly predicts performance comparably to connectivity (FC). Moreover,...

10.1101/2025.03.10.641861 preprint EN cc-by-nc bioRxiv (Cold Spring Harbor Laboratory) 2025-03-11

Converging neuroimaging, genetic, and post-mortem evidence show a fundamental role of synaptic deficits in schizophrenia pathogenesis. However, the underlying molecular cellular mechanisms that drive onset progression pathology remain to be established. Here, we used density positron emission tomography (PET) imaging using [11C]UCB-J radiotracer reveal prominent widespread pattern (p_FWE<0.05) lower individuals with (n=29), compared large sample healthy controls (n=93). We found spatial is...

10.1101/2025.03.22.25324465 preprint EN cc-by-nc medRxiv (Cold Spring Harbor Laboratory) 2025-03-23

Background Clinical outcomes following a first episode of psychosis (FEP) are highly heterogeneous between patients. The identification prognostic biomarkers would greatly facilitate personalized treatments. Psychosis patients often display brain-wide disruptions inter-regional functional coupling (FC), with some being linked to symptom severity and remission. FC may thus hold potential for people experiencing psychosis. Methods Ninety antipsychotic-naive FEP (51% female, 15-25 years) were...

10.1101/2025.04.01.25325005 preprint EN cc-by-nc-nd 2025-04-03

Functional magnetic resonance imaging (fMRI) is widely used to investigate functional coupling (FC) disturbances in a range of clinical disorders. Most analyses performed date have group-based parcellations for defining regions interest (ROIs), which single parcellation applied each brain. This approach neglects individual differences brain organization and may inaccurately delineate the true borders regions. These inaccuracies could inflate or underestimate group case-control analyses. We...

10.1162/netn_a_00329 article EN cc-by Network Neuroscience 2023-01-01

Parkinson's disease (PD), the second most prevalent neurodegenerative after Alzheimer's disease, is linked to gradual loss of dopaminergic neurons in substantia nigra. Disease loci causing hereditary forms PD are known, but cases attributable a combination genetic and environmental risk factors. Increased incidence associated with rural living pesticide exposure, neurodegeneration can be triggered by neurotoxins such as 6-hydroxydopamine (6-OHDA). In C. elegans, this drug taken up...

10.1371/journal.pgen.1004767 article EN cc-by PLoS Genetics 2014-12-04

Despite decades of research, we lack objective diagnostic or prognostic biomarkers mental health problems. A key reason for this limited progress is a reliance on the traditional case-control paradigm, which assumes that each disorder has single cause can be uncovered by comparing average phenotypic values cases and control samples. Here, discuss problematic assumptions paradigm based highlight recent efforts seek to characterize, rather than minimize, inherent clinical biological...

10.31219/osf.io/5mz46 preprint EN 2024-06-25

Psychosis has often been linked to abnormal cortical asymmetry, but prior results have inconsistent. Here, we applied a novel spectral shape analysis characterize asymmetries in patients with early psychosis across different spatial scales. We used the Human Connectome Project for Early dataset (aged 16-35), comprising 56 healthy controls (37 males, 19 females) and 112 (68 44 females). quantified variations of each hemisphere over frequencies general linear model compare differences between...

10.1093/braincomms/fcae015 article EN cc-by Brain Communications 2023-12-28

Trunk neural crest cells follow a common ventral migratory pathway but are distributed into two distinct locations to form discrete sympathetic and dorsal root ganglia along the vertebrate axis. Although fluorescent cell labeling time-lapse studies have recorded complex trunk behaviors, signals that underlie this dynamic patterning remain unclear. The absence of molecular information has led number mechanistic hypotheses for migration. Here, we review recent data in support three mechanisms...

10.1002/dvg.23239 article EN genesis 2018-08-21

Abstract Importance Psychotic illness is associated with anatomically distributed grey matter reductions that can worsen progression, but the mechanisms underlying specific spatial patterning of these changes unknown. Objective To test hypothesis brain network architecture constrains cross-sectional and longitudinal alterations across different stages psychotic to identify whether certain regions act as putative epicentres from which volume loss spreads. Design, Settings, Participants This...

10.1101/2022.01.11.22268989 preprint EN cc-by-nc-nd medRxiv (Cold Spring Harbor Laboratory) 2022-01-12

Abstract Functional magnetic resonance imaging (fMRI) is widely used to investigate functional coupling (FC) disturbances in a range of clinical disorders. Most analyses performed date have group-based parcellations for defining regions interest (ROIs), which single parcellation applied each brain. This approach neglects individual differences brain organization and may inaccurately delineate the true borders regions. These inaccuracies could inflate or under-estimate group case-control...

10.1101/2023.01.03.23284124 preprint EN medRxiv (Cold Spring Harbor Laboratory) 2023-01-05

Abstract Background The cerebral cortex is organised hierarchically along an axis that spans unimodal sensorimotor to transmodal association areas. This hierarchy often characterised using low-dimensional embeddings, termed gradients, of inter-regional functional coupling estimates measured with resting-state magnetic resonance imaging (fMRI). Such analyses may offer insights into the pathophysiology schizophrenia, which frequently linked dysfunctional interactions between and Methods To...

10.1101/2023.05.02.23289376 preprint EN medRxiv (Cold Spring Harbor Laboratory) 2023-05-02
Coming Soon ...