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Hope TMH, Halai A, Crinion J, Castelli P, Price CJ, Bowman H. Principal component analysis-based latent-space dimensionality under-estimation, with uncorrelated latent variables. Brain 2024; 147:e14-e16. [PMID: 37831657 PMCID: PMC10834232 DOI: 10.1093/brain/awad355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 09/15/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023] Open
Affiliation(s)
- Thomas M H Hope
- Wellcome Centre for Human Neuroimaging, Department of Imaging Neuroscience, Institute of Neurology, University College London, London, WC1N 3AR, UK
- Department of Psychological and Social Sciences, John Cabot University, 00165 Rome, Italy
| | - Ajay Halai
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge CB2 7EF, UK
| | - Jenny Crinion
- Institute of Cognitive Science, Department of Experimental Psychology, University College London, London, WC1N 3AR, UK
| | - Paola Castelli
- Department of Psychological and Social Sciences, John Cabot University, 00165 Rome, Italy
| | - Cathy J Price
- Wellcome Centre for Human Neuroimaging, Department of Imaging Neuroscience, Institute of Neurology, University College London, London, WC1N 3AR, UK
| | - Howard Bowman
- School of Psychology, University of Birmingham, Birmingham B15 2TT, UK
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Pini L, Bisogno AL, Salvalaggio A, Shulman GL, Corbetta M. The correlation of behavioural deficits post-stroke: a trivial issue? Brain 2023; 146:e83-e85. [PMID: 37226212 DOI: 10.1093/brain/awad173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/06/2023] [Indexed: 05/26/2023] Open
Affiliation(s)
- Lorenzo Pini
- Padova Neuroscience Center, University of Padova, 35131 Padova, Italy
- Veneto Institute of Molecular Medicine, VIMM, 35129 Padova, Italy
| | | | - Alessandro Salvalaggio
- Padova Neuroscience Center, University of Padova, 35131 Padova, Italy
- Department of Neuroscience, University of Padova, 35131 Padova, Italy
| | - Gordon L Shulman
- Department of Neurology, Washington University in Saint Louis, St Louis, MO 63110, USA
- Department of Radiology, Washington University in Saint Louis, St Louis, MO 63110, USA
| | - Maurizio Corbetta
- Padova Neuroscience Center, University of Padova, 35131 Padova, Italy
- Veneto Institute of Molecular Medicine, VIMM, 35129 Padova, Italy
- Department of Neuroscience, University of Padova, 35131 Padova, Italy
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Sperber C, Gallucci L, Umarova R. Reply: The correlation of behavioural deficits post-stroke: a trivial issue? Brain 2023; 146:e86-e88. [PMID: 37224518 DOI: 10.1093/brain/awad174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 05/06/2023] [Indexed: 05/26/2023] Open
Affiliation(s)
- Christoph Sperber
- Department of Neurology, Inselspital, University Hospital Bern, University of Bern, 3010 Bern, Switzerland
| | - Laura Gallucci
- Department of Neurology, Inselspital, University Hospital Bern, University of Bern, 3010 Bern, Switzerland
| | - Roza Umarova
- Department of Neurology, Inselspital, University Hospital Bern, University of Bern, 3010 Bern, Switzerland
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Facchini S, Favaretto C, Castellaro M, Zangrossi A, Zannin M, Bisogno AL, Baro V, Anglani MG, Vallesi A, Baracchini C, D'Avella D, Della Puppa A, Semenza C, Corbetta M. A common low dimensional structure of cognitive impairment in stroke and brain tumors. Neuroimage Clin 2023; 40:103518. [PMID: 37778195 PMCID: PMC10562193 DOI: 10.1016/j.nicl.2023.103518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
INTRODUCTION Neuropsychological studies infer brain-behavior relationships from focal lesions like stroke and tumors. However, these pathologies impair brain function through different mechanisms even when they occur at the same brain's location. The aim of this study was to compare the profile of cognitive impairment in patients with brain tumors vs. stroke and examine the correlation with lesion location in each pathology. METHODS Patients with first time stroke (n = 77) or newly diagnosed brain tumors (n = 76) were assessed with a neuropsychological battery. Their lesions were mapped with MRI scans. Test scores were analyzed using principal component analysis (PCA) to measure their correlation, and logistic regression to examine differences between pathologies. Next, with ridge regression we examined whether lesion features (location, volume) were associated with behavioral performance. RESULTS The PCA showed a similar cognitive impairment profile in tumors and strokes with three principal components (PCs) accounting for about half of the individual variance. PC1 loaded on language, verbal memory, and executive/working memory; PC2 loaded on general performance, visuo-spatial attention and memory, and executive functions; and, PC3 loaded on calculation, reading and visuo-spatial attention. The average lesion distribution was different, and lesion location was correlated with cognitive deficits only in stroke. Logistic regression found language and calculation more affected in stroke, and verbal memory and verbal fluency more affected in tumors. CONCLUSIONS A similar low dimensional set of behavioral impairments was found both in stroke and brain tumors, even though each pathology caused some specific deficits in different domains. The lesion distribution was different for stroke and tumors and correlated with behavioral impairment only in stroke.
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Affiliation(s)
- Silvia Facchini
- Clinica Neurologica, Azienda Ospedale Università Padova, and Department of Neuroscience, University of Padua, Italy
| | | | - Marco Castellaro
- Department of Information Engineering, University of Padua, Italy
| | | | - Margherita Zannin
- Clinica Neurologica, Azienda Ospedale Università Padova, and Department of Neuroscience, University of Padua, Italy
| | - Antonio Luigi Bisogno
- Clinica Neurologica, Azienda Ospedale Università Padova, and Department of Neuroscience, University of Padua, Italy
| | - Valentina Baro
- Paediatric and Functional Neurosurgery Unit, Azienda Ospedale Università Padova, and Department of Neuroscience, University of Padua, Italy
| | | | - Antonio Vallesi
- Clinica Neurologica, Azienda Ospedale Università Padova, and Department of Neuroscience, University of Padua, Italy; Padova Neuroscience Center (PNC), University of Padua, Italy
| | - Claudio Baracchini
- Stroke Unit and Neurosonology Laboratory, Azienda Ospedale Università Padova, Padua, Italy
| | - Domenico D'Avella
- Paediatric and Functional Neurosurgery Unit, Azienda Ospedale Università Padova, and Department of Neuroscience, University of Padua, Italy
| | - Alessandro Della Puppa
- Neurosurgery Unit, Department of Neuroscience, Psychology, Pharmacology and Child Health, Careggi University Hospital and University of Florence, Italy
| | - Carlo Semenza
- Clinica Neurologica, Azienda Ospedale Università Padova, and Department of Neuroscience, University of Padua, Italy; Padova Neuroscience Center (PNC), University of Padua, Italy
| | - Maurizio Corbetta
- Clinica Neurologica, Azienda Ospedale Università Padova, and Department of Neuroscience, University of Padua, Italy; Padova Neuroscience Center (PNC), University of Padua, Italy; Venetian Institute of Molecular Medicine, VIMM, Padua, Italy.
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Saur D. Predicting behavioural outcomes after stroke: from computational challenge towards individualized rehabilitation? Brain 2023; 146:1729-1730. [PMID: 37082859 DOI: 10.1093/brain/awad119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023] Open
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