1
|
Bonnet C, Poulin-Charronnat B, Michel-Colent C. Aftereffects of visuomanual prism adaptation in auditory modality: Review and perspectives. Neurosci Biobehav Rev 2024; 164:105814. [PMID: 39032842 DOI: 10.1016/j.neubiorev.2024.105814] [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: 09/15/2023] [Revised: 06/20/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
Visuomanual prism adaptation (PA), which consists of pointing to visual targets while wearing prisms that shift the visual field, is one of the oldest experimental paradigms used to investigate sensorimotor plasticity. Since the 2000's, a growing scientific interest emerged for the expansion of PA to cognitive functions in several sensory modalities. The present work focused on the aftereffects of PA within the auditory modality. Recent studies showed changes in mental representation of auditory frequencies and a shift of divided auditory attention following PA. Moreover, one study demonstrated benefits of PA in a patient suffering from tinnitus. According to these results, we tried to shed light on the following question: How could this be possible to modulate audition by inducing sensorimotor plasticity with glasses? Based on the literature, we suggest a bottom-up attentional mechanism involving cerebellar, parietal, and temporal structures to explain crossmodal aftereffects of PA. This review opens promising new avenues of research about aftereffects of PA in audition and its implication in the therapeutic field of auditory troubles.
Collapse
Affiliation(s)
- Clémence Bonnet
- LEAD - CNRS UMR5022, Université de Bourgogne, Pôle AAFE, 11 Esplanade Erasme, Dijon 21000, France.
| | | | - Carine Michel-Colent
- CAPS, Inserm U1093, Université de Bourgogne, UFR des Sciences du Sport, Dijon F-21000, France
| |
Collapse
|
2
|
Terruzzi S, Albini F, Massetti G, Etzi R, Gallace A, Vallar G. The Neuropsychological Assessment of Unilateral Spatial Neglect Through Computerized and Virtual Reality Tools: A Scoping Review. Neuropsychol Rev 2024; 34:363-401. [PMID: 36913099 PMCID: PMC10009867 DOI: 10.1007/s11065-023-09586-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 09/28/2022] [Indexed: 03/14/2023]
Abstract
Unilateral Spatial Neglect is a disabling neuropsychological deficit. Patients with spatial neglect fail to detect and report events, and to perform actions in the side of space contralateral to a hemispheric cerebral lesion. Neglect is assessed by evaluating the patients' abilities in daily life activities and by psychometric tests. Computer-based, portable and Virtual Reality technologies may provide more and precise data, and be more sensitive and informative, compared to current paper-and-pencil procedures. Studies since 2010, in which such technologies have been used, are reviewed. Forty-two articles meeting inclusion criteria are categorized according to their technological approaches (computer-, graphics tablet or tablet-, virtual reality-based assessment, and other). The results are promising. However, a definite golden standard, technologically based procedure cannot be still established. Developing technologically based tests is a laborious process, which requires technical and user experience improvements as well as normative data, to increase the evidence of efficacy for clinical evaluation of at least some of the tests considered in this review.
Collapse
Affiliation(s)
- Stefano Terruzzi
- Department of Psychology, University of Milano-Bicocca, Piazza dell'Ateneo Nuovo 1, Milan, 20126, Italy.
- Mind and Behavior Technological Center, University of Milano-Bicocca, Milan, Italy.
- Neurocognitive Rehabilitation Center (CeRiN), University of Trento, Rovereto, Italy.
| | - Federica Albini
- Department of Psychology, University of Milano-Bicocca, Piazza dell'Ateneo Nuovo 1, Milan, 20126, Italy
- Mind and Behavior Technological Center, University of Milano-Bicocca, Milan, Italy
| | - Gemma Massetti
- Mind and Behavior Technological Center, University of Milano-Bicocca, Milan, Italy
- School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Roberta Etzi
- Mind and Behavior Technological Center, University of Milano-Bicocca, Milan, Italy
| | - Alberto Gallace
- Department of Psychology, University of Milano-Bicocca, Piazza dell'Ateneo Nuovo 1, Milan, 20126, Italy
- Mind and Behavior Technological Center, University of Milano-Bicocca, Milan, Italy
| | - Giuseppe Vallar
- Department of Psychology, University of Milano-Bicocca, Piazza dell'Ateneo Nuovo 1, Milan, 20126, Italy.
- Mind and Behavior Technological Center, University of Milano-Bicocca, Milan, Italy.
- Neuropsychological Laboratory, Istituto di Ricovero e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy.
| |
Collapse
|
3
|
Karataş L, Utkan Karasu A, Karataş GK. The effect of offline anosognosia for hemispatial neglect on neglect rehabilitation in patients with subacute and chronic right hemispheric brain injury. A retrospective cohort study. Neuropsychol Rehabil 2024; 34:453-468. [PMID: 37073753 DOI: 10.1080/09602011.2023.2202862] [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: 08/01/2022] [Accepted: 04/06/2023] [Indexed: 04/20/2023]
Abstract
CLINICAL TRIALS REGISTRATION NUMBER NCT05145855.
Collapse
Affiliation(s)
- Levent Karataş
- Department of Physical Medicine and Rehabilitation, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Ayça Utkan Karasu
- Department of Physical Medicine and Rehabilitation, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Gülçin Kaymak Karataş
- Department of Physical Medicine and Rehabilitation, Gazi University Faculty of Medicine, Ankara, Turkey
| |
Collapse
|
4
|
Moretta P, Cavallo ND, Fonzo E, Maiorino A, Ferrante C, Ambrosino P, Femiano C, Santangelo G, Marcuccio L. Visual vertical neglect in acquired brain injury: a systematic review. Front Psychol 2024; 15:1360057. [PMID: 38529094 PMCID: PMC10962212 DOI: 10.3389/fpsyg.2024.1360057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/28/2024] [Indexed: 03/27/2024] Open
Abstract
Vertical neglect represents a visuospatial deficit occurring as a possible consequence of acquired brain injury (ABI). Differently from unilateral spatial neglect on horizontal space, vertical neglect is poorly studied in the literature and rarely assessed in clinical practice. In the available studies, the terms "radial," "vertical," and "altitudinal" neglect are often used interchangeably, although they do not describe the same spatial dimension. "Altitudinal" and "vertical" refer to the sagittal plane, whereas "radial" refers to the transverse plane. The term "vertical" is sometimes used interchangeably with respect to both axes. The aim of this systematic review was to identify the main characteristics of vertical neglect after ABI, the diagnostic tools used, and the treatment options. We also proposed a clarification of the manifestations and characteristics of vertical and radial neglect. The 23 articles reviewed, showed that the vertical neglect occurred more frequently on the lower space than on the upper space, that its presence was associated with horizontal neglect, and that it could also occur with compromise of the radial space, with the near radial being more common. The most frequent etiology associated with vertical neglect is vascular, particularly ischaemic. The lesions side are very heterogeneous and include both cortical and subcortical areas and all lobes, although the temporal lobe is most affected. With regard to the assessment tools, paper and pencil tasks are the most commonly used diagnostic tools to identify vertical neglect, although in recent years the use of computer-based tasks increased. Taken together, our results suggest that vertical neglect may be underestimated in patients with right hemisphere lesions and should always be assessed, especially in cases where the patient shows signs of horizontal neglect. The clinical assessment of vertical neglect is very important since it can lead to important functional limitations in everyday life, such as poor wheelchair handling, stumbling over unnoticed obstacles located below (or above), walking down stairs, taking off shoes.
Collapse
Affiliation(s)
- Pasquale Moretta
- Istituti Clinici Scientifici Maugeri IRCCS, Neuromotor Rehabilitation Unit of Telese Terme Institute, Benevento, Italy
| | - Nicola Davide Cavallo
- Department of Psychology, Università della Campania ‘Luigi Vanvitelli’, Caserta, Italy
| | - Eleonora Fonzo
- Department of Psychology, Università della Campania ‘Luigi Vanvitelli’, Caserta, Italy
| | - Antonio Maiorino
- Istituti Clinici Scientifici Maugeri IRCCS, Neuromotor Rehabilitation Unit of Telese Terme Institute, Benevento, Italy
| | - Cesario Ferrante
- Istituti Clinici Scientifici Maugeri IRCCS, Neuromotor Rehabilitation Unit of Telese Terme Institute, Benevento, Italy
| | - Pasquale Ambrosino
- Istituti Clinici Scientifici Maugeri IRCCS, Scientific Directorate of Telese Terme Institute, Benevento, Italy
| | - Cinzia Femiano
- Istituti Clinici Scientifici Maugeri IRCCS, Neuromotor Rehabilitation Unit of Telese Terme Institute, Benevento, Italy
| | - Gabriella Santangelo
- Department of Psychology, Università della Campania ‘Luigi Vanvitelli’, Caserta, Italy
| | - Laura Marcuccio
- Istituti Clinici Scientifici Maugeri IRCCS, Neuromotor Rehabilitation Unit of Telese Terme Institute, Benevento, Italy
| |
Collapse
|
5
|
Zigiotto L, Amorosino G, Saviola F, Jovicich J, Annicchiarico L, Rozzanigo U, Olivetti E, Avesani P, Sarubbo S. Spontaneous unilateral spatial neglect recovery after brain tumour resection: A multimodal diffusion and rs-fMRI case report. J Neuropsychol 2024; 18 Suppl 1:91-114. [PMID: 37431064 DOI: 10.1111/jnp.12339] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/25/2023] [Indexed: 07/12/2023]
Abstract
Patients with unilateral spatial neglect (USN) are unable to explore or to report stimuli presented in the left personal and extra-personal space. USN is usually caused by lesion of the right parietal lobe: nowadays, it is also clear the key role of structural connections (the second and the third branch of the right Superior Longitudinal Fasciculus, respectively, SLF II and III) and functional networks (Dorsal and Ventral Attention Network, respectively, DAN and VAN) in USN. In this multimodal case report, we have merged those structural and functional information derived from a patient with a right parietal lobe tumour and USN before surgery. Functional, structural and neuropsychological data were also collected 6 months after surgery, when the USN was spontaneously recovered. Diffusion metrics and Functional Connectivity (FC) of the right SLF and DAN, before and after surgery, were compared with the same data of a patient with a tumour in a similar location, but without USN, and with a control sample. Results indicate an impairment in the right SLF III and a reduction of FC of the right DAN in patients with USN before surgery compared to controls; after surgery, when USN was recovered, patient's diffusion metrics and FC showed no differences compared to the controls. This single case and its multimodal approach reinforce the crucial role of the right SLF III and DAN in the development and recovery of egocentric and allocentric extra-personal USN, highlighting the need to preserve these structural and functional areas during brain surgery.
Collapse
Affiliation(s)
- Luca Zigiotto
- Department of Neurosurgery, 'S. Chiara' Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
- Structural and Functional Connectivity Lab Project, 'S. Chiara' Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
- Department of Psychology, 'S. Chiara' Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Gabriele Amorosino
- Neuroinformatics Laboratory (NILab), Bruno Kessler Foundation (FBK), Trento, Italy
- Center for Mind/Brain Sciences-CIMeC, University of Trento, Rovereto, Italy
| | - Francesca Saviola
- Center for Mind/Brain Sciences-CIMeC, University of Trento, Rovereto, Italy
| | - Jorge Jovicich
- Center for Mind/Brain Sciences-CIMeC, University of Trento, Rovereto, Italy
| | - Luciano Annicchiarico
- Department of Neurosurgery, 'S. Chiara' Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
- Structural and Functional Connectivity Lab Project, 'S. Chiara' Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Umberto Rozzanigo
- Department of Neuroradiology, 'S. Chiara' Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Emanuele Olivetti
- Neuroinformatics Laboratory (NILab), Bruno Kessler Foundation (FBK), Trento, Italy
- Center for Mind/Brain Sciences-CIMeC, University of Trento, Rovereto, Italy
| | - Paolo Avesani
- Neuroinformatics Laboratory (NILab), Bruno Kessler Foundation (FBK), Trento, Italy
- Center for Mind/Brain Sciences-CIMeC, University of Trento, Rovereto, Italy
| | - Silvio Sarubbo
- Department of Neurosurgery, 'S. Chiara' Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
- Structural and Functional Connectivity Lab Project, 'S. Chiara' Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| |
Collapse
|
6
|
Guidali G, Bagattini C, De Matola M, Brignani D. Influence of frontal-to-parietal connectivity in pseudoneglect: A cortico-cortical paired associative stimulation study. Cortex 2023; 169:50-64. [PMID: 37862830 DOI: 10.1016/j.cortex.2023.08.012] [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: 06/09/2023] [Revised: 07/27/2023] [Accepted: 08/23/2023] [Indexed: 10/22/2023]
Abstract
Pseudoneglect is a set of visuospatial biases that entails a behavioral advantage for stimuli appearing in the left hemifield compared to the right one. Although right hemisphere dominance for visuospatial processing has been invoked to explain this phenomenon, its neurophysiological mechanisms are still debated, and the role of intra- and inter-hemispheric connectivity is yet to be defined. The present study explored the possibility of modulating pseudoneglect in healthy participants through a cortico-cortical paired associative stimulation protocol (ccPAS): a non-invasive brain stimulation protocol that manipulates the interplay between brain regions through the repeated, time-locked coupling of two transcranial magnetic stimulation (TMS) pulses. In the first experiment, healthy participants underwent a frontal-to-parietal (FP) and a parietal-to-frontal (PF) ccPAS. In the FP protocol, the first TMS pulse targeted the right frontal eye field (FEF), and the second pulse the right inferior parietal lobule (IPL), two critical areas for visuospatial and attentional processing. In the PF condition, the order of the pulses was reversed. In both protocols, the inter-stimulus interval (ISI) was 10 ms. Before and after stimulation, pseudoneglect was assessed with a landmark task and a manual line bisection task. A second experiment controlled for ccPAS timing dependency by testing FP-ccPAS with a longer ISI of 100 ms. Results showed that after administering the FP-ccPAS with the ISI of 10 ms, participants' leftward bias in the landmark task increased significantly, with no effects in the manual line bisection task. The other two protocols tested were ineffective. Our findings showed that ccPAS could be used to modulate pseudoneglect by exploiting frontal-to-parietal connectivity, possibly through increased top-down attentional control. FP-ccPAS could represent a promising tool to investigate connectivity properties within visuospatial and attentional networks in the healthy and as a potential rehabilitation protocol in patients suffering from severe visuospatial pathologies.
Collapse
Affiliation(s)
- Giacomo Guidali
- Neurophysiology Lab, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy.
| | - Chiara Bagattini
- Section of Neurosurgery, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Matteo De Matola
- Neurophysiology Lab, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Debora Brignani
- Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy.
| |
Collapse
|
7
|
Rich TJ, Palmer J. Neglect dyslexia: whole-word and within-word errors with parafoveal and foveal viewing. Exp Brain Res 2023; 241:2655-2668. [PMID: 37773416 PMCID: PMC10635956 DOI: 10.1007/s00221-023-06708-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 09/13/2023] [Indexed: 10/01/2023]
Abstract
Patients with left-sided neglect dyslexia often omit whole words positioned on the left, termed whole-word errors, or commit errors on the left-sided letters of words, termed unilateral paralexias. In addition, the errors have been shown to be exacerbated by simultaneously presented distractors, which has been interpreted as a failure of selective attention. In two experiments, we examined the dependency of these error types on parafoveal versus foveal viewing. The first experiment used a paradigm with parafoveal targets and distractors; the second a paradigm with foveal targets and parafoveal distractors. This enabled a separate evaluation of the influences of stimulus position within an egocentric frame, a two-word allocentric frame, and a within-word allocentric frame. First, regarding whole-word errors, we found the expected spatial and distractor effects with parafoveal targets and distractors. With foveal targets and parafoveal distractors, however, the spatial effect was effectively eliminated. Surprisingly, intrusions from the distractor word were common in distractor conditions. This is consistent with an egocentric account and not a two-word allocentric account. Second, we found that unilateral paralexias remained largely consistent regardless of spatial position or the presence of a distractor. Thus, there is a contrast in spatial and distractor effects between whole-word errors and unilateral paralexias. These results are consistent with three distinct deficits: an egocentric deficit across space resulting in whole-word errors, a failure of selective attention that results in whole-word intrusion errors, and a within-word allocentric deficit resulting in unilateral paralexias.
Collapse
Affiliation(s)
- Timothy J Rich
- Center for Stroke Rehabilitation Research, Kessler Foundation, 1199 Pleasant Valley Way, West Orange, NJ, USA.
- Department of Physical Medicine and Rehabilitation, Rutgers University, New Brunswick, NJ, USA.
| | - John Palmer
- Department of Psychology, University of Washington, Seattle, WA, USA
| |
Collapse
|
8
|
Fan JE, Bainbridge WA, Chamberlain R, Wammes JD. Drawing as a versatile cognitive tool. NATURE REVIEWS PSYCHOLOGY 2023; 2:556-568. [PMID: 39239312 PMCID: PMC11377027 DOI: 10.1038/s44159-023-00212-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/21/2023] [Indexed: 09/07/2024]
Abstract
Drawing is a cognitive tool that makes the invisible contents of mental life visible. Humans use this tool to produce a remarkable variety of pictures, from realistic portraits to schematic diagrams. Despite this variety and the prevalence of drawn images, the psychological mechanisms that enable drawings to be so versatile have yet to be fully explored. In this Review, we synthesize contemporary work in multiple areas of psychology, computer science and neuroscience that examines the cognitive processes involved in drawing production and comprehension. This body of findings suggests that the balance of contributions from perception, memory and social inference during drawing production varies depending on the situation, resulting in some drawings that are more realistic and other drawings that are more abstract. We also consider the use of drawings as a research tool for investigating various aspects of cognition, as well as the role that drawing has in facilitating learning and communication. Taken together, information about how drawings are used in different contexts illuminates the central role of visually grounded abstractions in human thought and behaviour.
Collapse
Affiliation(s)
- Judith E Fan
- Department of Psychology, University of California, San Diego, La Jolla, CA, USA
- Department of Psychology, Stanford University, Stanford, CA, USA
| | | | | | - Jeffrey D Wammes
- Department of Psychology, Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada
| |
Collapse
|
9
|
Vergallito A, Varoli E, Pisoni A, Mattavelli G, Del Mauro L, Feroldi S, Vallar G, Romero Lauro LJ. State-dependent effectiveness of cathodal transcranial direct current stimulation on cortical excitability. Neuroimage 2023; 277:120242. [PMID: 37348625 DOI: 10.1016/j.neuroimage.2023.120242] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/09/2023] [Accepted: 06/20/2023] [Indexed: 06/24/2023] Open
Abstract
The extensive use of transcranial direct current stimulation (tDCS) in experimental and clinical settings does not correspond to an in-depth understanding of its underlying neurophysiological mechanisms. In previous studies, we employed an integrated system of Transcranial Magnetic Stimulation and Electroencephalography (TMS-EEG) to track the effect of tDCS on cortical excitability. At rest, anodal tDCS (a-tDCS) over the right Posterior Parietal Cortex (rPPC) elicits a widespread increase in cortical excitability. In contrast, cathodal tDCS (c-tDCS) fails to modulate cortical excitability, being indistinguishable from sham stimulation. Here we investigated whether an endogenous task-induced activation during stimulation might change this pattern, improving c-tDCS effectiveness in modulating cortical excitability. In Experiment 1, we tested whether performance in a Visuospatial Working Memory Task (VWMT) and a modified Posner Cueing Task (mPCT), involving rPPC, could be modulated by c-tDCS. Thirty-eight participants were involved in a two-session experiment receiving either c-tDCS or sham during tasks execution. In Experiment 2, we recruited sixteen novel participants who performed the same paradigm but underwent TMS-EEG recordings pre- and 10 min post- sham stimulation and c-tDCS. Behavioral results showed that c-tDCS significantly modulated mPCT performance compared to sham. At a neurophysiological level, c-tDCS significantly reduced cortical excitability in a frontoparietal network likely involved in task execution. Taken together, our results provide evidence of the state dependence of c-tDCS in modulating cortical excitability effectively. The conceptual and applicative implications are discussed.
Collapse
Affiliation(s)
- Alessandra Vergallito
- Department of Psychology, University of Milano-Bicocca, Milano, Italy; NeuroMi, Milan Center for Neuroscience, Milano, Italy.
| | - Erica Varoli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Alberto Pisoni
- Department of Psychology, University of Milano-Bicocca, Milano, Italy; NeuroMi, Milan Center for Neuroscience, Milano, Italy
| | - Giulia Mattavelli
- IUSS Cognitive Neuroscience (ICON) Center, Scuola Universitaria Superiore IUSS, Pavia, Italy; Istituti Clinici Scientifici Maugeri IRCCS, Cognitive Neuroscience Laboratory of Pavia Institute, 27100, Italy
| | - Lilia Del Mauro
- Department of Psychology, University of Milano-Bicocca, Milano, Italy
| | - Sarah Feroldi
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Giuseppe Vallar
- Department of Psychology, University of Milano-Bicocca, Milano, Italy; NeuroMi, Milan Center for Neuroscience, Milano, Italy; MiBTec - Mind and Behavior Technological Center, University of Milano-Bicocca, Milan, Italy
| | - Leonor J Romero Lauro
- Department of Psychology, University of Milano-Bicocca, Milano, Italy; NeuroMi, Milan Center for Neuroscience, Milano, Italy
| |
Collapse
|
10
|
Sharp N, Hepworth LR. Treating Visual Inattention in Acute Stroke Survivors Using a Therapy Scanning Wall: A Proof-of-Concept Study. Br Ir Orthopt J 2023; 19:71-77. [PMID: 37577068 PMCID: PMC10417920 DOI: 10.22599/bioj.311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 07/14/2023] [Indexed: 08/15/2023] Open
Abstract
Background Visual inattention is common following right hemisphere stroke, with up to 80% of patients being affected. Visual inattention following stroke is linked to poorer outcomes. There is no clear evidence for how visual inattention should be treated in the hospital inpatient setting. Objective To explore the practical implications and possible benefits of using a visual scanning wall in a stroke rehabilitation unit as an assessment and treatment tool for visual inattention. Methods This proof-of-concept study recruited stroke survivors with visual inattention. Participants used the scanning wall for scanning training five days a week for two weeks. Assessments using the scanning wall and modified Albert's test were conducted at baseline and at day 14. Both participants and staff delivering the training were asked to complete an acceptability questionnaire. Results All participants demonstrated an improvement in the number of pictures identified from baseline to day 14. There was a mean improvement of 9.20 (95% CI 4.77 to 13.63) in the 14 days. This is a statistically significant improvement in the scanning wall score between baseline line and day 14 (p = 0.01). All participants and staff reported the scanning wall as acceptable to use. Conclusion This proof-of-concept study has demonstrated the scanning wall could be used to assess for visual inattention in extra personal space. Also, it could be beneficial and is acceptable for the treatment of visual inattention within a hospital inpatient setting for acute stroke survivors.
Collapse
Affiliation(s)
- Natalie Sharp
- Leighton Hospital, Mid Cheshire Hospitals NHS Foundation Trust, Crewe, UK
| | | |
Collapse
|
11
|
Kállai J, Páll T, Topa K, Zsidó AN. Physically real and virtual reality exposed line bisection response patterns: visuospatial attention allocation in virtual reality. Front Psychol 2023; 14:1176379. [PMID: 37554131 PMCID: PMC10405462 DOI: 10.3389/fpsyg.2023.1176379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/26/2023] [Indexed: 08/10/2023] Open
Abstract
INTRODUCTION To understand the nature of hemispatial attention allocation in virtual reality (VR), a line bisection task (LBT) was administered both in a real environment and a virtual environment to assess the rate of pseudoneglect. The mental construction of real and virtual environments was assumed to increase visuospatial activity in right hemisphere-related cognitive processes; an alteration in the activity that manifests in the direction and rate of line bisection lateral error. METHODS In the present study, fifty-one right-handed healthy college students were recruited. They performed a line bisection task in real and virtual environments. RESULTS The obtained data showed that LBT errors in real and VR environments were correlated and individually consistent. Furthermore, a leftward LBT error was found in the physically real environment, however, in a VR the line bisection bias drifted towards the right hemispace. Participants with a lower right-handedness score showed a lower rate of left LBT bias in a real environment, but in VR, their LBT error showed a stronger rightwards error. DISCUSSION Participants showed an individually consistent pattern in both real and VR environments, but VR-induced visuospatial reality construction was associated with rightward LBT bias in a virtual environment.
Collapse
Affiliation(s)
- János Kállai
- Institute of Behavioral Sciences, Medical School, University of Pécs, Pécs, Hungary
| | - Tamás Páll
- Artistic Research at the University of Applied Arts Vienna, Vienna, Austria
| | - Kristóf Topa
- Institute of Psychology, Faculty of Humanities and Social Sciences, University of Pécs, Pécs, Hungary
| | - András Norbert Zsidó
- Institute of Psychology, Faculty of Humanities and Social Sciences, University of Pécs, Pécs, Hungary
| |
Collapse
|
12
|
Leitner MC, Ladek AM, Hutzler F, Reitsamer H, Hawelka S. Placebo effect after visual restitution training: no eye-tracking controlled perimetric improvement after visual border stimulation in late subacute and chronic visual field defects after stroke. Front Neurol 2023; 14:1114718. [PMID: 37456634 PMCID: PMC10339290 DOI: 10.3389/fneur.2023.1114718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 06/13/2023] [Indexed: 07/18/2023] Open
Abstract
Introduction A significant number of Restitution Training (RT) paradigms claim to ameliorate visual field loss after stroke by re-activating neuronal connections in the residual visual cortex due to repeated bright light-stimulation at the border of the blind and intact fields. However, the effectiveness of RT has been considered controversial both in science and clinical practice for years. The main points of the controversy are (1) the reliability of perimetric results which may be affected by compensatory eye movements and (2) heterogeneous samples consisting of patients with visual field defects and/or visuospatial neglect. Methods By means of our newly developed and validated Virtual Reality goggles Salzburg Visual Field Trainer (SVFT) 16 stroke patients performed RT on a regular basis for 5 months. By means of our newly developed and validated Eye Tracking Based Visual Field Analysis (EFA), we conducted a first-time full eye-movement-controlled perimetric pre-post intervention study. Additionally, patients subjectively rated the size of their intact visual field. Results Analysis showed that patients' mean self-assessment of their subjective visual field size indicated statistically significant improvement while, in contrast, objective eye tracking controlled perimetric results revealed no statistically significant effect. Discussion Bright-light detection RT at the blind-field border solely induced a placebo effect and did not lead to training-induced neuroplasticity in the visual cortex of the type needed to ameliorate the visual field size of stroke patients.
Collapse
Affiliation(s)
- Michael Christian Leitner
- Salzburg University of Applied Sciences, Salzburg, Austria
- Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria
- Department of Psychology, University of Salzburg, Salzburg, Austria
| | - Anja-Maria Ladek
- Research Program for Experimental Ophthalmology and Glaucoma Research, Department of Ophthalmology and Optometry, University Hospital of the Paracelsus Medical University Salzburg, Salzburg, Austria
- Department of Ophthalmology and Optometry, SALK, University Hospital of the Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Florian Hutzler
- Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria
- Department of Psychology, University of Salzburg, Salzburg, Austria
| | - Herbert Reitsamer
- Research Program for Experimental Ophthalmology and Glaucoma Research, Department of Ophthalmology and Optometry, University Hospital of the Paracelsus Medical University Salzburg, Salzburg, Austria
- Department of Ophthalmology and Optometry, SALK, University Hospital of the Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Stefan Hawelka
- Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria
- Department of Psychology, University of Salzburg, Salzburg, Austria
| |
Collapse
|
13
|
Zhao Y, Li W, Huang D, Zhang W, Zhang S, Liu Q, Lv P, Yin Y. The therapeutic effect of transcranial direct current stimulation combined with cognitive training on patients with unilateral neglect after stroke. NeuroRehabilitation 2023; 52:477-483. [PMID: 37005898 DOI: 10.3233/nre-220265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
BACKGROUND: Unilateral neglect (UN) is a frequent cognitive disability following a stroke. Additional research is needed to determine the most effective cognitive rehabilitation techniques. OBJECTIVE: Based on the unilateral neglect neural network, we aim to explore the effect of a new model of transcranial direct current stimulation (tDCS) combined with cognitive training on stroke patients with unilateral neglect. METHODS: Thirty stroke patients with UN after stroke were randomly divided into three groups. All patients received cognitive training for UN and transcranial direct current stimulation with an anode placed on the corresponding part of the right hemisphere for 2 weeks. Treatment group A received multi-site tDCS from the inferior parietal lobule, middle temporal gyrus to prefrontal lobe. Group B received single-site tDCS of the inferior parietal lobule. The improvement of UN symptoms was evaluated by the scores of the Deviation index and Behavioral Inattention Test conventional tests. RESULTS: All groups showed improvements in all tests, and the scores of the treatment groups were statistically significant compared with the control group. CONCLUSION: Both single-site tDCS and multi-site tDCS have therapeutic effects on UN after stroke, and the difference in the therapeutic effects of the two modes still needs to be further explored.
Collapse
Affiliation(s)
- Yue Zhao
- North China University of Science and Technology, Tangshan, China
- Hebei Medical University, Shijiazhuang, China
| | - Weibo Li
- The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Dai Huang
- Hebei General Hospital, Shijiazhuang, China
| | | | - Shaohua Zhang
- The Eighth Hospital of Hebei Province, Shijiazhuang, China
| | | | - Peiyuan Lv
- Hebei General Hospital, Shijiazhuang, China
- Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, China
| | - Yu Yin
- North China University of Science and Technology, Tangshan, China
- Hebei Medical University, Shijiazhuang, China
- Hebei General Hospital, Shijiazhuang, China
- Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, China
| |
Collapse
|
14
|
Shi Y, Yu X, Liu L, Campbell D, Koniusz P, Li H. Accurate 3-DoF Camera Geo-Localization via Ground-to-Satellite Image Matching. IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE 2023; 45:2682-2697. [PMID: 35816536 DOI: 10.1109/tpami.2022.3189702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We address the problem of ground-to-satellite image geo-localization, that is, estimating the camera latitude, longitude and orientation (azimuth angle) by matching a query image captured at the ground level against a large-scale database with geotagged satellite images. Our prior arts treat the above task as pure image retrieval by selecting the most similar satellite reference image matching the ground-level query image. However, such an approach often produces coarse location estimates because the geotag of the retrieved satellite image only corresponds to the image center while the ground camera can be located at any point within the image. To further consolidate our prior research finding, we present a novel geometry-aware geo-localization method. Our new method is able to achieve the fine-grained location of a query image, up to pixel size precision of the satellite image, once its coarse location and orientation have been determined. Moreover, we propose a new geometry-aware image retrieval pipeline to improve the coarse localization accuracy. Apart from a polar transform in our conference work, this new pipeline also maps satellite image pixels to the ground-level plane in the ground-view via a geometry-constrained projective transform to emphasize informative regions, such as road structures, for cross-view geo-localization. Extensive quantitative and qualitative experiments demonstrate the effectiveness of our newly proposed framework. We also significantly improve the performance of coarse localization results compared to the state-of-the-art in terms of location recalls.
Collapse
|
15
|
Aggius-Vella E, Chebat DR, Maidenbaum S, Amedi A. Activation of human visual area V6 during egocentric navigation with and without visual experience. Curr Biol 2023; 33:1211-1219.e5. [PMID: 36863342 DOI: 10.1016/j.cub.2023.02.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 11/23/2022] [Accepted: 02/07/2023] [Indexed: 03/04/2023]
Abstract
V6 is a retinotopic area located in the dorsal visual stream that integrates eye movements with retinal and visuo-motor signals. Despite the known role of V6 in visual motion, it is unknown whether it is involved in navigation and how sensory experiences shape its functional properties. We explored the involvement of V6 in egocentric navigation in sighted and in congenitally blind (CB) participants navigating via an in-house distance-to-sound sensory substitution device (SSD), the EyeCane. We performed two fMRI experiments on two independent datasets. In the first experiment, CB and sighted participants navigated the same mazes. The sighted performed the mazes via vision, while the CB performed them via audition. The CB performed the mazes before and after a training session, using the EyeCane SSD. In the second experiment, a group of sighted participants performed a motor topography task. Our results show that right V6 (rhV6) is selectively involved in egocentric navigation independently of the sensory modality used. Indeed, after training, rhV6 of CB is selectively recruited for auditory navigation, similarly to rhV6 in the sighted. Moreover, we found activation for body movement in area V6, which can putatively contribute to its involvement in egocentric navigation. Taken together, our findings suggest that area rhV6 is a unique hub that transforms spatially relevant sensory information into an egocentric representation for navigation. While vision is clearly the dominant modality, rhV6 is in fact a supramodal area that can develop its selectivity for navigation in the absence of visual experience.
Collapse
Affiliation(s)
- Elena Aggius-Vella
- The Baruch Ivcher Institute for Brain, Cognition & Technology, Reichman University, 4610101 Herzliya, Israel.
| | - Daniel-Robert Chebat
- Department of Psychology, Faculty of Social Sciences and Humanities, Ariel University, 4076414 Ariel, Israel; Navigation and Accessibility Research Center of Ariel University (NARCA), Ariel University, 4076414 Ariel, Israel.
| | - Shachar Maidenbaum
- Department of Biomedical Engineering, Ben-Gurion University of the Negev, 8410501 Beersheba, Israel; Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, 8410501 Beersheba, Israel.
| | - Amir Amedi
- The Baruch Ivcher Institute for Brain, Cognition & Technology, Reichman University, 4610101 Herzliya, Israel.
| |
Collapse
|
16
|
Pitcher D. Visual motion: Asymmetrical processing differences between the cerebral hemispheres. Curr Biol 2022; 32:R957-R960. [PMID: 36167045 DOI: 10.1016/j.cub.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Hemispheric differences speak to the functional organisation of the human brain. A new study causally demonstrates such differences are present in bilateral motion-selective areas that are early in the visual cortical hierarchy.
Collapse
Affiliation(s)
- David Pitcher
- Department of Psychology, University of York, Heslington, York YO10 5DD, UK.
| |
Collapse
|
17
|
Latarnik S, Stahl J, Vossel S, Grefkes C, Fink GR, Weiss PH. The impact of apraxia and neglect on early rehabilitation outcome after stroke. Neurol Res Pract 2022; 4:46. [PMID: 36154935 PMCID: PMC9511731 DOI: 10.1186/s42466-022-00211-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 08/03/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
This study aims to characterize the impact of apraxia and visuospatial neglect on stroke patients’ cognitive and functional outcomes during early rehabilitation. Prior work implies an unfavorable effect of visuospatial neglect on rehabilitation; however, previous findings remain ambiguous and primarily considered long-term effects. Even less is known about the impact of apraxia on rehabilitation outcomes. Although clinicians agree on the significance of the first few weeks after stroke for the course of rehabilitation, studies exploring the impact of neglect and apraxia in this early rehabilitation period remain scarce.
Methods
Based on a screening of 515 hospitalized stroke patients from an early rehabilitation ward, 150 stroke patients (75 left-hemispheric strokes, 75 right hemispheric strokes) fulfilled the inclusion criteria and were enrolled in this observational, longitudinal study. The patients’ cognitive and functional statuses were documented at admission to the early rehabilitation ward and discharge. Also, detailed apraxia and neglect assessments were performed at midterm. The predictive values of age and apraxia and neglect severity (as reflected in two components from a principal component analysis of the neglect and apraxia assessments) for cognitive and functional outcomes at discharge were evaluated by multiple regression analyses.
Results
Besides the expected influence of the respective variables at admission, we observed a significant effect of apraxia severity on the cognitive outcome at discharge. Moreover, neglect severity predicted the Early Rehabilitation Barthel Index (Frühreha-Barthel-Index) at discharge. Supplementary moderator analysis revealed a differential effect of neglect severity on the cognitive outcome depending on the affected hemisphere.
Conclusion
Data indicate a strong association between apraxia and visuospatial neglect and early rehabilitation outcomes after stroke.
Collapse
|
18
|
Albini F, Pisoni A, Salvatore A, Calzolari E, Casati C, Marzoli SB, Falini A, Crespi SA, Godi C, Castellano A, Bolognini N, Vallar G. Aftereffects to Prism Exposure without Adaptation: A Single Case Study. Brain Sci 2022; 12:480. [PMID: 35448011 PMCID: PMC9028811 DOI: 10.3390/brainsci12040480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 03/07/2022] [Accepted: 03/24/2022] [Indexed: 02/05/2023] Open
Abstract
Visuo-motor adaptation to optical prisms (Prism Adaptation, PA), displacing the visual scene laterally, is a behavioral method used for the experimental investigation of visuomotor plasticity, and, in clinical settings, for temporarily ameliorating and rehabilitating unilateral spatial neglect. This study investigated the building up of PA, and the presence of the typically occurring subsequent Aftereffects (AEs) in a brain-damaged patient (TMA), suffering from apperceptive agnosia and a right visual half-field defect, with bilateral atrophy of the parieto-occipital cortices, regions involved in PA and AEs. Base-Right prisms and control neutral lenses were used. PA was achieved by repeated pointing movements toward three types of stimuli: visual, auditory, and bimodal audio-visual. The presence and the magnitude of AEs were assessed by proprioceptive, visual, visuo-proprioceptive, and auditory-proprioceptive straight-ahead pointing tasks. The patient's brain connectivity was investigated by Diffusion Tensor Imaging (DTI). Unlike control participants, TMA did not show any adaptation to prism exposure, but her AEs were largely preserved. These findings indicate that AEs may occur even in the absence of PA, as indexed by the reduction of the pointing error, showing a dissociation between the classical measures of PA and AEs. In the PA process, error reduction, and its feedback, may be less central to the building up of AEs, than the sensorimotor pointing activity per se.
Collapse
Affiliation(s)
- Federica Albini
- Department of Psychology, University of Milano-Bicocca, 20126 Milano, Italy; (A.P.); (A.S.); (N.B.)
| | - Alberto Pisoni
- Department of Psychology, University of Milano-Bicocca, 20126 Milano, Italy; (A.P.); (A.S.); (N.B.)
| | - Anna Salvatore
- Department of Psychology, University of Milano-Bicocca, 20126 Milano, Italy; (A.P.); (A.S.); (N.B.)
| | - Elena Calzolari
- Neuro-Otology Unit, Division of Brain Sciences, Imperial College London, London SW7 2AZ, UK;
| | - Carlotta Casati
- Experimental Laboratory of Research in Clinical Neuropsychology, IRCCS Istituto Auxologico Italiano, 20155 Milano, Italy;
- Department of Neurorehabilitation Sciences, IRCCS Istituto Auxologico Italiano, 20155 Milano, Italy
| | - Stefania Bianchi Marzoli
- Laboratory of Neuro-Ophthalmology and Ocular Electrophysiology, IRCCS Istituto Auxologico Italiano, 20155 Milano, Italy;
| | - Andrea Falini
- Neuroradiology Unit and CERMAC, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, 20132 Milano, Italy; (A.F.); (S.A.C.); (C.G.); (A.C.)
| | - Sofia Allegra Crespi
- Neuroradiology Unit and CERMAC, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, 20132 Milano, Italy; (A.F.); (S.A.C.); (C.G.); (A.C.)
| | - Claudia Godi
- Neuroradiology Unit and CERMAC, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, 20132 Milano, Italy; (A.F.); (S.A.C.); (C.G.); (A.C.)
| | - Antonella Castellano
- Neuroradiology Unit and CERMAC, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, 20132 Milano, Italy; (A.F.); (S.A.C.); (C.G.); (A.C.)
| | - Nadia Bolognini
- Department of Psychology, University of Milano-Bicocca, 20126 Milano, Italy; (A.P.); (A.S.); (N.B.)
- Experimental Laboratory of Research in Clinical Neuropsychology, IRCCS Istituto Auxologico Italiano, 20155 Milano, Italy;
| | - Giuseppe Vallar
- Department of Psychology, University of Milano-Bicocca, 20126 Milano, Italy; (A.P.); (A.S.); (N.B.)
- Experimental Laboratory of Research in Clinical Neuropsychology, IRCCS Istituto Auxologico Italiano, 20155 Milano, Italy;
| |
Collapse
|
19
|
Purpura G, Guzzetta A, Tinelli F. Visual neglect: does it exist in children with unilateral brain lesion? A systematic review. Neuropsychol Rehabil 2022; 33:703-717. [PMID: 35152851 DOI: 10.1080/09602011.2022.2032762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Visual Neglect (VN) is a common neuropsychological disorder in adults with unilateral brain lesion (UBL), characterized by the failure to attend and to report sensory events occurring in one side of space, contralateral to an area of brain damage. Less is known about VN expression in children following brain injury. The aim of this systematic review is to evaluate the presence of VN in UBL children and to identify the best neuropsychological assessment's tool for this population. A comprehensive search of 4 databases (Pubmed, Cochrane Database, SCOPUS, DARE) was undertaken from May 2020 to January 2021. Inclusion criteria were (i) subjects less than 18 years with cerebral lesions and with MRI, (ii) specific neuropsychological assessments for VN, (iii) studies published in English since 2000. A total of 309 articles were found in the initial search but only 10 observational studies met the full inclusion criteria. In these studies, 1051 subjects were evaluated for VN, of them 749 were controls and 302 had brain lesions. The two most common types of neuropsychological tools used in children with unilateral brain damage to assess the presence of VN were target cancellation tests and drawing tests.This review confirms the possibility that children with UBL can develop VN, even if it is not very clear which brain structure's characteristics can increase this risk. Children with right lesion showed visuo-spatial attention deficits focalized on the contralateral side, compatible with diagnosis of VN, while children with left lesion showed more generalized attention difficulties. The overall level of evidence correlating the presence of VN and different types of UBL in children was low and neuropsychological assessment of VN for children are sparse. Some important limitations of this review must be reported: the limited number of studies included, the administration of various types of tests to evaluate VN, the lack of information regarding the cognitive level of children in most of the studies. Further research is needed to understand patterns of VN based on brain structure and time since lesion.Systematic Review Registration: ID on PROSPERO: CRD42021281993.
Collapse
Affiliation(s)
- G. Purpura
- School of Medicine and Surgery, University of Milano Bicocca, Milano, Italy
| | - A. Guzzetta
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- Department of Developmental Neuroscience, IRCCS Stella Maris Foundation, Pisa, Italy
| | - F. Tinelli
- Department of Developmental Neuroscience, IRCCS Stella Maris Foundation, Pisa, Italy
| |
Collapse
|
20
|
Taylor J, Xu Y. Identifying the neural loci mediating conscious object orientation perception using fMRI MVPA. Cogn Neuropsychol 2022; 39:64-67. [PMID: 35188079 PMCID: PMC9994469 DOI: 10.1080/02643294.2022.2040973] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- JohnMark Taylor
- Visual Inference Laboratory, Zuckerman Institute, Columbia University, New York, United States
| | - Yaoda Xu
- Department of Psychology, Yale University, New Haven, CT, United States
| |
Collapse
|
21
|
Hausmann M, Corballis MC, Fabri M. Revisiting the attentional bias in the split brain. Neuropsychologia 2021; 162:108042. [PMID: 34582822 DOI: 10.1016/j.neuropsychologia.2021.108042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 09/10/2021] [Accepted: 09/12/2021] [Indexed: 10/20/2022]
Abstract
Previous research has revealed a strong right bias in allocation of attention in split brain subjects, suggesting that a pathological attention bias occurs not only after unilateral (usually right-hemispheric) damage but also after functional disconnection of intact right-hemispheric areas involved in allocation of attention from those in the left hemisphere. Here, we investigated the laterality bias in spatial attention, as measured with the greyscales task, in two split-brain subjects (D.D.C. and D.D.V.) who had undergone complete callosotomy. The greyscales task requires participants to judge the darker (or brighter) of two left-right mirror-reversed luminance gradients under conditions of free viewing, and offers an efficient means of quantifying pathological attentional biases in patients with unilateral lesions. As predicted, the results of the two split-brain subjects revealed a pathological rightward bias in allocation of attention, suggesting strong dependence on a single hemisphere (the left) in spatial attention, which is opposite to what one expects from people with intact commissures, and is remarkable in that it occurs in free viewing. In that sense both split-brain patients are behaving as though the brain is indeed split, especially in D.D.C. who had undergone partial resection of the anterior commissure in addition to complete callosotomy, whereas the anterior commissure is still intact in D.D.V. The findings support the view that the commissural pathways play a significant role in integration of attentional processes across cerebral hemispheres.
Collapse
Affiliation(s)
- Markus Hausmann
- Department of Psychology, Durham University, United Kingdom.
| | | | - Mara Fabri
- Department of Experimental and Clinical Medicine, Politechnic University of Marche, Ancona, Italy
| |
Collapse
|
22
|
Halicka M, Vittersø AD, Proulx MJ, Bultitude JH. Attention upturned: Bias toward and away from the affected side of the body and near space in a case of complex regional pain syndrome. Neuropsychologia 2021; 163:108079. [PMID: 34740614 DOI: 10.1016/j.neuropsychologia.2021.108079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 09/24/2021] [Accepted: 10/29/2021] [Indexed: 10/19/2022]
Abstract
People with Complex Regional Pain Syndrome (CRPS) following limb injury can show neuropsychological symptoms in the absence of observable brain pathologies. These can include sensory changes, distorted body representation, and inattention to their affected limb and its surrounding space, resembling post-stroke hemispatial neglect. The precise nature and mechanisms of these neuropsychological symptoms are unclear, however insights could be gained by testing for dissociations and associations that have been observed in stroke patients. Drawing from clinical and experimental methods for investigating spatial attention bias and related symptoms in stroke patients, we conducted a detailed investigation of neuropsychological symptoms in a woman with CRPS of her left arm who initially presented to us with pronounced inattention to her affected side. The patient showed visual and tactile neglect and extinction on her affected side on confrontation tests, but no attention deficits on "bedside" tests of neglect. On sensitive computer-based measures, attention biases were found in the patient's body and near space (in Temporal Order Judgements), but not far or imagined space (on the Greyscales task and Mental Number Line Bisection). Unique to the current literature, the patient showed a reversal in her Temporal Order Judgement bias across time, from inattention (first and second session) to hyperattention (third session) to her affected side. In contrast, pain and self-reported body representation distortion were similar across the three sessions. The patient had reduced central and peripheral visual acuity, however these deficits were near symmetrical and therefore could not explain her performance on the visual attention tasks. Given that spatial attention bias has been linked to imbalance in relative activation of the two cerebral hemispheres, we administered a Global-Local processing task to test for hemispheric asymmetry. This revealed no difference in global compared to local interference refuting any hemispheric imbalance. Instead, the patient showed impaired performance (compared to controls) on incongruent trials regardless of trial type, consistent with executive impairment. We conclude that spatial attention bias in CRPS can generalize across different sensory modalities and extend beyond the affected limb to the external space around it, independent of any low-level sensory disturbances. This bias is not necessarily directed away from the affected side or stable over time. People with CRPS can also demonstrate more generalized neuropsychological changes in sensory and executive functions. Our observations refute several existing theories about the mechanisms of attention bias in CRPS, and their relationship to pain, and have potential implications for treatment.
Collapse
Affiliation(s)
- Monika Halicka
- Centre for Pain Research, University of Bath, Bath, United Kingdom; Department of Psychology, University of Bath, Bath, United Kingdom.
| | - Axel D Vittersø
- Centre for Pain Research, University of Bath, Bath, United Kingdom; Department of Psychology, University of Bath, Bath, United Kingdom; Department of Sport and Health Sciences, University of Exeter, Exeter, United Kingdom
| | - Michael J Proulx
- Department of Psychology, University of Bath, Bath, United Kingdom; Centre for Reality & Virtual Environments Augmentation Labs, Department of Computer Science, University of Bath, Bath, United Kingdom
| | - Janet H Bultitude
- Centre for Pain Research, University of Bath, Bath, United Kingdom; Department of Psychology, University of Bath, Bath, United Kingdom; Centre for Functional Magnetic Resonance Imaging of the Brain (FMRIB), University of Oxford, Oxford, United Kingdom
| |
Collapse
|
23
|
Frigato G. The Neural Correlates of Access Consciousness and Phenomenal Consciousness Seem to Coincide and Would Correspond to a Memory Center, an Activation Center and Eight Parallel Convergence Centers. Front Psychol 2021; 12:749610. [PMID: 34659068 PMCID: PMC8511498 DOI: 10.3389/fpsyg.2021.749610] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 09/01/2021] [Indexed: 11/23/2022] Open
Abstract
An increasing number of authors suggest that the neural correlates of consciousness (NCC) have no selective, executive, or metacognitive function. It is believed that attention unconsciously selects the contents that will become conscious. Consciousness would have only the fundamental function of transforming the selected contents into a format easily used by high-level processors, such as working memory, language, or autobiographical memory. According to Dehaene, the neural correlates (NC) of access consciousness (AC; cognitive consciousness) constitute a widespread network in the frontal, parietal, and temporal cortices. While Tononi localized the correlates of phenomenal consciousness (PC; subjective consciousness) to a posterior “hot zone” in the temporo-parietal cortex. A careful examination of the works of these two groups leads to the conclusion that the correlates of access and PC coincide. The two consciousnesses are therefore two faces of the same single consciousness with both its cognitive and subjective contents. A review of the literature of the pathology called “neglect” confirms that the common correlates include 10: a memory center, an activation center, and eight parallel centers. From study of the “imagery” it can be deduced that these eight parallel centers would operate as points of convergence in the third person linking the respective eight sensory-motor-emotional areas activated by external perceptions and the corresponding memories of these perceptions deposited in the memory center. The first four centers of convergence appear in the most evolved fish and gradually reach eight in humans.
Collapse
|
24
|
Saj A, Pierce JE, Ronchi R, Ros T, Thomasson M, Bernati T, Van De Ville D, Serino A, Vuilleumier P. Real-time fMRI and EEG neurofeedback: A perspective on applications for the rehabilitation of spatial neglect. Ann Phys Rehabil Med 2021; 64:101561. [PMID: 34311120 DOI: 10.1016/j.rehab.2021.101561] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/06/2021] [Accepted: 07/10/2021] [Indexed: 01/20/2023]
Abstract
Spatial neglect is a neuropsychological syndrome characterized by a failure to orient, perceive, and act toward the contralesional side of the space after brain injury. Neglect is one of the most frequent and disabling neuropsychological syndromes following right-hemisphere damage, often persisting in the chronic phase and responsible for a poor functional outcome at hospital discharge. Different rehabilitation approaches have been proposed over the past 60 years, with a variable degree of effectiveness. In this point-of-view article, we describe a new rehabilitation technique for spatial neglect that directly targets brain activity and pathological physiological processes: namely, neurofeedback (NFB) with real-time brain imaging methodologies. In recent proof-of-principle studies, we have demonstrated the potential of this rehabilitation technique. Using real-time functional MRI (rt-fMRI) NFB in chronic neglect, we demonstrated that patients are able to upregulate their right visual cortex activity, a response that is otherwise reduced due to losses in top-down attentional signals. Using real-time electroencephalography NFB in patients with acute or chronic condition, we showed successful regulation with partial restoration of brain rhythm dynamics over the damaged hemisphere. Both approaches were followed by mild, but encouraging, improvement in neglect symptoms. NFB techniques, by training endogenous top-down modulation of attentional control on sensory processing, might induce sustained changes at both the neural and behavioral levels, while being non-invasive and safe. However, more properly powered clinical studies with control groups and longer follow-up are needed to fully establish the effectiveness of the techniques, identify the most suitable candidates, and determine how the techniques can be optimized or combined in the context of rehabilitation.
Collapse
Affiliation(s)
- Arnaud Saj
- University of Montreal, Psychology Department, Montreal, QC, Canada; University Hospital of Geneva, Neuropsychology Unit, Geneva, Switzerland.
| | - Jordan E Pierce
- Laboratory for Behavioral Neurology and Imaging of Cognition, Neuroscience Department, University of Geneva, Geneva, Switzerland
| | - Roberta Ronchi
- University Hospital of Geneva, Neuropsychology Unit, Geneva, Switzerland; Laboratory for Behavioral Neurology and Imaging of Cognition, Neuroscience Department, University of Geneva, Geneva, Switzerland
| | - Tomas Ros
- Laboratory for Behavioral Neurology and Imaging of Cognition, Neuroscience Department, University of Geneva, Geneva, Switzerland
| | - Marine Thomasson
- Clinical and Experimental Neuropsychology Laboratory, Department of Psychology, University of Geneva, Geneva, Switzerland
| | - Thérèse Bernati
- University Hospital of Geneva, Neuropsychology Unit, Geneva, Switzerland
| | - Dimitri Van De Ville
- Department of Radiology and Medical Informatics, University of Geneva, Geneva, Switzerland; Institute of Bioengineering, Center for Neuroprosthetics, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Andrea Serino
- Department of Clinical Neurosciences, University Hospital of Lausanne, Lausanne, Switzerland; Center for Neuroprosthetics, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland
| | - Patrik Vuilleumier
- Laboratory for Behavioral Neurology and Imaging of Cognition, Neuroscience Department, University of Geneva, Geneva, Switzerland
| |
Collapse
|
25
|
Leitner MC, Hawelka S. Visual field improvement in neglect after virtual reality intervention: a single-case study. Neurocase 2021; 27:308-318. [PMID: 34278959 DOI: 10.1080/13554794.2021.1951302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A patient suffering from visuo-spatial neglect was investigated as a special interest case during a study on the effectiveness of "restorative approaches" after visual field loss. This patient trained with our newly developed Virtual Reality (VR) system "Salzburg Visual Field Trainer" for 254 days. Perimetric results show a visual field expansion of 48.8% (left eye) and 36.8% (right eye) translating to an improvement of approximately 5.5° to 10.5° of visual angle. Further, subjective self-report shows improvements of up to 317% in visual field functionality. Our results indicate that patients suffering from visuo-spatial neglect could benefit from a VR-based restorative intervention.
Collapse
Affiliation(s)
- Michael Christian Leitner
- Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria.,Department of Psychology, University of Salzburg, Salzburg, Austria
| | - Stefan Hawelka
- Centre for Cognitive Neuroscience (CCNS), University of Salzburg, Salzburg, Austria.,Department of Psychology, University of Salzburg, Salzburg, Austria
| |
Collapse
|
26
|
Abstract
OBJECTIVE After attempting to move a plegic limb, patients with anosognosia for hemiplegia (AHP) may claim that limb movement occurred, even though the limb remained motionless. The authors investigated the characteristics, natural history, and anatomical basis of AHP phenomenology. METHODS Twenty-nine right-hemisphere stroke patients with acute anosognosia for hemiplegia (AHP) were prospectively assessed for the presence and characteristics of movement claims and observable behavior during movement attempts. RESULTS AHP was transient, with the condition resolving in 68% of patients by 1 week. Patients made movement claims during 31% of unilateral movement attempts and 50% of bilateral movement attempts. Movement claims were idiosyncratic, lacked internal consistency within individual patients, and even dissociated from explicit denial, as several patients made movement claims after they began to explicitly acknowledge hemiplegia. Observable behavior during movement attempts revealed allochiria (moving the right arm instead of the left) in 31% of patients, signs of implicit knowledge of weakness in 24%, and intact intention in 34%. Lesion analysis revealed that allochiria was associated with inferior right parietal lobe damage. CONCLUSIONS These results highlight that heterogeneity, phenomenological complexity, and transience are hallmarks of AHP. This advances clinical AHP assessment by showing that assessment of performance, rather than just verbal response, uncovers multiple dimensions of AHP. Allochiria emerges as an anatomically distinct subcomponent of the disorder. These findings also have theoretical implications, because they do not lend support to unitary pathogenic models proposing that illusions of movement or impaired intention form the basis of AHP. Most patients rapidly improve, which should invigorate the search for typical compensatory mechanisms underlying spontaneous recovery.
Collapse
Affiliation(s)
- Daniel Antoniello
- Montefiore Hospital/Albert Einstein College of Medicine, Bronx, N.Y. (Antoniello, Gottesman)
| | - Reena Gottesman
- Montefiore Hospital/Albert Einstein College of Medicine, Bronx, N.Y. (Antoniello, Gottesman)
| |
Collapse
|
27
|
Terruzzi S, Crivelli D, Campana E, Pisoni A, Romero Lauro LJ, Bolognini N, Vallar G. Exploring the time-course and the reference frames of adaptation to optical prisms and its aftereffects. Cortex 2021; 141:16-35. [PMID: 34023799 DOI: 10.1016/j.cortex.2021.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/25/2020] [Accepted: 04/13/2021] [Indexed: 11/28/2022]
Abstract
Prism adaptation (PA) is used to investigate visuo-motor plasticity and to rehabilitate the syndrome of Unilateral Spatial Neglect (USN). After PA, participants show aftereffects (AEs), contralateral to the side of the optical displacement in several tasks. This study explored the features of these AEs, specifically the "egocentric" versus "allocentric, object-based", reference frames involved, and their time course. In three experiments, healthy participants adapted to prismatic lenses inducing a horizontal displacement of the visual field. In Experiment #1, participants adapted to rightward displacing prisms. Four tasks were used requiring repeated pointings towards the participant's subjective egocentric straight-ahead, with the availability of proprioceptive or visual-proprioceptive signals, and, in some conditions, of an external allocentric visual frame (i.e., a rectangular paper sheet). Experiment #2 explored the role of the position of the allocentric frame, with AEs being tested by straight-ahead and frame bisection tasks, requiring pointing toward the external visual frame, placed in different positions of the working space. An egocentric visual proprioceptive task was administered after prism removal and after the execution of the allocentric tasks, to assess the effectiveness of the PA, as indexed by the AEs, and their persistence up to the end of the administration of the allocentric tasks. Experiment #3 differed from #2 in that participants adapted to leftward displacing lenses. Consistent with evidence from USN patients, in Experiment #1, in the egocentric tasks, AEs lasting up to 30 min after PA were found. In Experiment #2, AEs in "allocentric" tasks did not occur, regardless of frame position. Experiment #3 showed AEs in both the "egocentric" and the "allocentric" tasks, with the latter being minor in size. These findings illustrate that the spatial reference systems modulated by PA in extra-personal space primarily operate in spatial "egocentric" reference frames, with a comparatively minor and direction-specific role of "allocentric" frames.
Collapse
Affiliation(s)
- Stefano Terruzzi
- Department of Psychology, University of Milano-Bicocca, Milan, Italy; CeRiN, University of Trento, Rovereto, Italy.
| | - Damiano Crivelli
- Department of Psychology, University of Milano-Bicocca, Milan, Italy; Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
| | - Elena Campana
- Department of Psychology, University of Milano-Bicocca, Milan, Italy; Neuropsychological Unit, Istituto di Ricovero e Cura a Carattere Scientifico Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Alberto Pisoni
- Department of Psychology, University of Milano-Bicocca, Milan, Italy
| | | | - Nadia Bolognini
- Department of Psychology, University of Milano-Bicocca, Milan, Italy; Neuropsychological Laboratory, Istituto di Ricovero e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy
| | - Giuseppe Vallar
- Department of Psychology, University of Milano-Bicocca, Milan, Italy; Neuropsychological Laboratory, Istituto di Ricovero e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy.
| |
Collapse
|
28
|
Interocular Grouping in Perceptual Rivalry Localized with fMRI. Brain Topogr 2021; 34:323-336. [PMID: 33876330 PMCID: PMC8099824 DOI: 10.1007/s10548-021-00834-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 03/22/2021] [Indexed: 11/25/2022]
Abstract
Bistable perception refers to a broad class of dynamically alternating visual illusions that result from ambiguous images. These illusions provide a powerful method to study the mechanisms that determine how visual input is integrated over space and time. Binocular rivalry occurs when subjects view different images in each eye, and a similar experience called stimulus rivalry occurs even when the left and right images are exchanged at a fast rate. Many previous studies have identified with fMRI a network of cortical regions that are recruited during binocular rivalry, relative to non-rivalrous control conditions (termed replay) that use physically changing stimuli to mimic rivalry. However, we show here for the first time that additional cortical areas are activated when subjects experience rivalry with interocular grouping. When interocular grouping occurs, activation levels broadly increase, with a slight shift towards right hemisphere lateralization. Moreover, direct comparison of binocular rivalry with and without grouping highlights strong focused activity in the intraparietal sulcus and lateral occipital areas, such as right-sided retinotopic visual areas LO1 and IP2, as well as activity in left-sided visual areas LO1, and IP0-IP2. The equivalent analyses for comparable stimulus (eye-swap) rivalry showed very similar results; the main difference is greater recruitment of the right superior parietal cortex for binocular rivalry, as previously reported. Thus, we found minimal interaction between the novel networks isolated here for interocular grouping, and those previously attributed to stimulus and binocular rivalry. We conclude that spatial integration (i.e,. image grouping/segmentation) is a key function of lateral occipital/intraparietal cortex that acts similarly on competing binocular stimulus representations, regardless of fast monocular changes.
Collapse
|
29
|
Daini R, Primativo S, Albonico A, Veronelli L, Malaspina M, Corbo M, Martelli M, Arduino LS. The Focal Attention Window Size Explains Letter Substitution Errors in Reading. Brain Sci 2021; 11:247. [PMID: 33669454 PMCID: PMC7920487 DOI: 10.3390/brainsci11020247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/30/2021] [Accepted: 02/12/2021] [Indexed: 11/16/2022] Open
Abstract
Acquired Neglect Dyslexia is often associated with right-hemisphere brain damage and is mainly characterized by omissions and substitutions in reading single words. Martelli et al. proposed in 2011 that these two types of error are due to different mechanisms. Omissions should depend on neglect plus an oculomotor deficit, whilst substitutions on the difficulty with which the letters are perceptually segregated from each other (i.e., crowding phenomenon). In this study, we hypothesized that a deficit of focal attention could determine a pathological crowding effect, leading to imprecise letter identification and consequently substitution errors. In Experiment 1, three brain-damaged patients, suffering from peripheral dyslexia, mainly characterized by substitutions, underwent an assessment of error distribution in reading pseudowords and a T detection task as a function of cue size and timing, in order to measure focal attention. Each patient, when compared to a control group, showed a deficit in adjusting the attentional focus. In Experiment 2, a group of 17 right-brain-damaged patients were asked to perform the focal attention task and to read single words and pseudowords as a function of inter-letter spacing. The results allowed us to confirm a more general association between substitution-type reading errors and the performance in the focal attention task.
Collapse
Affiliation(s)
- Roberta Daini
- Department of Psychology, University of Milano-Bicocca, 20126 Milan, Italy; (A.A.); (M.M.)
- COMiB—Optics and Optometry Research Center, Università degli studi di Milano-Bicocca & NeuroMI—Milan Center for Neuroscience, 20126 Milan, Italy
| | - Silvia Primativo
- Department of Human Sciences, LUMSA University, 00193 Rome, Italy; (S.P.); (L.S.A.)
| | - Andrea Albonico
- Department of Psychology, University of Milano-Bicocca, 20126 Milan, Italy; (A.A.); (M.M.)
- Departments of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC V5Z 3N9, Canada
| | - Laura Veronelli
- Department of Neurorehabilitation Sciences, Casa di Cura del Policlinico, 20144 Milan, Italy; (L.V.); (M.C.)
| | - Manuela Malaspina
- Department of Psychology, University of Milano-Bicocca, 20126 Milan, Italy; (A.A.); (M.M.)
| | - Massimo Corbo
- Department of Neurorehabilitation Sciences, Casa di Cura del Policlinico, 20144 Milan, Italy; (L.V.); (M.C.)
| | - Marialuisa Martelli
- Department of Psychology, Sapienza University of Rome, 00185 Rome, Italy;
- Neuropsychology Unit, IRCCS Fondazione Santa Lucia, 00179 Rome, Italy
| | - Lisa S. Arduino
- Department of Human Sciences, LUMSA University, 00193 Rome, Italy; (S.P.); (L.S.A.)
| |
Collapse
|
30
|
Abstract
Alexia refers to a reading disorder caused by some form of acquired brain pathology, most commonly a stroke or tumor, in a previously literate subject. In neuropsychology, a distinction is made between central alexia (commonly seen in aphasia) and peripheral alexia (a perceptual or attentional deficit). The prototypical peripheral alexia is alexia without agraphia (pure alexia), where patients can write but are impaired in reading words and letters. Pure alexia is associated with damage to the left ventral occipitotemporal cortex (vOT) or its connections. Hemianopic alexia is associated with less extensive occipital damage and is caused by a visual field defect, which creates problems reading longer words and passages of text. Reading impairment can also arise due to attentional deficits, most commonly following right hemisphere or bilateral lesions. Studying patients with alexia, along with functional imaging studies of normal readers, has improved our understanding of the neurobiological processes involved in reading. A key question is whether an area in the left ventral occipitotemporal cortex is specialized for or selectively involved in word processing, or whether reading relies on tuning of more general purpose perceptual areas. Reading deficits may also be observed in dementia and traumatic brain injury, but often with less consistent deficit patterns than in patients with focal lesions.
Collapse
Affiliation(s)
- Randi Starrfelt
- Department of Psychology, University of Copenhagen, Copenhagen, Denmark.
| | - Zoe Woodhead
- Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom
| |
Collapse
|
31
|
Caggiano P, Veronelli L, Mora L, Arduino LS, Corbo M, Cocchini G. The downsized hand in personal neglect. J Clin Exp Neuropsychol 2020; 42:1072-1084. [PMID: 33203298 DOI: 10.1080/13803395.2020.1843603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Introduction: Personal neglect (PN) refers to a form of hemi-inattention toward the contralesional body space and it usually occurs following a right brain lesion. Recent studies suggest that PN indicates a disorder of body representation. Specifically, patients with PN show difficulties in identifying differences between left and right hands and have an altered visuospatial body map, which is associated with disrupted mental body representations. However, the metric representation of the body, and in particular the hands, has not been systematically addressed in patients showing this form of neglect. Method: In the present study, we have investigated this representation by testing the perceived hands' width of 11 hemiplegic patients with right hemisphere cerebral lesions (5 with PN) and 12 healthy controls on a judgment of passability task. Patients and controls were asked to imagine inserting their hand (left and right) through a series of vertical apertures of different sizes and to judge whether their hand could fit through. Due to the heterogeneity of the data, both parametric and non-parametric approaches were used. Furthermore, additional single-case analyses were conducted. Results: Study findings showed that patients with PN showed a significant underestimation of the left hand compared with their right hand. In contrast, whilst the right hand was equally distorted in both patients' groups, the hemiplegic patients with no evidence of PN tended to perceive the affected hand as larger than their ipsilesional one. Conclusions: In line with the literature, our findings confirm an underlying distorted body representation following right brain damage. However, for the first time, we report both a quantitative and qualitative difference in impact of hemiplegia and PN on body representation of the contralesional body space.
Collapse
Affiliation(s)
- Pietro Caggiano
- Department of Psychology, Goldsmiths University of London , London, UK
| | - Laura Veronelli
- Department of Neurorehabilitation Sciences, Casa di Cura del Policlinico , Milano, Italy
| | - Laura Mora
- Department of Psychology, Goldsmiths University of London , London, UK
| | - Lisa S Arduino
- Department of Human Sciences, Lumsa University , Roma, Italy
| | - Massimo Corbo
- Department of Neurorehabilitation Sciences, Casa di Cura del Policlinico , Milano, Italy
| | - Gianna Cocchini
- Department of Psychology, Goldsmiths University of London , London, UK
| |
Collapse
|
32
|
The correlation between apraxia and neglect in the right hemisphere: A voxel-based lesion-symptom mapping study in 138 acute stroke patients. Cortex 2020; 132:166-179. [DOI: 10.1016/j.cortex.2020.07.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 05/29/2020] [Accepted: 07/20/2020] [Indexed: 12/22/2022]
|
33
|
Jiang Y, Guo Z, McClure MA, He L, Mu Q. Effect of rTMS on Parkinson's cognitive function: a systematic review and meta-analysis. BMC Neurol 2020; 20:377. [PMID: 33076870 PMCID: PMC7574251 DOI: 10.1186/s12883-020-01953-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 10/05/2020] [Indexed: 12/13/2022] Open
Abstract
Background To evaluate the effects and optimal parameters of repetitive transcranial magnetic stimulation (rTMS) on cognition function of patients with Parkinson’s disease (PD) and to estimate which cognitive function may obtain more benefits from rTMS. Method The articles dealing with rTMS on cognitive function of PD patients were retrieved from the databases until April 2019. Outcomes of global cognitive function and different cognitive domains were extracted. The standardized mean differences (SMDs) with 95% confidence interval (CI) of cognitive outcome for different parameters, scales, and cognitive functions were estimated. Results Fourteen studies involving 173 subjects were included in this meta-analysis. A significant effect size was observed with the mini-mental state examination (MMSE) for the global cognitive outcome based on the evidence of four published articles. Further subtests for different cognitive domains demonstrated prominent effect for the executive function. The significant effect sizes for executive function were found with multiple sessions of high-frequency rTMS over frontal cortex; especially over dorsolateral prefrontal cortex (DLPFC). All of the other cognitive domains, which included memory, attention, and language ability, did not obtain significant effects. Conclusions Multiple sessions of high-frequency rTMS over the DLPFC may have positive effect on executive function in PD patients. Further well designed studies with large sample sizes are needed to verify our results and ascertain the long-term effects of rTMS.
Collapse
Affiliation(s)
- Yi Jiang
- Department of Radiology and Institute of Rehabilitation and Imaging of Brain Function, The Second Clinical Medical College of North Sichuan Medical College Nanchong Central Hospital, NO. 97 South Renmin Road, Shunqing District, Nanchong, 637000, Sichuan, China
| | - Zhiwei Guo
- Department of Radiology and Institute of Rehabilitation and Imaging of Brain Function, The Second Clinical Medical College of North Sichuan Medical College Nanchong Central Hospital, NO. 97 South Renmin Road, Shunqing District, Nanchong, 637000, Sichuan, China
| | - Morgan A McClure
- Department of Radiology and Institute of Rehabilitation and Imaging of Brain Function, The Second Clinical Medical College of North Sichuan Medical College Nanchong Central Hospital, NO. 97 South Renmin Road, Shunqing District, Nanchong, 637000, Sichuan, China
| | - Lin He
- Department of Radiology and Institute of Rehabilitation and Imaging of Brain Function, The Second Clinical Medical College of North Sichuan Medical College Nanchong Central Hospital, NO. 97 South Renmin Road, Shunqing District, Nanchong, 637000, Sichuan, China
| | - Qiwen Mu
- Department of Radiology and Institute of Rehabilitation and Imaging of Brain Function, The Second Clinical Medical College of North Sichuan Medical College Nanchong Central Hospital, NO. 97 South Renmin Road, Shunqing District, Nanchong, 637000, Sichuan, China. .,Department of Radiology, Peking University Third Hospital, Beijing, China.
| |
Collapse
|
34
|
Pickard-Jones B, d'Avossa G, Sapir A. 3D shape-from-shading relies on a light source prior that does not change with age. Vision Res 2020; 177:88-96. [PMID: 33002649 DOI: 10.1016/j.visres.2020.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 01/10/2023]
Abstract
The light-from-above prior enables observers to infer an object's three-dimensional shape-from-shading information. Young, Western adults implicitly assume the light source is placed not only above, but also to the left of, the observer. Previous evidence reached conflicting conclusions regarding the development of the assumed light source direction. In the present study, we measured the light source prior cross-sectionally in children aged 5-11 years, using an explicit shape judgement task. The light-from-above prior, and the left bias, were present as soon as children became sensitive to shading information, regardless of their age. Global processing preference was not related to the ability to perform the task. Similarly, scanning habits, as measured by reading proficiency and starting position in a cancellation task, were not related to the magnitude of the left bias. Children's ability to report shape-from-shading judgements increased with age, but age did not affect the direction of light priors. Thus, we concluded that the development of the light-from-above prior and leftward bias do not require an extended maturation period, but rather the direction of the light-source priors may be developmentally stable once measurable.
Collapse
Affiliation(s)
- Beverley Pickard-Jones
- School of Psychology, Bangor University, UK; Brigantia Building, School of Psychology, Bangor University, Penrallt Road, Bangor LL57 2AS, UK.
| | - Giovanni d'Avossa
- School of Psychology, Bangor University, UK; Brigantia Building, School of Psychology, Bangor University, Penrallt Road, Bangor LL57 2AS, UK.
| | - Ayelet Sapir
- School of Psychology, Bangor University, UK; Brigantia Building, School of Psychology, Bangor University, Penrallt Road, Bangor LL57 2AS, UK.
| |
Collapse
|
35
|
Mengotti P, Käsbauer AS, Fink GR, Vossel S. Lateralization, functional specialization, and dysfunction of attentional networks. Cortex 2020; 132:206-222. [PMID: 32998061 DOI: 10.1016/j.cortex.2020.08.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 04/20/2020] [Accepted: 08/31/2020] [Indexed: 12/11/2022]
Abstract
The present review covers the latest findings on the lateralization of the dorsal and ventral attention systems, their functional specialization, and their clinical relevance for stroke-induced attentional dysfunction. First, the original assumption of a bilateral dorsal system for top-down attention and a right-lateralized ventral system for stimulus-driven attention is critically reviewed. The evidence for the involvement of the left parietal cortex in attentional functions is discussed and findings on putative pathways linking the dorsal and ventral network are presented. In the second part of the review, we focus on the different attentional subsystems and their lateralization, discussing the differences between spatial, feature- and object-based attention, and motor attention. We also review studies based on predictive coding frameworks of attentional functions. Finally, in the third section, we provide an overview of the consequences of specific disruption within the attention networks after stroke. The role of the interhemispheric (im)balance is discussed, and the results of new promising therapeutic approaches employing brain stimulation techniques such as transcranial magnetic stimulation (TMS) or transcranial direct current stimulation (tDCS) are presented.
Collapse
Affiliation(s)
- Paola Mengotti
- Cognitive Neuroscience, Institute of Neuroscience & Medicine (INM-3), Forschungszentrum Jülich, Jülich, Germany.
| | - Anne-Sophie Käsbauer
- Cognitive Neuroscience, Institute of Neuroscience & Medicine (INM-3), Forschungszentrum Jülich, Jülich, Germany
| | - Gereon R Fink
- Cognitive Neuroscience, Institute of Neuroscience & Medicine (INM-3), Forschungszentrum Jülich, Jülich, Germany; Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Simone Vossel
- Cognitive Neuroscience, Institute of Neuroscience & Medicine (INM-3), Forschungszentrum Jülich, Jülich, Germany; Department of Psychology, Faculty of Human Sciences, University of Cologne, Cologne, Germany
| |
Collapse
|
36
|
Sperber C, Clausen J, Benke T, Karnath HO. The anatomy of spatial neglect after posterior cerebral artery stroke. Brain Commun 2020; 2:fcaa163. [PMID: 33543137 PMCID: PMC7846084 DOI: 10.1093/braincomms/fcaa163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 08/10/2020] [Accepted: 09/04/2020] [Indexed: 11/14/2022] Open
Abstract
Spatial neglect is a common consequence of stroke in the territory of the right middle cerebral artery. Damage to a perisylvian fronto-temporo-parietal network has been demonstrated to underlie this disorder. Less common, stroke to the posterior cerebral artery territory may also lead to spatial neglect. This study aimed to uncover the anatomical underpinnings of spatial neglect after posterior cerebral artery infarction. A sample of 50 posterior cerebral artery infarct patients was screened for spatial neglect. Neural correlates of neglect were investigated both with voxel-based lesion behaviour mapping and with region-of-interest analyses. Brain damage neither to the splenium, nor to the parahippocampal gyrus, nor to the thalamus was predictive of spatial neglect. Only damage to the perisylvian fronto-temporo-parietal network of spatial neglect was significantly associated with neglect severity. We conclude that both posterior and middle cerebral artery stroke induce spatial neglect after damage to the same perisylvian brain network. The findings contradict previous theories that postulated neural correlates of spatial neglect specifically supplied by the posterior cerebral artery. In posterior cerebral artery stroke patients, affected parts of this network are located at the border zone between the posterior and middle cerebral artery territories. Inter-individual variability in the localization of the border between both artery territories appears to mediate the occurrence of spatial neglect after posterior cerebral artery stroke.
Collapse
Affiliation(s)
- Christoph Sperber
- Division of Neuropsychology, Hertie-Institute for Clinical Brain Research, Centre of Neurology, University of Tübingen, 72076 Tübingen, Germany
| | - Jacob Clausen
- Division of Neuropsychology, Hertie-Institute for Clinical Brain Research, Centre of Neurology, University of Tübingen, 72076 Tübingen, Germany
| | - Thomas Benke
- Department of Neurology, Medical University Innsbruck, A - 6020 Innsbruck, Austria
| | - Hans-Otto Karnath
- Division of Neuropsychology, Hertie-Institute for Clinical Brain Research, Centre of Neurology, University of Tübingen, 72076 Tübingen, Germany
- Department of Psychology, University of South Carolina, Columbia, SC 29208, USA
| |
Collapse
|
37
|
Van Vleet T, Bonato P, Fabara E, Dabit S, Kim S, Chiu C, Bisogno AL, Merzenich M, Corbetta M, DeGutis J. Alertness Training Improves Spatial Bias and Functional Ability in Spatial Neglect. Ann Neurol 2020; 88:747-758. [DOI: 10.1002/ana.25862] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 07/21/2020] [Accepted: 07/26/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Thomas Van Vleet
- Department of Research and Development Posit Science Inc San Francisco CA USA
| | - Paolo Bonato
- Department of Physical Medicine & Rehabilitation, Harvard Medical School Spaulding Rehabilitation Hospital Boston MA USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University Boston MA USA
| | - Eric Fabara
- Wyss Institute for Biologically Inspired Engineering, Harvard University Boston MA USA
| | - Sawsan Dabit
- Department of Research and Development Posit Science Inc San Francisco CA USA
| | - Sarah‐Jane Kim
- Department of Research and Development Posit Science Inc San Francisco CA USA
| | - Christopher Chiu
- Department of Psychology University of Massachusetts Boston MA USA
| | - Antonio Luigi Bisogno
- Clinica Neurologica, Department of Neuroscience, and Padova Neuroscience Center (PNC) University of Padova Italy
| | - Michael Merzenich
- Department of Research and Development Posit Science Inc San Francisco CA USA
- School of Medicine University of California San Francisco CA USA
| | - Maurizio Corbetta
- Clinica Neurologica, Department of Neuroscience, and Padova Neuroscience Center (PNC) University of Padova Italy
- Department of Neurology, Radiology Neuroscience Washington University School of Medicine St. Louis MO USA
- Venetian Institute of Molecular Medicine, VIMM Padova Italy
| | - Joseph DeGutis
- Boston Attention and Learning Laboratory, VA Boston Healthcare System Boston MA USA
- Department of Psychiatry Harvard Medical School Boston MA USA
| |
Collapse
|
38
|
The anatomo-clinical picture of the pathological embodiment over someone else's body part after stroke. Cortex 2020; 130:203-219. [DOI: 10.1016/j.cortex.2020.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 11/26/2019] [Accepted: 05/04/2020] [Indexed: 12/12/2022]
|
39
|
Unmasking the relevance of hemispheric asymmetries—Break on through (to the other side). Prog Neurobiol 2020; 192:101823. [DOI: 10.1016/j.pneurobio.2020.101823] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 04/17/2020] [Accepted: 05/13/2020] [Indexed: 12/21/2022]
|
40
|
Kwon S, Park W, Kim M, Kim JM. Relationship Between Line Bisection Test Time and Hemispatial Neglect Prognosis in Patients With Stroke: A Prospective Pilot Study. Ann Rehabil Med 2020; 44:292-300. [PMID: 32752577 PMCID: PMC7463114 DOI: 10.5535/arm.19112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/18/2019] [Indexed: 11/18/2022] Open
Abstract
Objective To determine the relationship between line bisection test (LBT) performance time and prognosis of hemispatial neglect (HSN) in stroke patients. Methods Data on stroke patients with HSN were prospectively collected. After patient recruitment and eligibility screening, the LBT, Motor-Free Visual Perception Test 3rd edition, and Korean version of Mini-Mental State Examination were performed at the time of admission and 4 weeks thereafter. The LBT performance time was also measured. All patients received conventional rehabilitation for 4 weeks. Based on the improvements in their LBT grades, the patients were divided into improved and non-improved groups. The evaluation results of the two groups were compared using Mann–Whitney U-tests and logistic regression was performed to predict the independence of each outcome. Results In total, 26 stroke patients with HSN were included, with 13 patients in each group. Significant differences were observed in the baseline LBT performance times between the improved and non-improved groups (p<0.05). Logistic regression analysis revealed associations between HSN prognosis, and baseline LBT performance time (odds ratio=0.95; 95% confidence interval, 0.90–1.00; p<0.05) and baseline Motor-Free Visual Perception Test 3rd edition (odds ratio=1.20; 95% confidence interval, 1.01–1.43; p<0.05). Conclusion A significant relationship was observed between the baseline LBT performance time and HSN prognosis.
Collapse
Affiliation(s)
- Shinyoung Kwon
- Department of Rehabilitation Medicine, CHA Bundang Medical Center, CHA University College of Medicine, Seongnam, Korea.,Rehabilitation and Regeneration Research Center, CHA University, Pocheon, Korea
| | - Wookyung Park
- Department of Rehabilitation Medicine, CHA Bundang Medical Center, CHA University College of Medicine, Seongnam, Korea.,Rehabilitation and Regeneration Research Center, CHA University, Pocheon, Korea
| | - MinYoung Kim
- Department of Rehabilitation Medicine, CHA Bundang Medical Center, CHA University College of Medicine, Seongnam, Korea.,Rehabilitation and Regeneration Research Center, CHA University, Pocheon, Korea
| | - Jong Moon Kim
- Department of Rehabilitation Medicine, CHA Bundang Medical Center, CHA University College of Medicine, Seongnam, Korea.,Rehabilitation and Regeneration Research Center, CHA University, Pocheon, Korea
| |
Collapse
|
41
|
Linking bodily, environmental and mental states in the self—A three-level model based on a meta-analysis. Neurosci Biobehav Rev 2020; 115:77-95. [DOI: 10.1016/j.neubiorev.2020.05.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 04/06/2020] [Accepted: 05/08/2020] [Indexed: 02/01/2023]
|
42
|
Bieth T, Beauvais D, Romeu P, Legris N, Chassin O, Sarov M, Rouquette A, Azouvi P, Denier C. Validation of a new test for early assessment of unilateral neglect in acute stroke: The Rapid Unilateral Neglect Screening (RUNS) test. Ann Phys Rehabil Med 2020; 64:101399. [PMID: 32534155 DOI: 10.1016/j.rehab.2020.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 05/17/2020] [Indexed: 11/16/2022]
Affiliation(s)
- Theophile Bieth
- Stroke Unit, Neurology Department, Assistance Publique-Hôpitaux de Paris (AP-HP), Bicêtre Hôpitaux Universitaires Paris Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France.
| | - Diane Beauvais
- Stroke Unit, Neurology Department, Assistance Publique-Hôpitaux de Paris (AP-HP), Bicêtre Hôpitaux Universitaires Paris Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Pauline Romeu
- Stroke Unit, Neurology Department, Assistance Publique-Hôpitaux de Paris (AP-HP), Bicêtre Hôpitaux Universitaires Paris Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Nicolas Legris
- Stroke Unit, Neurology Department, Assistance Publique-Hôpitaux de Paris (AP-HP), Bicêtre Hôpitaux Universitaires Paris Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Olivier Chassin
- Stroke Unit, Neurology Department, Assistance Publique-Hôpitaux de Paris (AP-HP), Bicêtre Hôpitaux Universitaires Paris Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Mariana Sarov
- Stroke Unit, Neurology Department, Assistance Publique-Hôpitaux de Paris (AP-HP), Bicêtre Hôpitaux Universitaires Paris Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Alexandra Rouquette
- CESP, Inserm, Maison de Solenn, Université Paris-Sud, UVSQ, Université Paris-Saclay, Paris, France; Public Health and Epidemiology Department, AP-HP, Bicêtre Hôpitaux Universitaires Paris Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Philippe Azouvi
- Rehabilitation Department, AP-HP, Hôpital Raymond-Poincaré, Garches, France
| | - Christian Denier
- Stroke Unit, Neurology Department, Assistance Publique-Hôpitaux de Paris (AP-HP), Bicêtre Hôpitaux Universitaires Paris Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| |
Collapse
|
43
|
Zigiotto L, Damora A, Albini F, Casati C, Scrocco G, Mancuso M, Tesio L, Vallar G, Bolognini N. Multisensory stimulation for the rehabilitation of unilateral spatial neglect. Neuropsychol Rehabil 2020; 31:1410-1443. [PMID: 32558611 DOI: 10.1080/09602011.2020.1779754] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Unilateral spatial neglect (USN) is a neuropsychological syndrome, typically caused by lesions of the right hemisphere, whose features are the defective report of events occurring in the left (contralesional) side of space and the inability to orient and set up actions leftwards. Multisensory integration mechanisms, largely spared in USN patients, may temporally modulate spatial orienting. In this pilot study, the effects of an intensive audio-visual Multisensory Stimulation (MS) on USN were assessed, and compared with those of a treatment that ameliorates USN, Prismatic Adaptation (PA). Twenty USN stroke patients received a 2-week treatment (20 sessions, twice per day) of MS or PA. The effects of MS and PA were assessed by a set of neuropsychological clinical tests (target cancellation, line bisection, sentence reading, personal neglect, complex drawing) and the Catherine Bergego Scale for functional disability. Results showed that MS brought about an amelioration of USN deficits overall comparable to that induced by PA; personal neglect was improved only by MS, not by PA. The clinical gains of the MS treatment were not influenced by duration of disease and lesion volume, and they persisted up to one month post-treatment. In conclusion, MS represents a novel and promising rehabilitation procedure for USN.
Collapse
Affiliation(s)
- Luca Zigiotto
- Department of Psychology & Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milan, Italy.,Division of Neurosurgery, Santa Chiara Hospital, Trento, Italy
| | - Alessio Damora
- Department of Psychology & Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milan, Italy.,Tuscany Rehabilitation Clinic, Arezzo, Italy
| | - Federica Albini
- Department of Psychology & Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milan, Italy.,Clinical Neuropsychology Unit, Rehabilitation Department, S. Antonio Abate Hospital, Gallarate, Italy
| | - Carlotta Casati
- Laboratory of Neuropsychology, Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Department of Neurorehabilitation Sciences, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Gessica Scrocco
- Department of Psychology & Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milan, Italy.,Tuscany Rehabilitation Clinic, Arezzo, Italy
| | - Mauro Mancuso
- Tuscany Rehabilitation Clinic, Arezzo, Italy.,Physical and Rehabilitative Medicine Unit, NHS South-Est Tuscany, Grossetto, Italy
| | - Luigi Tesio
- Department of Neurorehabilitation Sciences, Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
| | - Giuseppe Vallar
- Department of Psychology & Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milan, Italy.,Laboratory of Neuropsychology, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Nadia Bolognini
- Department of Psychology & Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milan, Italy.,Laboratory of Neuropsychology, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| |
Collapse
|
44
|
Steinkamp SR, Vossel S, Fink GR, Weidner R. Attentional reorientation along the meridians of the visual field: Are there different neural mechanisms at play? Hum Brain Mapp 2020; 41:3765-3780. [PMID: 32525609 PMCID: PMC7416051 DOI: 10.1002/hbm.25086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 05/14/2020] [Accepted: 05/18/2020] [Indexed: 12/03/2022] Open
Abstract
Hemispatial neglect, after unilateral lesions to parietal brain areas, is characterized by an inability to respond to unexpected stimuli in contralesional space. As the visual field's horizontal meridian is most severely affected, the brain networks controlling visuospatial processes might be tuned explicitly to this axis. We investigated such a potential directional tuning in the dorsal and ventral frontoparietal attention networks, with a particular focus on attentional reorientation. We used an orientation‐discrimination task where a spatial precue indicated the target position with 80% validity. Healthy participants (n = 29) performed this task in two runs and were required to (re‐)orient attention either only along the horizontal or the vertical meridian, while fMRI and behavioral measures were recorded. By using a general linear model for behavioral and fMRI data, dynamic causal modeling for effective connectivity, and other predictive approaches, we found strong statistical evidence for a reorientation effect for horizontal and vertical runs. However, neither neural nor behavioral measures differed between vertical and horizontal reorienting. Moreover, models from one run successfully predicted the cueing condition in the respective other run. Our results suggest that activations in the dorsal and ventral attention networks represent higher‐order cognitive processes related to spatial attentional (re‐)orientating that are independent of directional tuning and that unilateral attention deficits after brain damage are based on disrupted interactions between higher‐level attention networks and sensory areas.
Collapse
Affiliation(s)
- Simon R. Steinkamp
- Cognitive Neuroscience, Institute of Neuroscience & Medicine (INM‐3)Research Centre JuelichJuelichGermany
| | - Simone Vossel
- Cognitive Neuroscience, Institute of Neuroscience & Medicine (INM‐3)Research Centre JuelichJuelichGermany
- Department of Psychology, Faculty of Human SciencesUniversity of CologneCologneGermany
| | - Gereon R. Fink
- Cognitive Neuroscience, Institute of Neuroscience & Medicine (INM‐3)Research Centre JuelichJuelichGermany
- Department of Neurology, Faculty of Medicine and University Hospital CologneUniversity of CologneCologneGermany
| | - Ralph Weidner
- Cognitive Neuroscience, Institute of Neuroscience & Medicine (INM‐3)Research Centre JuelichJuelichGermany
| |
Collapse
|
45
|
Tivadar RI, Gaglianese A, Murray MM. Auditory Enhancement of Illusory Contour Perception. Multisens Res 2020; 34:1-15. [PMID: 33706283 DOI: 10.1163/22134808-bja10018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 04/24/2020] [Indexed: 11/19/2022]
Abstract
Illusory contours (ICs) are borders that are perceived in the absence of contrast gradients. Until recently, IC processes were considered exclusively visual in nature and presumed to be unaffected by information from other senses. Electrophysiological data in humans indicates that sounds can enhance IC processes. Despite cross-modal enhancement being observed at the neurophysiological level, to date there is no evidence of direct amplification of behavioural performance in IC processing by sounds. We addressed this knowledge gap. Healthy adults ( n = 15) discriminated instances when inducers were arranged to form an IC from instances when no IC was formed (NC). Inducers were low-constrast and masked, and there was continuous background acoustic noise throughout a block of trials. On half of the trials, i.e., independently of IC vs NC, a 1000-Hz tone was presented synchronously with the inducer stimuli. Sound presence improved the accuracy of indicating when an IC was presented, but had no impact on performance with NC stimuli (significant IC presence/absence × Sound presence/absence interaction). There was no evidence that this was due to general alerting or to a speed-accuracy trade-off (no main effect of sound presence on accuracy rates and no comparable significant interaction on reaction times). Moreover, sound presence increased sensitivity and reduced bias on the IC vs NC discrimination task. These results demonstrate that multisensory processes augment mid-level visual functions, exemplified by IC processes. Aside from the impact on neurobiological and computational models of vision, our findings may prove clinically beneficial for low-vision or sight-restored patients.
Collapse
Affiliation(s)
- Ruxandra I Tivadar
- 1The LINE (Laboratory for Investigative Neurophysiology), Department of Radiology, University Hospital CenterandUniversity of Lausanne, 1011 Lausanne, Switzerland.,2Department of Ophthalmology, University of LausanneandFondation Asile des aveugles, Lausanne, Switzerland
| | - Anna Gaglianese
- 1The LINE (Laboratory for Investigative Neurophysiology), Department of Radiology, University Hospital CenterandUniversity of Lausanne, 1011 Lausanne, Switzerland.,3Spinoza Centre for Neuroimaging, Amsterdam, The Netherlands
| | - Micah M Murray
- 1The LINE (Laboratory for Investigative Neurophysiology), Department of Radiology, University Hospital CenterandUniversity of Lausanne, 1011 Lausanne, Switzerland.,2Department of Ophthalmology, University of LausanneandFondation Asile des aveugles, Lausanne, Switzerland.,4Sensory, Perceptual and Cognitive Neuroscience Section, Center for Biomedical Imaging (CIBM), University Hospital CenterandUniversity of Lausanne, 1011 Lausanne, Switzerland.,5Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN, USA
| |
Collapse
|
46
|
Trinkler I, Chéhère P, Salgues J, Monin ML, Tezenas du Montcel S, Khani S, Gargiulo M, Durr A. Contemporary Dance Practice Improves Motor Function and Body Representation in Huntington's Disease: A Pilot Study. J Huntingtons Dis 2020; 8:97-110. [PMID: 30776016 DOI: 10.3233/jhd-180315] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Physical exercise improves neurological conditions, but adherence is hard to establish. Dance might be a promising alternative; however, since patients with Huntington's disease (HD) suffer from rhythmic movement execution deficits, any metric dance practice must be avoided. OBJECTIVE Here we asked, if contemporary dance, a lyrical dance form, practiced for two hours per week over five months, might improve motor function, neuropsychiatric variables, cognition and brain volume of HD patients. METHODS Nineteen patients aged between 43 and 78 years with mild to moderate HD (TFC range 7-13, UHDRS motor score range 3-58) participated in this randomized, controlled pilot study (NCT 01842919). The primary outcome measure was total motor score. Secondary outcome measures were differences in brain structure, cognitive function, neuropsychiatric variables, apathy and quality of life. A semi-structured interview assessed participants' experiences. RESULTS Adherence to dance classes was very good. All participants completed 5 months of dance practice. Motor impairment (median [IQR] decreased from 28[6-51] to 27[7-33] for the dance group compared to an increase of 19[13-35] - 25[14-42] for usual care, Z = -2.44, p = 0.015). No other behavioral measures showed any changes.Brain volume increased in the medial superior parietal and paracentral lobule, in line with compensatory structural brain changes in areas supporting spatial and somatosensory processing. These changes were also reflected in patients' reports that contemporary dance altered the way they "felt and lived in their bodies". CONCLUSIONS Contemporary dance practice, through work on spatial and bodily representations, helps improve motor function in HD patients.
Collapse
Affiliation(s)
- Iris Trinkler
- Brain and Spine Institute (ICM), Sorbonne Université, Pitié-Salpêtrière University Hospital, Paris, France.,Current affiliation: Department of Sport Sciences, Adapted Physical Activity and Health Unit, University of Strasbourg, 14 Rue René Descartes, 67084 Strasbourg Cedex, France
| | | | | | - Marie-Lorraine Monin
- Brain and Spine Institute (ICM), Sorbonne Université, Pitié-Salpêtrière University Hospital, Paris, France.,AP-HP, Department of Genetics, Pitié-Salpêtrière University Hospital, Paris, France
| | - Sophie Tezenas du Montcel
- AP-HP, Department of Biostatistics and Medical Informatics, Pitié-Salpêtrière University Hospital, Paris, France.,Sorbonne University, Pierre Louis Institute of Epidemiology and Public Health, Paris, France
| | - Sonia Khani
- Brain and Spine Institute (ICM), Sorbonne Université, Pitié-Salpêtrière University Hospital, Paris, France
| | - Marcela Gargiulo
- AP-HP, Department of Genetics, Pitié-Salpêtrière University Hospital, Paris, France.,Laboratory of Clinical Psychology, Psychopathology and Psychoanalysis PCPP, EA 4056, University Paris Descartes, Sorbonne Paris City, Psychology Institute, Boulogne-Billancourt, France.,Institute of Myology, Pitié-Salpêtrière University Hospital, Paris, France
| | - Alexandra Durr
- Brain and Spine Institute (ICM), Sorbonne Université, Pitié-Salpêtrière University Hospital, Paris, France.,AP-HP, Department of Genetics, Pitié-Salpêtrière University Hospital, Paris, France
| |
Collapse
|
47
|
Moore MJ, Shalev N, Gillebert CR, Demeyere N. Dissociations within neglect-related reading impairments: Egocentric and allocentric neglect dyslexia. J Clin Exp Neuropsychol 2020; 42:352-362. [PMID: 32063093 PMCID: PMC7175469 DOI: 10.1080/13803395.2020.1715926] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Consistently lateralized reading errors are commonly understood as side-effects of visuospatial neglect impairment. There is however a qualitative difference between systematically omitting full words presented on one side of passages (egocentric neglect dyslexia) and lateralized errors when reading single words (allocentric neglect dyslexia). This study aims to investigate the relationship between egocentric and allocentric neglect dyslexia and visuospatial neglect. 1209 stroke survivors completed standardized reading and cancellation tests. Stringent criteria identified unambiguous cases of allocentric neglect dyslexia (N = 17) and egocentric neglect dyslexia (N = 35). These conditions were found to be doubly dissociated with all cases of egocentric and allocentric neglect dyslexia occurring independently. Allocentric neglect dyslexia was dissociated from both egocentric and allocentric visuospatial neglect. Additionally, two cases of allocentric neglect dyslexia which co-occurred with oppositely lateralized domain-general visuospatial neglect were identified. Conversely, all cases of egocentric neglect dyslexia were found in the presence of domain-general visuospatial neglect. These findings suggest that allocentric neglect dyslexia cannot be fully understood as a consequence of visuospatial neglect. In contrast, we found no evidence for a dissociation between egocentric neglect dyslexia and visuospatial neglect. These findings highlight the need for new, neglect dyslexia specific rehabilitation strategies to be designed and tested.
Collapse
Affiliation(s)
- Margaret Jane Moore
- Department of Experimental Psychology, Radcliffe Observatory Quarter, University of Oxford, Oxford, UK
| | - Nir Shalev
- Department of Experimental Psychology, Radcliffe Observatory Quarter, University of Oxford, Oxford, UK
| | - Celine R Gillebert
- Department of Experimental Psychology, Radcliffe Observatory Quarter, University of Oxford, Oxford, UK.,Department of Brain and Cognition, KU Leuven, Leuven, Belgium
| | - Nele Demeyere
- Department of Experimental Psychology, Radcliffe Observatory Quarter, University of Oxford, Oxford, UK
| |
Collapse
|
48
|
Tscherpel C, Hensel L, Lemberg K, Vollmer M, Volz LJ, Fink GR, Grefkes C. The differential roles of contralesional frontoparietal areas in cortical reorganization after stroke. Brain Stimul 2020; 13:614-624. [PMID: 32289686 DOI: 10.1016/j.brs.2020.01.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 01/10/2020] [Accepted: 01/28/2020] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Studies examining the contribution of contralesional brain regions to motor recovery after stroke have revealed conflicting results comprising both supporting and disturbing influences. Especially the relevance of contralesional brain regions beyond primary motor cortex (M1) has rarely been studied, particularly concerning the temporal dynamics post-stroke. METHODS We, therefore, used online transcranial magnetic stimulation (TMS) interference to longitudinally assess the role of contralesional (right) frontoparietal areas for recovery of hand motor function after left hemispheric stroke: contralesional M1, contralesional dorsal premotor cortex (dPMC), and contralesional anterior intraparietal sulcus (IPS). Fourteen stroke patients and sixteen age-matched healthy subjects performed motor tasks of varying complexity with their (paretic) right hand. Motor performance was quantified using three-dimensional kinematic data. All patients were assessed twice, (i) in the first week, and (ii) after more than three months post-stroke. RESULTS While we did not observe a significant effect of TMS interference on movement kinematics following the stimulation of contralesional M1 and dPMC in the first week post-stroke, we found improvements of motor performance upon interference with contralesional IPS across motor tasks early after stroke, an effect that persisted into the later phase. By contrast, for dPMC, TMS-induced deterioration of motor performance was only evident three months post-stroke, suggesting that a supportive role of contralesional premotor cortex might evolve with reorganization. CONCLUSION We here highlight time-sensitive and region-specific effects of contralesional frontoparietal areas after left hemisphere stroke, which may influence on neuromodulation regimes aiming at supporting recovery of motor function post-stroke.
Collapse
Affiliation(s)
- Caroline Tscherpel
- Department of Neurology, University Hospital Cologne, Cologne, Germany; Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Centre Jülich, Jülich, Germany
| | - Lukas Hensel
- Department of Neurology, University Hospital Cologne, Cologne, Germany
| | - Katharina Lemberg
- Department of Neurology, University Hospital Cologne, Cologne, Germany
| | - Mattias Vollmer
- Department of Neurology, University Hospital Cologne, Cologne, Germany
| | - Lukas J Volz
- Department of Neurology, University Hospital Cologne, Cologne, Germany
| | - Gereon R Fink
- Department of Neurology, University Hospital Cologne, Cologne, Germany; Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Centre Jülich, Jülich, Germany
| | - Christian Grefkes
- Department of Neurology, University Hospital Cologne, Cologne, Germany; Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Centre Jülich, Jülich, Germany.
| |
Collapse
|
49
|
Non-invasive brain stimulation to enhance cognitive rehabilitation after stroke. Neurosci Lett 2020; 719:133678. [DOI: 10.1016/j.neulet.2018.06.047] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 06/26/2018] [Indexed: 11/19/2022]
|
50
|
Fortis P, Ronchi R, Velardo V, Calzolari E, Banco E, Algeri L, Spada MS, Vallar G. A home-based prism adaptation training for neglect patients. Cortex 2020; 122:61-80. [DOI: 10.1016/j.cortex.2018.09.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/25/2018] [Accepted: 09/02/2018] [Indexed: 11/15/2022]
|