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  1. Article ; Online: Contribution of the Cerebellum and the Basal Ganglia to Language Production: Speech, Word Fluency, and Sentence Construction-Evidence from Pathology.

    Silveri, Maria Caterina

    Cerebellum (London, England)

    2020  Volume 20, Issue 2, Page(s) 282–294

    Abstract: Evidence reported in recent decades increasingly confirms that both the cerebellum and the basal ganglia, which are primarily involved in movement control, also have a significant role in a vast range of cognitive and affective functions. Evidence from ... ...

    Abstract Evidence reported in recent decades increasingly confirms that both the cerebellum and the basal ganglia, which are primarily involved in movement control, also have a significant role in a vast range of cognitive and affective functions. Evidence from pathology indicates that the disorders of some aspects of language production which follow damage of the cerebellum or respectively basal ganglia, i.e., disorders of speech, word fluency, and sentence construction, have identifiable neuropsychological profiles and that most manifestations can be specifically attributed to the dysfunctions of mechanisms supported by one or the other of these structures. The cerebellum and the basal ganglia are reciprocally interconnected. Thus, it is plausible that some disorders observed when damage involves one of these structures could be remote effects of abnormal activity in the other. However, in a purely clinical-neuropsychological perspective, primary and remote effects in the network are difficult to disentangle. Functional neuroimaging and non-invasive brain stimulation techniques likely represent the indispensable support for achieving this goal.
    MeSH term(s) Basal Ganglia/physiology ; Cerebellum/physiology ; Humans ; Language ; Speech/physiology
    Language English
    Publishing date 2020-10-29
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2112586-7
    ISSN 1473-4230 ; 1473-4222
    ISSN (online) 1473-4230
    ISSN 1473-4222
    DOI 10.1007/s12311-020-01207-6
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    Zs.A 5795: Show issues Location:
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  2. Article ; Online: Clinical and MRI characterization of apraxic syndrome in corticobasal degeneration: A single-case study.

    Silveri, Maria Caterina / Lo Monaco, Maria Rita / Tondinelli, Alice / Leggio, Maria / Olivito, Giusy

    The Clinical neuropsychologist

    2023  Volume 38, Issue 2, Page(s) 508–528

    Abstract: Objective: ...

    Abstract Objective:
    MeSH term(s) Humans ; Corticobasal Degeneration ; Neuropsychological Tests ; Apraxias ; Magnetic Resonance Imaging ; Atrophy/complications
    Language English
    Publishing date 2023-09-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 639080-8
    ISSN 1744-4144 ; 0920-1637 ; 1385-4046
    ISSN (online) 1744-4144
    ISSN 0920-1637 ; 1385-4046
    DOI 10.1080/13854046.2023.2219469
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    Zs.B 3065: Show issues Location:
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  3. Article ; Online: Decision-making under ambiguity and risk and executive functions in Parkinson's disease patients: A scoping review of the studies investigating the Iowa Gambling Task and the Game of Dice.

    Colautti, Laura / Iannello, Paola / Silveri, Maria Caterina / Antonietti, Alessandro

    Cognitive, affective & behavioral neuroscience

    2023  Volume 23, Issue 5, Page(s) 1225–1243

    Abstract: Evidence shows that patients affected by Parkinson's disease (PD) display the tendency toward making risky choices. This is due, at least in part, to the pathophysiological characteristics of the disease that affects neural areas underlying decision ... ...

    Abstract Evidence shows that patients affected by Parkinson's disease (PD) display the tendency toward making risky choices. This is due, at least in part, to the pathophysiological characteristics of the disease that affects neural areas underlying decision making (DM), in which a pivotal role is played by nonmotor corticostriatal circuits and dopamine. Executive functions (EFs), which can be impaired by PD as well, may sustain optimal choices in DM processes. However, few studies have investigated whether EFs can support PD patients to make good decisions. Adopting the scoping review approach, the present article is designed to deepen the cognitive mechanisms of DM under conditions of ambiguity and risk (that are conditions common to everyday life decisions) in PD patients without impulse control disorders. We focused our attention on the Iowa Gambling Task and the Game of Dice Task, because they are the most commonly used and reliable tasks to assess DM under ambiguity and under risk, respectively, and analyzed the performances in such tasks and their relationships with EFs tests in PD patients. The analysis supported the relationships between EFs and DM performance, especially when a higher cognitive load is required to make optimal decisions, as it happens under conditions of risk. Possible knowledge gaps and further research directions are suggested to better understand DM mechanisms in PD sustaining patients' cognitive functioning and preventing negative consequences in everyday life derived from suboptimal decisions.
    MeSH term(s) Humans ; Gambling/psychology ; Executive Function/physiology ; Risk-Taking ; Parkinson Disease/complications ; Decision Making/physiology ; Neuropsychological Tests
    Language English
    Publishing date 2023-05-17
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 2029088-3
    ISSN 1531-135X ; 1530-7026
    ISSN (online) 1531-135X
    ISSN 1530-7026
    DOI 10.3758/s13415-023-01106-3
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    Zs.A 5947: Show issues Location:
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  4. Article ; Online: The rising role of cognitive reserve and associated compensatory brain networks in spinocerebellar ataxia type 2.

    Siciliano, Libera / Olivito, Giusy / Urbini, Nicole / Silveri, Maria Caterina / Leggio, Maria

    Journal of neurology

    2023  Volume 270, Issue 10, Page(s) 5071–5084

    Abstract: Pre-existing or enhanced cognitive abilities influence symptom onset and severity in neurodegenerative diseases, which improve an individual's ability to deal with neurodegeneration. This process is named cognitive reserve (CR), and it has acquired high ... ...

    Abstract Pre-existing or enhanced cognitive abilities influence symptom onset and severity in neurodegenerative diseases, which improve an individual's ability to deal with neurodegeneration. This process is named cognitive reserve (CR), and it has acquired high visibility in the field of neurodegeneration. However, the investigation of CR has been neglected in the context of cerebellar neurodegenerative disorders. The present study assessed CR and its impact on cognitive abilities in spinocerebellar ataxia type 2 (SCA2), which is a rare cerebellar neurodegenerative disease. We investigated the existence of CR networks in terms of compensatory mechanisms and neural reserve driven by increased cerebello-cerebral functional connectivity. The CR of 12 SCA2 patients was assessed using the Cognitive Reserve Index Questionnaire (CRIq), which was developed for appraising life-span CR. Patients underwent several neuropsychological tests to evaluate cognitive functioning and a functional MRI examination. Network based statistics analysis was used to assess functional brain networks. The results revealed significant correlations of CRIq measures with cognitive domains and patterns of increased connectivity in specific cerebellar and cerebral regions, which likely indicated CR networks. This study showed that CR may influence disease-related cognitive deficits, and it was related to the effective use of specific cerebello-cerebral networks that reflect a CR biomarker.
    MeSH term(s) Humans ; Cognitive Reserve ; Spinocerebellar Ataxias/complications ; Spinocerebellar Ataxias/diagnostic imaging ; Brain/diagnostic imaging ; Cerebellum/diagnostic imaging ; Magnetic Resonance Imaging/methods ; Neuropsychological Tests
    Language English
    Publishing date 2023-07-08
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 187050-6
    ISSN 1432-1459 ; 0340-5354 ; 0012-1037 ; 0939-1517 ; 1619-800X
    ISSN (online) 1432-1459
    ISSN 0340-5354 ; 0012-1037 ; 0939-1517 ; 1619-800X
    DOI 10.1007/s00415-023-11855-3
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  5. Article: Resting-state functional connectivity is modulated by cognitive reserve in early Parkinson's disease.

    Di Tella, Sonia / De Marco, Matteo / Baglio, Francesca / Silveri, Maria Caterina / Venneri, Annalena

    Frontiers in psychology

    2023  Volume 14, Page(s) 1207988

    Abstract: Background: Fronto-striatal disconnection is thought to be at the basis of dysexecutive symptoms in patients with Parkinson's disease (PD). Multiple reserve-related processes may offer resilience against functional decline. Among these, cognitive ... ...

    Abstract Background: Fronto-striatal disconnection is thought to be at the basis of dysexecutive symptoms in patients with Parkinson's disease (PD). Multiple reserve-related processes may offer resilience against functional decline. Among these, cognitive reserve (CR) refers to the adaptability of cognitive processes.
    Objective: To test the hypothesis that functional connectivity of pathways associated with executive dysfunction in PD is modulated by CR.
    Methods: Twenty-six PD patients and 24 controls underwent resting-state functional magnetic resonance imaging. Functional connectivity was explored with independent component analysis and seed-based approaches. The following networks were selected from the outcome of the independent component analysis: default-mode (DMN), left and right fronto-parietal (l/rFPN), salience (SalN), sensorimotor (SMN), and occipital visual (OVN). Seed regions were selected in the substantia nigra and in the dorsolateral and ventromedial prefrontal cortex for the assessment of seed-based functional connectivity maps. Educational and occupational attainments were used as CR proxies.
    Results: Compared with their counterparts with high CR, PD individuals with low CR had reduced posterior DMN functional connectivity in the anterior cingulate and basal ganglia, and bilaterally reduced connectivity in fronto-parietal regions within the networks defined by the dorsolateral and ventrolateral prefrontal seeds. Hyper-connectivity was detected within medial prefrontal regions when comparing low-CR PD with low-CR controls.
    Conclusion: CR may exert a modulatory effect on functional connectivity in basal ganglia and executive-attentional fronto-parietal networks. In PD patients with low CR, attentional control networks seem to be downregulated, whereas higher recruitment of medial frontal regions suggests compensation via an upregulation mechanism. This upregulation might contribute to maintaining efficient cognitive functioning when posterior cortical function is progressively reduced.
    Language English
    Publishing date 2023-08-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2563826-9
    ISSN 1664-1078
    ISSN 1664-1078
    DOI 10.3389/fpsyg.2023.1207988
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  6. Article: "

    Siciliano, Libera / Olivito, Giusy / Urbini, Nicole / Silveri, Maria Caterina / Leggio, Maria

    Biomedicines

    2022  Volume 10, Issue 9

    Abstract: The ability to resiliently cope with neuropathological lesions is a key scientific concern. Accordingly, this study aims to investigate whether motor reserve (MR), likely to be boosted by exercise engagement in a lifetime, affects motor symptom severity, ...

    Abstract The ability to resiliently cope with neuropathological lesions is a key scientific concern. Accordingly, this study aims to investigate whether motor reserve (MR), likely to be boosted by exercise engagement in a lifetime, affects motor symptom severity, cognitive functioning, and functional brain networks in spinocerebellar ataxia type 2 (SCA2)-a cerebellar neurodegenerative disease. The MR of 12 SCA2 patients was assessed using the Motor Reserve Index Questionnaire (MRIq), developed ad hoc for estimating lifespan MR. The International Cooperative Ataxia Rating Scale was used to assess clinical motor features, and neuropsychological tests were used to evaluate cognitive functioning. Patients underwent an MRI examination, and network-based statistics (NBS) analysis was carried out to detect patterns of functional connectivity (FC). Significant correlations were found between MRIq measures and the severity of motor symptoms, educational and intellectual levels, executive function, and processing speed. NBS analysis revealed a higher FC within subnetworks consisting of specific cerebellar and cerebral areas. FC patterns were positively correlated with MRIq measures, likely indicating the identification of an MR network. The identified network might reflect a biomarker likely to underlie MR, influenced by education and cognitive functioning, and impacting the severity of motor symptoms.
    Language English
    Publishing date 2022-09-02
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2720867-9
    ISSN 2227-9059
    ISSN 2227-9059
    DOI 10.3390/biomedicines10092166
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  7. Article ; Online: Social cognition in Parkinson's disease and functional movement disorders.

    Silveri, Maria Caterina / Lo Monaco, Maria Rita / Tondinelli, Alice / Petracca, Martina / Zinzi, Paola / Fragapane, Serena / Pozzi, Gino / Pagnini, Francesco / Bentivoglio, Anna Rita / Di Tella, Sonia

    Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology

    2024  

    Abstract: Introduction: Functional movement disorders (FMD) can overlap with Parkinson's disease (PD), and distinguishing between the two clinical conditions can be complex. Framing social cognition (theory of mind) (TOM) disorder, attention deficit, and ... ...

    Abstract Introduction: Functional movement disorders (FMD) can overlap with Parkinson's disease (PD), and distinguishing between the two clinical conditions can be complex. Framing social cognition (theory of mind) (TOM) disorder, attention deficit, and psychodynamic features of FMD and PD may improve diagnosis.
    Methods: Subjects with FMD and PD and healthy controls (HC) were administered tasks assessing TOM abilities and attention. The psychodynamic hypothesis of conversion disorder was explored by a questionnaire assessing dissociative symptoms. A comprehensive battery of neuropsychological tasks was also administered to FMD and PD.
    Results: Although both FMD and PD scored lower than HC on all TOM tests, significant correlations between TOM and neuropsychological tasks were found only in PD but not in FMD. Only PD showed a reduction in attentional control. Dissociative symptoms occurred only in FMD.
    Discussion: Cognitive-affective disturbances are real in FMD, whereas they are largely dependent on cognitive impairment in PD. Attentional control is preserved in FMD compared to PD, consistent with the hypothesis that overload of voluntary attentional orientation may be at the basis of the onset of functional motor symptoms. On a psychodynamic level, the confirmation of dissociative symptoms in FMD supports the conversion disorder hypothesis.
    Conclusion: FMD and PD can be distinguished on an affective and cognitive level. At the same time, however, the objective difficulty often encountered in distinguishing between the two pathologies draws attention to how blurred the boundary between 'organic' and 'functional' can be.
    Language English
    Publishing date 2024-03-23
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 2016546-8
    ISSN 1590-3478 ; 1590-1874
    ISSN (online) 1590-3478
    ISSN 1590-1874
    DOI 10.1007/s10072-024-07452-5
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    Zs.A 1877: Show issues Location:
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  8. Article ; Online: Decision making in Parkinson's disease: An analysis of the studies using the Iowa Gambling Task.

    Colautti, Laura / Iannello, Paola / Silveri, Maria Caterina / Antonietti, Alessandro

    The European journal of neuroscience

    2021  Volume 54, Issue 10, Page(s) 7513–7549

    Abstract: In Parkinson's disease (PD) impairments in decision making can occur, in particular because of the tendency toward risky and rewarding options. The Iowa Gambling Task has been widely used to investigate decision processes involving these options. The ... ...

    Abstract In Parkinson's disease (PD) impairments in decision making can occur, in particular because of the tendency toward risky and rewarding options. The Iowa Gambling Task has been widely used to investigate decision processes involving these options. The task assesses the ability to manage risk and to learn from feedback. The present paper aims at critically examining those studies in which this task has been administered to PD patients, in order to understand possible anomalies in patients' decision processes and which variables are responsible for that. A meta-analysis has been conducted as well. Features of the task, sociodemographic and clinical aspects (including daily drugs intake), cognitive conditions and emotional disorders of the patients have been taken into account. Neural correlates of decision-making competences were considered. It emerged that PD patients show a trend of preference toward risky choices, probably due to an impairment in anticipating the unrewarding consequences or to an insensitiveness to punishment. The possible role played by dopamine medications in decision making under uncertain conditions, affecting basal ganglia and structures involved in the limbic loop, was discussed. Attention has been focused on some aspects that need to be investigated in further research, in order to delve into this issue and promote patients' quality of life.
    MeSH term(s) Decision Making ; Gambling ; Humans ; Neuropsychological Tests ; Parkinson Disease/drug therapy ; Quality of Life
    Language English
    Publishing date 2021-11-09
    Publishing country France
    Document type Journal Article ; Meta-Analysis ; Review
    ZDB-ID 645180-9
    ISSN 1460-9568 ; 0953-816X
    ISSN (online) 1460-9568
    ISSN 0953-816X
    DOI 10.1111/ejn.15497
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    Zs.A 2548: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (2.OG)
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  9. Article ; Online: The rehabilitation of object agnosia and prosopagnosia: A systematic review.

    Gobbo, Silvia / Calati, Raffaella / Silveri, Maria Caterina / Pini, Elisa / Daini, Roberta

    Restorative neurology and neuroscience

    2022  Volume 40, Issue 4-6, Page(s) 217–240

    Abstract: Background: Agnosia for objects is often overlooked in neuropsychology, especially with respect to rehabilitation. Prosopagnosia has been studied more extensively, yet there have been few attempts at training it. The lack of training protocols may ... ...

    Abstract Background: Agnosia for objects is often overlooked in neuropsychology, especially with respect to rehabilitation. Prosopagnosia has been studied more extensively, yet there have been few attempts at training it. The lack of training protocols may partially be accounted for by their relatively low incidence and specificity to sensory modality. However, finding effective rehabilitations for such deficits may help to reduce their impact on the social and psychological functioning of individuals.
    Objective: Our aim in this study was to provide clinicians and researchers with useful information with which to conduct new studies on the rehabilitation of object agnosia and prosopagnosia. To accomplish this, we performed a systematic and comprehensive review of the effect of neuropsychological rehabilitation on visual object and prosopagnosia.
    Methods: The Preferred Reporting Items for Systematic reviews and Meta-Analyses guidelines were followed. In addition, the Single-Case Experimental Design (SCED) and the Critical Appraisal Skills Programme (CASP) scales were used to assess the quality of reporting.
    Results: Seven articles regarding object agnosia, eight articles describing treatments for prosopagnosia, and two articles describing treatments for both deficits were included.
    Conclusions: In the light of the studies reviewed, treatments based on analysis of parts seem effective for object agnosia, while prosopagnosia appears to benefit most from treatments relying on holistic/configural processing. However, more attempts at rehabilitation of face and object agnosia are needed to clarify the mechanisms of these processes and possible rehabilitations. Moreover, a publication bias could mask a broader attempt to find effective treatments for visual agnosia and leaving out studies that are potentially more informative.
    Language English
    Publishing date 2022-09-10
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1017098-4
    ISSN 1878-3627 ; 0922-6028
    ISSN (online) 1878-3627
    ISSN 0922-6028
    DOI 10.3233/RNN-211234
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    Zs.A 2792: Show issues Location:
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  10. Article ; Online: The facial emotion recognition deficit in Parkinson's disease: Implications of a visual scanning strategy.

    Ciccarelli, Nicoletta / Anzuino, Isabella / Pepe, Fulvio / Magni, Eugenio / Traficante, Daniela / Silveri, Maria Caterina

    Neuropsychology

    2022  Volume 36, Issue 4, Page(s) 279–287

    Abstract: Objective: We explored the relationship between a visual scanning strategy and a facial emotion recognition deficit in Parkinson's disease (PD).: Method: Thirty nondemented PD patients (balanced for symptom side at onset) and 20 age, education and ... ...

    Abstract Objective: We explored the relationship between a visual scanning strategy and a facial emotion recognition deficit in Parkinson's disease (PD).
    Method: Thirty nondemented PD patients (balanced for symptom side at onset) and 20 age, education and gender-matched healthy controls (HC) were enrolled. The PD group underwent a comprehensive neuropsychological battery also exploring the executive functions. In both groups, eye movements were recorded while subjects categorized facial emotion from Ekman's 60-faces test. We were particularly interested in the location of fixations on facial pictures (top vs. bottom) and in emotional valence (positive vs. negative). We also compared performance of the two groups on a verbal emotion attribution task.
    Results: Compared to HC, PD patients performed worse on visual recognition of negative emotions such as anger, fear, and sadness (where the upper part of the face is more informative than the lower part); the two groups did not differ on the verbal emotion attribution task. HC modified their visual scanning strategy (both number and overall time duration of fixations) according to the valence of the emotion; by contrast, PD showed the same pattern regardless of the valence. In the PD group, accuracy in the visual recognition of negative emotions and fixation pattern correlated with performance on tasks exploring executive functions; however, no associations were observed with severity of motor state.
    Conclusions: Our results suggest that visual scanning strategy contributes significantly to the facial emotion recognition deficit of PD patients, especially at a "high level" related to cognitive control of eye movements. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
    MeSH term(s) Emotions ; Facial Expression ; Facial Recognition ; Humans ; Neuropsychological Tests ; Parkinson Disease/complications ; Parkinson Disease/diagnostic imaging ; Parkinson Disease/psychology
    Language English
    Publishing date 2022-03-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1042412-x
    ISSN 1931-1559 ; 0894-4105
    ISSN (online) 1931-1559
    ISSN 0894-4105
    DOI 10.1037/neu0000802
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