Luigi Trojano

Professor of Neuropsychology

Name Luigi
Surname Trojano
Institution Università degli Studi della Campania Luigi Vanvitelli
E-Mail luigi.trojano@unicampania.it
Address Department of Psychology, University of Campania 'Luigi Vanvitelli', Viale Ellittico 31, 81100 Caserta, Italy

Member PUBLICATIONS

  • Visual pursuit of one's own face in disorders of consciousness: a quantitative analysis.

    Publication Date: 30/07/2018 on Brain injury
    by Trojano L, Moretta P, Masotta O, Loreto V, Estraneo A
    DOI: 10.1080/02699052.2018.1504117

    Eye behaviour is important to distinguish minimally conscious state (MCS) from vegetative state (VS).

  • Cognitive performance in multiple sclerosis: the contribution of intellectual enrichment and brain MRI measures.

    Publication Date: 26/05/2018 on Journal of neurology
    by Santangelo G, Bisecco A, Trojano L, Sacco R, Siciliano M, d'Ambrosio A, Della Corte M, Lavorgna L, Bonavita S, Tedeschi G, Gallo A
    DOI: 10.1007/s00415-018-8905-9

    Cognitive reserve (CR) is a construct that originates from the observation of poor correspondence between brain damage and clinical symptoms. The aim of the study was to investigate the association between cognitive reserve (CR), brain reserve (BR) and cognitive functions and to evaluate whether CR might attenuate/moderate the negative impact of brain atrophy and lesion load on cognitive functions in multiple sclerosis (MS). To achieve these aims, ninety-eight relapsing-remitting MS patients underwent the brief repeatable battery of neuropsychological tests and Stroop test (ST). CR was assessed by vocabulary-based estimate of lifetime intellectual enrichment. All patients underwent a 3T MRI to assess T2-lesion load and atrophy measures, including normalized gray matter and white matter (nWMV) volumes. The BR was evaluated by maximal lifetime brain volume expressed by intracranial volume (ICV). Hierarchical regressions were used to investigate whether higher BR and/or CR is related to better cognitive performances after controlling for potentially confounding factors. The ICV was not associated with any cognitive tests. Intellectual enrichment was positively associated with performance on tests assessing memory, attention and information processing speed, verbal fluency and inhibitory control. Significant relationship between nWMV and ST was moderated by intellectual enrichment. In conclusion, the findings suggested that CR seems to mitigate cognitive dysfunction in MS patients and can reduce the negative impact of brain atrophy on inhibitory control, relevant for integrity of instrumental activities of daily living.

  • Do medical complications impact long-term outcomes in prolonged disorders of consciousness?

    Publication Date: 25/05/2018 on Archives of physical medicine and rehabilitation
    by Estraneo A, Loreto V, Masotta Psy O, Pascarella A, Trojano L
    DOI: 10.1016/j.apmr.2018.04.024

    to investigate medical complications (MC) occuring within 6 months post-injury in brain-injured patients with prolonged disorders of consciousness (DoC) and to evaluate impact of MC on mortality and long-term clinical outcomes.

  • Psychometric properties of the Italian version of the Cognitive Reserve Scale (I-CRS).

    Publication Date: 04/05/2018 on Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology
    by Altieri M, Siciliano M, Pappacena S, Roldán-Tapia MD, Trojano L, Santangelo G
    DOI: 10.1007/s10072-018-3432-0

    The original definition of cognitive reserve (CR) refers to the individual differences in cognitive performance after a brain damage or pathology. Several proxies were proposed to evaluate CR (education, occupational attainment, premorbid IQ, leisure activities). Recently, some scales were developed to measure CR taking into account several cognitively stimulating activities. The aim of this study is to adapt the Cognitive Reserve Scale (I-CRS) for the Italian population and to explore its psychometric properties. I-CRS was administered to 547 healthy participants, ranging from 18 to 89 years old, along with neuropsychological and behavioral scales to evaluate cognitive functioning, depressive symptoms, and apathy. Cronbach's α, corrected item-total correlations, and the inter-item correlation matrix were calculated to evaluate the psychometric properties of the scale. Linear regression analysis was performed to build a correction grid of the I-CRS according to demographic variables. Correlational analyses were performed to explore the relationships between I-CRS and neuropsychological and behavioral scales. We found that age, sex, and education influenced the I-CRS score. Young adults and adults obtained higher I-CRS scores than elderly adults; women and participants with high educational attainment scored higher on I-CRS than men and participants with low education. I-CRS score correlated poorly with cognitive and depression scale scores, but moderately with apathy scale scores. I-CRS showed good psychometric properties and seemed to be a useful tool to assess CR in every adult life stage. Moreover, our findings suggest that apathy rather than depressive symptoms may interfere with the building of CR across the lifespan.

  • Cerebellar contribution to spatial realignment: A tDCS study during multiple-step prism adaptation.

    Publication Date: 01/04/2018 on Neuropsychologia
    by Panico F, Sagliano L, Nozzolillo C, Trojano L, Rossetti Y
    DOI: 10.1016/j.neuropsychologia.2018.03.008

    Several processes are devoted to error reduction in response to a visual displacement, such as the one induced by wedge prisms. Strategic calibration and spatial realignment contribute to the iteratively process that allows a progressive adjustment of motor commands to reduce the magnitude of errors. Isolating the specific contributions to motor behaviour coming from these distinct processes is not possible using traditional single-step Prism Adaptation (PA), where participants are directly exposed to full prismatic shift. Here, we selectively investigated the effect of realignment on motor behaviour by means of a PA paradigm (the multiple-step PA) that allows to elude the development of strategic calibration. We tested for a specific cerebellar contribution to realignment by means of transcranial Direct Current Stimulation (tDCS) in healthy subjects. Confirming and expanding previous imaging and stimulation results, our study causally demonstrates cerebellar involvement in spatial realignment. Additionally, our results point to a possible contribution of the cerebellum in automatic online control. The role of a cortico-cerebellar network accounting for this results and possible clinical applications are proposed and discussed.

  • Famous people recognition through personal name: a normative study.

    Publication Date: 01/04/2018 on Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology
    by Piccininni C, Quaranta D, Papagno C, Trojano L, Ferrara A, Luzzi S, Carlesimo GA, Marra C, Gainotti G
    DOI: 10.1007/s10072-018-3251-3

    In this normative study, we investigated famous people recognition through personal name, using as stimuli the names of the same 40 Italian famous persons whose faces and voices had been utilized for the normative study of the Famous People Recognition Battery. For each famous people, we assessed name familiarity, person identification (when the name had been considered as familiar), and false alarms. The investigation was carried out on 143 normal subjects who varied in age and education. Name familiarity and semantic scores were affected by educational level, whereas age influenced false alarms. A comparison between results obtained with names in this research and with faces and voices of the same famous people in our previous study showed that familiarity scores were higher for personal names than those for faces and voices, which obtained the worst scores. Person identification scores were not significantly different from names and from faces, but both these scores were significantly higher than the semantic scores obtained by voices. Taken together, these results are inconsistent with the influential interactive activation and competition model of person recognition.

  • Cognitive and behavioral disorders in Parkinson's disease: an update. I: cognitive impairments.

    Publication Date: 01/02/2018 on Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology
    by Papagno C, Trojano L
    DOI: 10.1007/s10072-017-3154-8

    Parkinson's disease (PD) is a progressive neurodegenerative disease characterized by motor symptoms such as rigidity, rest tremor, and bradykinesia. However, a growing body of evidence demonstrated that PD encompasses several non-motor disturbances as well, such as cognitive impairment. Cognitive defects can be present since early stages of the disease but tend to dominate the clinical picture as the disease progresses. Around 40% of patients with PD present with cognitive impairments in several cognitive domains including attention, working memory and executive functions, language, visuospatial skills, and episodic memory; in later stages of the disease, cognitive defects and associated behavioral disorders concur to determine clinically relevant PD-associated dementia. Part of these defects is ascribed to a dopamine-dependent dysfunction of fronto-striatal pathways, but there is a considerable heterogeneity in the cognitive impairments as well as a suggestion of the role of other neurotransmitter systems, such as the cholinergic one, mainly responsible for Parkinson-dementia syndrome. In this paper, we review recent literature with particular attention to the last 5 years on the main cognitive deficits described in PD patients as well as on the hypothesized neuro-functional substrate of such impairments. Finally, we provide some suggestions on how to test cognitive functions in PD appropriately.

  • Prospective memory is dysfunctional in migraine without aura.

    Publication Date: 01/01/2018 on Cephalalgia : an international journal of headache
    by Santangelo G, Russo A, Tessitore A, Garramone F, Silvestro M, Della Mura MR, Marcuccio L, Fornaro I, Trojano L, Tedeschi G
    DOI: 10.1177/0333102418758280

    Introduction Prospective memory is the ability to carry out a delayed intended action, so to maintain and retrieve future plans, goals and activities. Deficits of prospective memory negatively impact on patients and caregivers' everyday living and determine poor adherence to treatment. Since frontal regions are involved in both event- and time-based prospective memory tasks and are impaired in migraine without aura, defects of prospective memory might occur in migraine without aura patients; until now this issue has not been investigated. The aim of the current study was to explore time- versus event-based prospective memory in migraine without aura. Patients and methods Ninty-one consecutive migraine without aura patients and 84 healthy subjects were enrolled in the study. They underwent a standardized measure of prospective memory evaluating both time-based and event-based prospective memory, and the Montreal Cognitive Assessment assessing global cognitive status. Moreover, all participants completed the Beck Depression Inventory-II and a self-administered version of the Apathy Evaluation Scale, to assess severity of depressive symptoms and apathy, respectively. Results Migraine without aura and healthy subjects did not differ on demographic aspects (i.e. age, education and gender). However, individuals with migraine without aura demonstrated impaired prospective memory performance compared to healthy subjects, with a greater impairment demonstrated for the time-based tasks. Within the migraine without aura group, no significant association was found between prospective memory performance and clinical scores, apathy, and depression. Conclusions Individuals with migraine without aura experience particular difficulty executing a future intention; therefore, migraine without aura is associated with dysfunction of prospective memory.

  • Neuropsychological profile in parents of adult phenylketonuria patients.

    Publication Date: 01/01/2018 on Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology
    by Santangelo G, Piscopo F, Santangelo F, Trojano L
    DOI: 10.1007/s10072-017-3181-5

    Phenylketonuria (PKU) is a disorder caused by an inborn error of metabolism, causing cognitive and behavioral disorders when not treated. Heterozygotes (i.e., patients' parents) were described with low verbal intelligence quotient, but no study systematically investigated cognitive functions in PKU parents. To obtain a neuropsychological profile in heterozygotes, we compared cognitive performance of heterozygotes and healthy controls (HC) on cognitive battery. Twelve heterozygotes and 14 HCs underwent standardized neuropsychological tasks assessing frontal/executive functions, memory, and visuospatial abilities. No significant difference between heterozygotes and HC was found on demographic aspects. Heterozygotes performed worse than HC on immediate verbal recall, on test assessing set-shifting, divided attention, and sensitivity to processing speed. No difference was found on the remaining cognitive tests.In conclusions, we observed less efficient control/executive functions in heterozygotes when compared to HCs. Further studies in large sample of heterozygotes should be performed to confirm our results.

  • Cognitive and behavioral disorders in Parkinson's disease: an update. II: behavioral disorders.

    Publication Date: 01/01/2018 on Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology
    by Trojano L, Papagno C
    DOI: 10.1007/s10072-017-3155-7

    Patients with Parkinson's disease (PD) can experience several behavioral symptoms, such as apathy, agitation, hypersexuality, stereotypic movements, pathological gambling, abuse of antiparkinsonian drugs, and REM sleep behavioral disorders. Psychoses and hallucinations, depression and anxiety disorders, and difficulties in recognizing and experiencing emotions also impair behavior and can cause severe psychosocial problems in patients with PD. Symptoms can be present since early stages of the disease, sometimes even before the appearance of classical motor symptoms, likely in relation to dopamine depletion in basal ganglia and/or to dysfunctions of other neurotrasmitter systems, and others can develop later, in some cases in relation to dopaminergic treatment. In this paper, we review recent literature, with particular attention to the last 5 years, on the main behavioral and emotional disturbances described in PD patients as well as the hypothesized neurofunctional substrate of such impairments. Finally, we provide some suggestions on the most suitable instruments to check and assess PD-associated behavioral defects over time.