In schizophrenia, there is evidence for anomalies in the extension and plasticity of the peripersonal space (PPS), the portion of space surrounding our body, plastically shaped through motor experiences. An impaired multisensory integration at the PPS level would underpin the disembodiment, a core feature of the disorder linked to subjective perturbations of the sense of self (“Self-disorders”) and of the intersubjective dimension (“schizophrenic autism”).

The present study was aimed at: 1) exploring possible associations between PPS data, psychopathological dimensions, and subjective experiences in schizophrenia; 2) identifying a specific PPS profile in patients with early-onset schizophrenia.

A motor training with a tool was used to assess the PPS size and boundaries demarcation in twenty-seven schizophrenia outpatients. Moreover, they underwent a thorough psychopathological evaluation with the Positive And Negative Syndrome Scale (PANSS), the Examination of Anomalous Self Experience scale (EASE) and the Autism Rating Scale (ARS). Subsequently, the sample was divided into early (EOS) and adult-onset (AOS) subgroups, that were compared with respect to their PPS and psychopathological profiles.

PPS features (size and boundaries demarcation) were associated with PANSS negative score, subjective experiences of existential reorientation (EASE Domain 5 scores) and traits of schizophrenic autism (ARS scores; Fig. 1). PPS parameters (Fig. 2) and ARS scores, but not PANSS and EASE differentiated between early and adult-onset subgroups.

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Our results suggest a link between PPS patterns, negative symptoms, and disturbances of the subjective experience, particularly in the intersubjective domain, in schizophrenia. Moreover, they candidate specific PPS profiles and schizophrenic autism traits as EOS markers.

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Evidence from contemporary research has highlighted abnormal subjective pre-psychotic experiences as an expression of schizotropic vulnerability, for which trajectories up to First Rank Symptoms have been described. Embodiment is crucial to the conceptualisation of these experiences as the distinctive feature of schizophrenic phenomena. In fact, these are embedded in precise experiential frameworks such as Diminished Self-Affection and Hyperreflexivity, which constitute in nuce the experience of Dis-Embodiment. The latter responds poorly to conventional therapies, thereby affecting considerably the prognosis quoad valetudinem of Schizophrenia.

This study is intended to explore the use of specific psychomotor therapy protocols aimed at fostering Embodiment in patients with Schizophrenia, especially by investigating its efficacy and specificity on self-perceived body disorders, on characteristic motor abnormalities and on psychopathological dimensions.

The study involves the participation of 20 patients throughout 10 weekly 90-minute meetings of Embodied Psychomotor Therapy (EPT) in groups of approximately 5 participants. Despite being partially inspired by current approaches, EPT is conceived as a specific activity intended for patients with schizophrenia: each meeting combines intersubjective coordination activities (complex motor sequences, harmonious control of voluntary movement and movement in space, body-awareness), intra-subjective coordination (mirroring, demarcation and identification of one’s own boundaries, single-group dynamics), and exercises aimed at developing motor skills (proprioception, balance, posture, rhythm and speed). At the beginning of the activity (T0) and after 10 meetings (T1) participants will carry out self-administered and externally administered assessments, for the evaluation of motor (BMS, LOFOPT, BBS, AIMS, SRRS), psychopathological (PANSS, FBF, ABP), social functioning (SOFAS) and daily physical activity level (IPAQ) dimensions.

The study is still ongoing, due to limitations dictated by the Sars-CoV-2 pandemic. Preliminary results at T0 indicate a positive correlation between low levels of daily physical activity (IPAQ) and poor functioning (SOFAS). Significantly higher motor impairment with respect to the general population is also confirmed in all motor scales used. Moreover, a positive correlation between low levels of motor coordination (BMS_MC) and balance (BSS_TOT) was found together with basic symptoms related to loss of control or self-agency (FCQ_KO). Furthermore, the first results suggest an overall improvement in motor performance at T1.

The longitudinal analysis will enable the extent of the impact of EPT on functioning, motor and psychopathological dimensions of the patients to be determined, providing useful elements for planning specific rehabilitation interventions for schizophrenia.

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Patients with schizophrenia present severe communication difficulties in various linguistic areas. In the last two decades research has invested significant effort in trying to better characterize the linguistic profile of patients with schizophrenia, with the purpose to help and guide diagnosis and treatment. Moreover, speech data could be easily gathered through non-invasive techniques and are therefore seen as particularly promising by clinicians. However, surprisingly very little is known about interactional dialogue management, i.e. turn-taking, in these patients. ‘Schizophrenic autism’, the peculiar intersubjective experience also linked to anomalies in the sense of the self (‘Self-disorders’) presented by these patients, could be at the basis of an unusual turn-taking management.

The objective of the present study was to investigate turn-taking patterns of patients with schizophrenia and to explore their possible associations with psychopathological dimensions and subjective experiences.

We obtained double-channel audio-recordings from interviews with twenty patients with schizophrenia (SCZ) and twenty healthy controls (HC). Participants answered general questions to elicit spontaneous dialogues, to improve the ecological validity of the task. The audio files obtained were then analyzed with Praat, a software widely used in experimental phonetics. We subsequently quantified a set of conversational metrics (participant floor occupation, mutual silence, overlap between speakers, speaking turn and pause duration). Patients also underwent a thorough psychopathological and phenomenological evaluation with the Positive And Negative Syndrome Scale (PANSS), the Examination of Anomalous Self Experience scale (EASE) and the Autism Rating Scale (ARS).

Our results show that the SCZ group displayed a reduced participant floor occupation, an increased mutual silence, and shorter speaking turns as compared to the HC. (Fig. 1, Fig. 2). We found significant associations between conversational features and psychopathology (Fig. 3). Two multivariate linear regressions showed that the participant occupation floor and the average speaking turn duration (dependent variables) were negatively related to the severity of negative symptoms and Self-Disorders. Interestingly, Self-Disorders were the best predictors of conversational engagement.

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Our results, although preliminary, suggest the existence of peculiar turn-taking patterns in schizophrenia, linked to negative symptoms and disturbances of the subjective experience, particularly in the Self domain. Our results suggest also how the use of experimental linguistic methodology is applicable to clinical settings and underscores the importance of research projects in this field that are strongly interdisciplinary in both design and conduct.

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Self Disorders (SDs) are regarded as the subjective phenotype of Schizophrenia vulnerability. The EASE (Examination of Anomalous Self-Experiences) scale is the most detailed and widely used instrument to investigate SDs, but it requires long administration times and specific training. The IPASE (Inventory of Psychotic-like Anomalous Self-Experiences) scale might be a self-administered instrument of widespread use for an easier SDs investigation.

The present study was aimed at validating the Italian version of IPASE, testing its internal consistency and usability for a first level SDs survey. A secondary objective was to confirm the correlations between IPASE, EASE, main symptom dimensions, subjective bodily experiences, symptoms of schizophrenic autism as well as levels of global functioning.

Fifty patients with Schizophrenia were administered the IPASE scale in its Italian version, the Examination of Anomalous Self-Experiences scale (EASE), the Positive And Negative Symptoms Scale (PANSS), the Social and Occupational Functioning Assessment Scale (SOFAS) to assess global functioning, the Autism Rating Scale (ARS) and the Abnormal Bodily Phenomena questionnaire (ABPq). The internal consistency of IPASE in its Italian version was investigated and the correlations between IPASE, EASE, ABP, ARS, PANSS and SOFAS were explored.

The internal consistency of the Italian version of IPASE was high (α 0.97). The IPASE and EASE total scores were positively correlated with each other, as were many of the conceptually related subdomains of both scales. The IPASE score was negatively correlated with global functioning (SOFAS) and positively correlated with total PANSS scores and with PANSS negative domain. Moreover, the IPASE total score was positively correlated with autism dimension (ARS), while anomalies in subjective experience of the lived body were coherently correlated with higher scores in IPASE “somatization” subdomain.

The IPASE may be an easy instrument with high internal consistency for an initial investigation of SDs. IPASE domains appear to be correlated with the SDs investigated through EASE and with the main symptomatologic dimensions of Schizophrenia, in particular with negative symptoms. IPASE might also be a useful instrument for a first level investigation of subjective experiences concerning intersubjectivity and bodily dimensions.

SDs are confirmed to be a core feature of the schizophrenia psychopathology, with a adverse impact on global functioning.

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