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Front Hum Neurosci. 2018 Apr 6;12:132. doi: 10.3389/fnhum.2018.00132. eCollection 2018.

Minimal Self and Timing Disorders in Schizophrenia: A Case Report.

Author information

1
Centre Ressource de Réhabilitation Psychosociale et de Remédiation Cognitive, Centre Référent Lyonnais en Réhabilitation et en Remédiation Cognitive Hôpital du Vinatier, Centre National de la Recherche Scientifique UMR 5229, Lyon, France.
2
Service Universitaire de Psychiatrie, Hôpital Ste Marguerite, Marseille, France.
3
Laboratoire des Neurosciences Cognitives (UMR 7291), Aix-Marseille Université & Centre National de la Recherche Scientifique, Marseille, France.
4
Institut National de la Santé et de la Recherche Médicale U1114, Pôle de Psychiatrie, Fédération de Médecine Translationnelle de Strasbourg, Centre Hospitalier Régional Universitaire of Strasbourg, Université de Strasbourg, Paris, France.

Abstract

For years, phenomenological psychiatry has proposed that distortions of the temporal structure of consciousness contribute to the abnormal experiences described before schizophrenia emerges, and may relate to basic disturbances in consciousness of the self. However, considering that temporality refers mainly to an implicit aspect of our relationship with the world, disturbances in the temporal structure of consciousness remain difficult to access. Nonetheless, previous studies have shown a correlation between self disorders and the automatic ability to expect an event in time, suggesting timing is a key issue for the psychopathology of schizophrenia. Timing disorders may represent a target for cognitive remediation, but this requires that disorders can be demonstrated at an individual level. Since cognitive impairments in patients with schizophrenia are discrete, and there is no standardized timing exploration, we focused on timing impairments suggested to be related to self disorders. We present the case report of AF, a 22 year old man suffering from schizophrenia, with no antipsychotic intake. Although AF shows few positive and negative symptoms and has a normal neurocognitive assessment, he shows a high level of disturbance of Minimal Self Disorders (SDs) (assessed with the EASE scale). Moreover, AF has a rare ability to describe his self and time difficulties. An objective assessment of timing ability (variable foreperiod task) confirmed that AF had temporal impairments similar to those previously described in patients, i.e., a preserved ability to distinguish time intervals, but a difficulty to benefit from the passage of time to expect a visual stimulus. He presents additional difficulties in benefitting from temporal cues and adapting to changes in time delays. The impairments were ample enough to yield significant effects with analyses at the individual level. Although causal relationships between subjective and objective impairments cannot be established, the results show that exploring timing deficits at the individual level is possible in patients with schizophrenia. Besides, the results are consistent with hypotheses relating minimal self disorders (SDs) to timing difficulties. They suggest that both subjective and objective timing investigations should be developed further so that their use at an individual level can be generalized in clinical practice.

KEYWORDS:

hazard function; implicit; minimal self; schizophrenia; self disorders; simultaneity judgment; timing and time perception

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