Implicit Timing as the Missing Link between Neurobiological and Self Disorders in Schizophrenia?

Area of Science:

• Neuroscience
• Psychiatry
• Cognitive Science

Background:

• Schizophrenia is characterized by profound self-disorders, including impaired sense of agency and disrupted consciousness.
• Patients experience difficulties maintaining a coherent sense of self over time, potentially linked to thought fragmentation.

Purpose of the Study:

• To review experimental evidence on self-disorders in schizophrenia.
• To propose that impaired sequencing of action and perception, involving the cerebellum, underlies these deficits.
• To explore the role of cerebellar networks and neurotransmitter systems in schizophrenia-related self-disorders.

Main Methods:

• Review of existing experimental literature on motor control and temporal signal processing in schizophrenia.
• Examination of neuroanatomical and physiological properties of the cerebellum.
• Integration of findings with knowledge of neurotransmitter systems (dopamine, glutamate, GABA) and brain dynamics in schizophrenia.

Main Results:

• Schizophrenia patients exhibit impairments in motor control mechanisms and temporal signal processing.
• The sequencing of action and perception is identified as a critical factor in self-disorder.
• Evidence suggests the involvement of millisecond-timescale processing and cerebellar networks.

Conclusions:

• Impaired sequencing of action and perception, particularly at the millisecond timescale, contributes significantly to self-disorders in schizophrenia.
• Disruptions in cerebellar-involved networks, potentially due to neurotransmitter imbalances, may explain reduced attunement with the external world and self.
• The cerebellum's role in timing and network communication is crucial for understanding these complex symptoms.