Introduction
Attention deficits are a main neurocognitive feature of schizophrenia. These disorders have been observed in children with high genetic risk of schizophrenia and in the direct relatives of patients2-4. Moreover, attention seems to be the neurocognitive predictor of motor skill ability and social problem solving. Given the conceptual, neuroanatomical and neurofunctional complexity of attention, it cannot be reduced to a simple definition, linked to a single anatomic structure,or assessed by a single test. Attention is a central mechanism for the control of information processing, activating and inhibiting processes, and constituting a complex system that involves different networks in specific areas of the brain. Attention is constituted by several subsystems, each of which is responsible for different operations including selection or focalization, sustained attention and inhibitory attentional control. It is important to discriminate these different components of attention to correctly assess its role in schizophrenia, as they may be altered selectively. The components most studied in schizophrenia are selective attention and sustained attention. Posner established that selective attention involves performance when there are conflicts between signals. Attention has the role of selecting some signals for higher levels of processing while preventing other signals to access those same high levels of processing. Studies on the function of this component in schizophrenia are still controversial. Some authors have found that selective attention is intact for visual tasks, while others show that it has a specific role in the inability to correctly perceive reality in schizophrenia.
แนะนำAttention deficits are a main neurocognitive feature of schizophrenia. These disorders have been observed in children with high genetic risk of schizophrenia and in the direct relatives of patients2-4. Moreover, attention seems to be the neurocognitive predictor of motor skill ability and social problem solving. Given the conceptual, neuroanatomical and neurofunctional complexity of attention, it cannot be reduced to a simple definition, linked to a single anatomic structure,or assessed by a single test. Attention is a central mechanism for the control of information processing, activating and inhibiting processes, and constituting a complex system that involves different networks in specific areas of the brain. Attention is constituted by several subsystems, each of which is responsible for different operations including selection or focalization, sustained attention and inhibitory attentional control. It is important to discriminate these different components of attention to correctly assess its role in schizophrenia, as they may be altered selectively. The components most studied in schizophrenia are selective attention and sustained attention. Posner established that selective attention involves performance when there are conflicts between signals. Attention has the role of selecting some signals for higher levels of processing while preventing other signals to access those same high levels of processing. Studies on the function of this component in schizophrenia are still controversial. Some authors have found that selective attention is intact for visual tasks, while others show that it has a specific role in the inability to correctly perceive reality in schizophrenia.
การแปล กรุณารอสักครู่..
