Collaborative Antwerp Psychiatric Research Institute (CAPRI), University of Antwerp, Antwerp, Belgium.
Published: May 2016
AI Article Synopsis
Article Abstract
Background/aims: In addition to affective and cognitive symptomatology, psychomotor deficits are known to be present in bipolar disorder (BD). Psychomotor functioning includes all of the processes necessary for completing a movement, from planning to initiation and execution. While these psychomotor symptoms have been studied extensively in schizophrenia and major depressive disorder, only simple measures have been conducted in BD. The present study examines psychomotor functioning in BD.
Methods: Twenty-two euthymic BD patients and 21 healthy controls performed three computerized copying tasks varying in cognitive load. Movement times (MT), reflecting fine motor processing, and initiation times (IT), reflecting cognitive processing of visual-spatial information, were separately measured in each group.
Results: The BD patients had longer IT but not MT in the simplest task and the opposite pattern of longer MT but not IT in the complex task. However, when controlling for residual mood symptoms, the MT were no longer significantly slower in the BD group.
Conclusions: The longer MT and IT in BD reflect overall psychomotor slowing. Specifically, the results provide evidence for cognitive slowing in BD. In addition, the longer MT in the complex task reflect a slowed motor component of movement when the cognitive load is high and when depressive symptoms are present. These findings extend the current knowledge of the nature of psychomotor slowing in BD and may have important prognostic implications for patients.
Introduction: Biallelic variants in QARS1, a house-keeping gene involved in protein synthesis, cause a rare encephalopathy classically characterized by severe developmental delay, drug-resistant neonatal-onset epilepsy, microcephaly, and brain atrophy. We aim to raise awareness on mild QARS1-related phenotypes describing a 6-year-old patient.
Motor abnormalities, including psychomotor slowing, are prevalent in a large proportion of individuals with schizophrenia. While postural control deficits have been observed in this population, the impact of motor abnormalities on postural stability remains unclear. This study aimed to objectively evaluate postural stability in patients with and without psychomotor slowing and healthy controls.
The immediate space surrounding the hands has often been termed the peri-hand space (PHS), and is characterized by a smaller reaction time (RT), better detection, and enhanced accuracy for stimuli presented in this space, relative to those stimuli presented beyond this space. Such behavioral changes have been explained in terms of a biased allocation of cognitive resources such as perception, attention, and memory, for the efficient processing of information presented in the PHS. However, in two experiments, the current study shows that these cognitive biases seem to have an underlying temporal basis.
School of Psychology, Beijing Sport University, Beijing, China; Laboratory of Sports Stress and Adaptation of General Administration of Sport, China. Electronic address:
Head fake is a common deceptive action in basketball that can effectively disrupt opponents and induce errors. This study investigated post-error behavioral adjustment and neural changes associated with head-fake action and related action cues across different response‒stimulus intervals (RSIs). Participants were asked to respond to the central target player's pass direction, ignoring the head direction of the target person and the flankers.
