Evaluating and modeling human performance on even simple tasks requires a great deal of attention to millisecond-level cognitive and perceptual-motor operations. Modeling human performance in a task often requires that special care be taken to understand how these millisecond level operations are interleaved and how they evolve during the execution of the task. In modeling a simple decision-mak...

Occupational therapists often use tabletop board games in treatment to help adult clients with physical disabilities improve the perceptual, cognitive, sensory, and fine motor skill components of occupational behavior. Detailed activity analyses of these types of activities, including performance norms, are not available in the occupational therapy literature. Such analyses would help therapist...

This study investigated the relationship of thyroxine (T4) and thyroid stimulating hormone (TSH) within normal ranges to cognitive performance in very old age. The participants (N = 200) were selected from a population-based study of nondemented persons aged 75 to 96 years (M = 83.9 years). Tasks assessing episodic memory, verbal fluency, visuospatial ability, short-term memory, and perceptual-...

In recent years there has been an increasing interest in capturing and understanding skilled performance by studying complex perceptual-motor skills. In this context, we identify and discuss key methodological issues that are particularly relevant when aiming to translate sport scientific knowledge into practical guidelines for coaches and athletes. These issues are: the representative performa...

Background: Visual perception is the ability to interpret and use what is seen. Interpretation is a mental process involving cognition, which gives meaning to the visual stimulus. Any dysfunction in different components of visual perception may lead to problems in activities of daily living, academics etc. It has been proven that visual perceptual and visual motor skills are different abilities...

Cortical map plasticity is believed to be a key substrate of perceptual and skill learning. In the current study, we quantified changes in perceptual ability after pairing tones with stimulation of the cholinergic nucleus basalis to induce auditory cortex map plasticity outside of a behavioral context. Our results provide evidence that cortical map plasticity can enhance perceptual learning. Ho...

Twenty-five male stroke patients were assessed with the use of a battery of perceptual tests (Gross Visual Skills [Baum, 1981]. Adult Visual-Perceptual Assessment [Baylor University Medical Center, Occupational Therapy Department, 1980], Manikin and Feature Profile subtests of the Arthur Point Scale of Performance Tests [Arthur, 1943; Buros, 1974, 1978], Judgment of Line Orientation [Benton, Va...

Adaptation of visually guided reaching movements in novel visuomotor environments (e.g. wearing prism goggles) comprises not only motor adaptation but also substantial sensory adaptation, corresponding to shifts in the perceived spatial location of visual and proprioceptive cues. Previous computational models of the sensory component of visuomotor adaptation have assumed that it is driven purel...

Representation of sequential structure can occur with respect to the order of perceptual events or the order in which actions are linked. Neural correlates of sequence retrieval associated with the order of motor responses were identified in a variant of the serial reaction time task in which training occurred with a spatially incompatible mapping between stimuli and finger responses. After tra...