Objective/BackgroundTactile perception is a basic way to obtain and evaluate information about an
object. The purpose of this study was to examine the effects of tactile
perception on brain activation using two different tactile explorations,
passive and active touches, in individuals with chronic hemiparetic
stroke.MethodsTwenty patients who were diagnosed with stroke (8 right brain damaged, 12
left brain damaged) participated in this study. The tactile perception was
conducted using passive and active explorations in a sitting position. To
determine the neurological changes in the brain, this study measured the
brain waves of the participants using electroencephalography (EEG).ResultsThe relative power of the sensory motor rhythm on the right prefrontal lobe
and right parietal lobe was significantly greater during the active tactile
exploration compared to the relative power during the passive exploration in
the left damaged hemisphere. Most of the measured brain areas showed
nonsignificantly higher relative power of the sensory motor rhythm during
the active tactile exploration, regardless of which hemisphere was
damaged.ConclusionThe results of this study provided a neurophysiological evidence on tactile
perception in individuals with chronic stroke. Occupational therapists
should consider an active tactile exploration as a useful modality on
occupational performance in rehabilitation training.
Objective: Balance is a preceding task for functional activities in daily activities as well as community-dwelling activities. To learn skilled and functional activities, it is also necessary to imagine an appropriate and effective movement representation used to plan and execute the functional activities. The purpose of this study was to evaluate the effects of balance imagery of semi-tandem stance on a flat floor and balance beam on balance abilities for elderly and young adults. Design: Cross-sectional study. Methods: Fifteen elderly and thirty-four young adults were enrolled in this study. In order to determine whether there is a change in postural control ability according to the different imagery training methods used, standing static balance measurements were performed. According to the therapist's instructions, participants were to stand in a semi-tandem position on the Good Balance System for 1 minute while imagining that they were standing on a balance beam, and while the postural control abilities was assessed. Results: Postural control was significantly different in balance ability of semi-tandem stance on a flat floor compared to on a balance beam in both geriatrics and young adults. Postural sway was more significantly decreased in young adults than older adults during balance imagery of semi-tandem stance on a flat floor as well as on balance beam (p<0.05).
Conclusions:The results of this study suggest that the ability to mentally represent their actions was similar in older adults compared to young adults, although older adults showed a drop in efficiency of postural control more than young adults.
[Purpose] The aim of the present study was to examine the effects of brain activation
using sensory awareness, imagery, and observation in adults with psychological stress.
[Participants and Methods] The participants of the study were 30 adults with psychological
stress. They responded to questionnaires, including a stress response inventory. Data for
brain activation were collected for sensory awareness, imagery, and observation using
electroencephalography. To determine the neurological changes in the brain, this study
analysed the relative power of sensory motor rhythm of the participants using
electroencephalography. [Results] Results showed that the relative power of the sensory
motor rhythm was significantly greater during awareness and imagery of sensory than during
observation. [Conclusion] The results of this study suggest that awareness, imagery, and
observation of sensation should be considered as useful modalities in people with
psychological stress.
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