The effect of core stability exercise in reducing the risk of falling in the elderly at the work area of Kasian 1 public health center

Elderly is a condition that will be experienced by each people, where the age range is from 45 to 75 years. The process adds up age followed also by changes that occur in body systems either physiologically or pathologically in the presence of comorbidities. One of the processes that occurs is function cerebellum descends by starting with a balance disturbance and then the brain system, resulting in the risk of falling. Elderly experiencing falls can be affected by some things such as disorders of the brain system, self it self and the environment. A part from anatomical factors, there is also a lighting environment usually the elderly always wake up at night, if the environment is less lighting then the risk of falling is higher and if the condition of waking up, the concentration and muscle power cannot be optimal, resulting in decreased balance so that the risk of falling is higher. One way to maintain and minimize the risk can be done the core stability exercise. Benefits of core stability exercise is to strengthen the core as the support of the body so that the body can be stable. This type of research is experiment, using quasi experimental design with pre test and post test group design. The statistic test using Wilcoxon test. Sample of elderly at integrated healthcare center in Ngebel, totaled are 34 elderly. Elderly sample criteria age 60-74 years, do not use assistive devices and do not experience neurological disorders. Measure morse fall skale. The results of the homogeneity test show that the significance value (p) core stability exercise of 0.323, because of the significance of p 0.05 it can be concluded that the population is from the same variant or homogeneous. The calculation of the data normality test used the Shapiro-Wilk Test and is said to be normal if p 0, 05. Data normality test results 0.085. Hypothesis Test with willcoxon test because it has a normal and homogeneous data distribution in the group. From the test results obtained with a value of P = 0.034, meaning P 0, 05, so that there is an effect of core stability training on the risk of falling in the elderly.

Exploitation–Exploration Model of Media Multitasking

Media multitasking has been long considered as a distraction, as something that is inherently negative or irrational. Yet, casual observations and study findings indicate that in the current permanently online, permanently connected society, people still media multitask frequently, sometimes in spite of their knowledge of the costs. In this article, we introduce the exploitation–exploration model of media multitasking (EEMMM), which proposes that media multitasking occurs as a natural part of the waxing and waning of our task engagement: When primary task engagement (exploitation) begins to wane, alternative tasks become more attractive (exploration). In the first part of this paper, we delineate the limitations of the current perspective of media multitasking as a distraction. The second part provides an exposition for our model: What defines behavior exploitation and exploration, and why maintaining an optimal trade-off between the two is important; the everyday, media-related cues for exploiting and exploring; and the neurobiological evidence of a brain system that supports the transition from exploitation to exploration. Lastly, we show how our approach may explain why people media multitask spontaneously and in spite of their knowledge of the costs, and why not all media multitaskers are able to multitask optimally. We conclude the paper with an agenda for future media multitasking research based on the proposed framework.

A shared brain system forming confidence judgment across cognitive domains

Confidence is typically defined as a subjective judgment about whether a decision is right. Decisions are based on sources of information that come from various cognitive domains and are processed in different brain systems. An unsettled question is whether the brain computes confidence in a similar manner whatever the domain or in a manner that would be idiosyncratic to each domain. To address this issue, human participants of both sexes performed a new paradigm probing confidence in decisions made about the same material (history and geography statements), but based on different cognitive processes: semantic memory for deciding whether the statement was true or false, and duration perception for deciding whether the statement display was long or short. At the behavioral level, we found that the same factors (difficulty, accuracy, response time and confidence in the preceding decision) predicted confidence judgments in both tasks. At the neural level, we observed using fMRI that confidence judgments in both tasks were associated to activity in the same brain regions: positively in the ventromedial prefrontal cortex and negatively in a prefronto-parietal network. Together, these findings suggest the existence of a shared brain system that generates confidence judgments in a similar manner across cognitive domains.

SCIENCE WITHOUT “INTERMEDIARIES” (TO THE ANNIVERSARY OF RIMMA DMITRIEVNA GOLDINA)

The article was prepared for the anniversary of R. D. Goldina and touches upon the issues of the methodology of scientific search in archeology. The positive role of the researcher in the discussion about the chronology of early medieval antiquities, which was held in 1976 in Leningrad, is noted. Possible negative consequences of using alien sketches of archaeological material in scientific research are shown. Modern research (B. V. Rauschenbach) has shown that visual perception of space is a joint work of the eye + brain system, and not of the eye alone. When working with a certain kind of archaeological sources, the researcher's brain must be “trained” to recognize significant signs of this particular kind of sources. The stability of the chronological scheme of R. D. Goldina is predetermined by absolute knowledge of the material that was obtained as a result of her own author's excavations. Methodology for the analysis of archaeological material, developed by R. D. Goldina, is at the heart of many modern researches.

Apathy

‘Auto-activation’ deficit, the most severe form of apathy, is a model to approach apathy. Auto-activation deficit consists of a severe reduction in self-initiated actions contrasting with the sparing of externally driven ones under strong solicitations and the presence of automatic (stereotypic) behaviour. This severe apathy can be viewed as the consequence of a quantitative reduction of goal-directed behaviour. Auto-activation deficit is due to lesions in the prefrontal cortex (PFC)–basal ganglia circuitry, the brain system that generates and controls goal-directed behaviour. In this chapter it is proposed that several different mechanisms may be responsible for apathy. Damage to three PFC–basal ganglia circuits may explain most of the cases of apathy: (i) lesions in the orbital and ventromedial PFC–basal ganglia circuit lead to apathy through difficulties in evaluating the affective value of a given behavioural context (‘amotivation’); (ii) lesions in the lateral PFC–basal ganglia circuit contribute to apathy via an inability to generate or activate strategies required to successfully complete a given programme of actions (‘cognitive inertia’); (iii) lesions to the anterior cingulate cortex–basal ganglia circuit (located in an intermediary anatomical position between the ventral and lateral circuit) may lead to apathy via an inability to transfer the affective value of a given context (‘invigoration deficit’); (iv) the summation or the synergy of damage to these three circuits within the basal ganglia may lead to a frank decrease in the amplification of signals representing goal-directed behaviour that reach the PFC (‘empty mind’); and (v) if all three circuits are structurally intact, apathy may nevertheless occur via alterations of neurotransmission systems that modulate the activity of these circuits (i.e. dopamine, serotonin, and acetylcholine).