scholarly journals Choline intake effects on psychophysiological indicators of students in the pre-exam period

2021 ◽  
Vol 9 (2) ◽  
pp. 397-405
Author(s):  
Olga Tarasova ◽  
Vadim Ivanov ◽  
Sergey Luzgarev ◽  
Marya Lavryashina ◽  
Vladimir Anan’ev

Introduction. Choline has a wide range of physiological functions. It has a neuroprotective effect on brain dysfunctions, while its deficiency has a negative effect on antenatal development of the nervous system. We aimed to study the impact of exogenous choline on the psychophysiological indicators in students. Study objects and methods. 87 students were surveyed by questionnaire to determine their background intake of dietary choline. One month before the exams, we measured their simple and complex visual-motor reaction times, functional mobility and balance of nervous processes, as well as indicators of their short-term memory, attention, health, activity, and mood. Then, we divided the students into a control and an experimental group, regardless of their choline intake. The experimental group took 700 mg choline supplements on a daily basis for one month, followed by a second psychophysiological examination. Results and discussion. Students with a low choline intake had lower functional mobility and balance of nervous processes, but better attention stability than students with a high choline intake. The second examination showed improved short-term memory, health, and activity indicators in the experimental group, compared to the control. The visual-motor reaction times also increased, but only in students with an initially low level of choline intake. Conclusion. Choline supplementation can be recommended to students under pre-exam stress to enhance the functional state of their central nervous system.

2017 ◽  
Vol 13 (4) ◽  
pp. 56-63 ◽  
Author(s):  
E.A. Savina ◽  
I.A. Savenkova ◽  
I.V. Shchekotikhina ◽  
A.M. Gul'yants

This article discusses the results of experimental study aimed at investigating the effect of games with rules on voluntary regulation of preschool children. The following components of voluntary regulation were studied: short-term and working memory, verbal interference control, the ability to follow verbal instruction, and knowledge of rules of conduct. One hundred and twenty 6—7-year-old children participated in this study. After the intervention, children in experimental group improved their knowledge of rules of conduct, short-term memory for numbers, verbal interference, and the ability to follow verbal instruction when executing a visual-motor integration task. Children in the control group also improved their verbal interference ability and short-term memory for numbers and words. However, size effects were smaller than in the experimental group.


2021 ◽  
Vol 26 (4) ◽  
pp. 98-103
Author(s):  
S.I.  Kalashchenko

The study is devoted to assessing the psychophysiological adaptive capabilities of students of higher medical institutions. There was conducted a screening study on the basis of which a correlation analysis of a group of 42 students was performed. The main inclusion criterion was good physical activity. Exclusion criteria - the presence of chronic diseases, acute respiratory viral infections at the time of examination, taking antidepressants or psychoactive substances. The study was aimed to identify the peculiarities of changes in psychophysiological functions and the state of adaptive capacity of students of higher medical institutions being in stressful conditions. The following methods from the software and hardware complex "Psycholot-1" were used for the study: "Functional mobility of nervous processes according to Khilchenko" and "Memory." The survey was conducted under micro-stress, it means all tasks had to be completed in a limited period. Statistical analysis of the data was performed to establish correlations between psychophysiological indicators of short-term memory and functional mobility of nervous processes  (Spearman's rank correlation index). It was found that the faster the stimulus appears in conditions of time deficit, the lower the mobility of nervous processes in the student, which is directly reflected in the indicators in increasing the minimum exposure time of the figure on the screen (0.27±0.007 s). In addition, a relationship was found between the rate of reaction of the left hand to a stimulus and the amount of information that a person can store in short-term memory. The information obtained will help to determine the initial data of the adaptive capacity of a potentially healthy contingent of people and predict their success in further professional activities in the sphere of medicine.


1989 ◽  
Vol 154 (6) ◽  
pp. 797-800 ◽  
Author(s):  
Barbara Sahakian ◽  
Gemma Jones ◽  
Raymond Levy ◽  
Jeffrey Gray ◽  
David Warburton

Nicotine in patients with dementia of the Alzheimer type (DAT) producted a significant and marked improvement in discriminative sensitivity and reaction times on a computerised test of attention and information processing. Nicotine also improved the ability of DAT patients to detect a flickering light in a critical flicker fusion test. These results suggest that nicotine may be acting on cortical mechanisms involved in visual perception and attention, and support the hypothesis that acetylcholine transmission modulates vigilance and discrimination. Nicotine may therefore be of some value in treating deficits in attention and information processing in DAT patients.


Perception ◽  
1997 ◽  
Vol 26 (1_suppl) ◽  
pp. 115-115
Author(s):  
I V Chueva ◽  
K N Dudkin

Visual short-term memory was tested in a delayed-discrimination task on rhesus monkeys before and after a systemic injection of the antioxidant oxymetacil (4 – 7 mg kg−1). Monkeys had to discriminate stimuli with different visual attributes (colour, orientation, spatial frequency, size, contrast, spatial relationships between visual objects) by a delayed (0 – 32 s) instrumental reflex. Oxymetacil had no influence upon visual discrimination without delay, but after injection of this drug the delayed discrimination (associated with mechanisms of short-term memory) of different stimuli was significantly improved. Oxymetacil increased the duration of short-term storage of spatial information by a factor of 2 – 4 and decreased motor reaction time. Application of oxymetacil in the same doses produced similar results for delayed discrimination of black-and-white gratings, or geometrical figures of different orientations and size. The duration of short-term information storage was doubled or trebled and the motor reaction time was decreased. If monkeys were required to discriminate colour figures, the duration of short-term information storage was also doubled, being longer than for any of the other tasks. The results are discussed in terms of effects on cortical interregional synchronisation mechanisms responsible for control processes such as attention.


1998 ◽  
Vol 8 (3) ◽  
pp. 352-357 ◽  
Author(s):  
Alex Gomelsky ◽  
E. Wayne Holden ◽  
Kathy A. Ellerbeck ◽  
Joel I. Brenner

AbstractCognitive, functional, educational achievement and behavioural measures were employed to assess neurobehavioral status in 57 of 60 participants who were initially enrolled in the Baltimore–Washington Infant Study, and who survived surgical correction of complete transposition (concordant atrioventricular and discordant ventriculo-arterial connections). Charts were reviewed to investigate the relationship between birth variables, surgical strategy and developmental outcomes. Higher preoperative weight was associated with better outcomes on the Stanford–Biner Short-term Memory subtest, while lower preoperative oxygen tension was associated with better outcomes on the Abstract/Visual Reasoning subtest and a test of Visual–Motor Integration. Longer total bypass time was associated with poor outcomes on the Short-term Memory subtests. Higher average flow rates during cooling and rewarming were associated with higher scores in the test of short term memory but poorer outcomes on a test for visual motor integration. Longer cooling times were associated with higher scores on the test for Visual–Motor Integration. Patients suffering seizures scored lower on the Stanford–Biner Composite, as well as in their tests of achievement. The data indicate that non-verbal. skills may be particularly sensitive to variations in surgical strategies employed to correct complete transposition. Overt neurological events, such as seizures, were related to global deficits in intellectual functioning. Prospective studies evaluating systemic variations in surgical procedures and attempts to prevent and manage perioperative neurological events are important for further investigation of neurodevelopmental outcomes in children surviving surgical correction.


2020 ◽  
Vol 13 (1) ◽  
pp. 35-50
Author(s):  
B.B. Velichkovsky ◽  
F.R. Sultanova ◽  
D.V. Tatarinov ◽  
A.A. Kachina

The study investigates the problem of information displacement from short-term memory. In two experiments, reaction times for recent negative probes were analyzed in the Sternberg’s memory scanning task. The diffusion model of reaction times was used with parameters estimated with the fast-dm software. It was found (experiment 1) that recent negative probes are characterized by a reduction in the speed of information accumulation (drift rate). This suggests residual activation of irrelevant cognitive representation in memory after they have been displaced from short-term memory. It was also found (experiment 2) that negative probes semantically related to items in a preceding target set (semantic recent negative probes) are characterized by a similar decrease in the drift rate. This suggests activation spreading from irrelevant cognitive representations displaced from short-term memory along semantic connections and identifies activated long-term memory as the target of information displacement from short-term memory. Additional mechanisms of short-term memory scanning (negative priming and dynamic decision thresholds) are discussed.


Author(s):  
Josje Verhagen ◽  
Elise de Bree

Abstract Earlier work indicates that bilingualism may positively affect statistical learning, but leaves open whether a bilingual benefit is (1) found during learning rather than in a post-hoc test following a learning phase and (2) explained by enhanced verbal short-term memory skill in the bilinguals. Forty-one bilingual and 56 monolingual preschoolers completed a serial reaction time task and a nonword repetition task (NWR). Linear mixed-effect regressions indicated that the bilinguals showed a stronger decrease in reaction times over the regular blocks of the task than the monolinguals. No group differences in accuracy-based measures were found. NWR performance, which did not differ between the groups, did not account for the attested effect of bilingualism. These results provide partial support for effects of bilingualism on statistical learning, which appear during learning and are not due to enhanced verbal short-term memory. Taken together, these findings add to a growing body of research on effects of bilingualism on statistical learning, and constitute a first step towards investigating the factors which may underlie such effects.


2018 ◽  
Vol 2 (2) ◽  
pp. 166
Author(s):  
Sinarsi Meliala ◽  
Dwi Nursiti ◽  
Ika Corry Hartati Sipayung

ABSTRAKPenelitian ini berjudul Penerapan Strategi Mengingat Mnemonic untuk Meningkatkan Kemampuan Mengingat Mahasiswa Psikologi Universitas Sari Mutiara Indonesia. Penelitian ini akan dilakukan dengan desain eksperimen kelompok eksperimen prestest-postest untuk mengetahui peranan metode chunking untuk peningkatan memori jangka pendek. Untuk mencapai tujuan yang diinginkan maka penelitian ini akan dilaksanakan dengan tiga tahapan. Masing-masing tahapan akan terdiri dari pertemuan pelatihan yang diberikan agar subyek penelitian benar-benar memahami metode chunking sebagai salah satu strategi untuk mengingat. Setiap akhir tahap akan diadakan evaluasi untuk mengetahui kemajuan dan semual permasalahan yang timbul.             Subyek penelitian adalah mahasiswa yang terdaftar di Program Studi Psikologi Universitas Sari Mutiara Indonesia yang berjumlah 60 orang. Adapu tujuan dari penelitian ini adalah untuk meningkatkan kemampuan memori mahasiswa Fakultas Psikologi Universitas Sari Mutiara dan menunjang kemampuan mahasiswa Fakultas Psikologi Universitas Sari Mutiara dalam menguasai berbagai konsep psikologi selama proses pembelajaran berlangsung. Hasil penelitian berdasarkan uji t tes diperoleh nilai p value 0.000 yang artinya ada hubungan Penerapan Strategi Mengingat Mnemonic untuk Meningkatkan Kemampuan Mengingat Mahasiswa Psikologi Universitas Sari Mutiara Indonesia dengan metode chunking. Kata kunci : Mnemonic, Memori jangka pendek, eksperimen, psikologi kognitif.  ABSTRACTThis research is entitled Implementation Of Mnemonic Memorizing Strategy to Improve Memorizing Ability of USM-Indonesia Psychological Students. This research will be conducted with the experimental design of the prestest-posttest experimental group to determine the role of the chunking method for improving short-term memory. To achieve the desired goals, this research will be carried out in three stages. Each stage will consist of training meetings provided so that research subjects truly understand the chunking method as a strategy to remember. At the end of each stage an evaluation will be held to find out the progress and all the problems that arise. The research subjects were 60 students enrolled in the Sari Mutiara Indonesia University Psychology Study Program. Adapu, the purpose of this study was to improve the memory skills of the students of the Faculty of Psychology at Sari Mutiara University and to support the ability of the Psychology University Faculty of Psychology students to master various psychological concepts during the learning process. The results of the research based on the test t test obtained the value of p value 0.000 which means that there is a relationship between Implementation Of Mnemonic Memorizing Strategy to Improve Memorizing Ability of USM-Indonesia Psychological Students by the chunking method. Keywords: Mnemonic, short-term memory, experiment, cognitive psychology


2021 ◽  
pp. 50-62
Author(s):  
V. O. Belash ◽  
D. V. Bayer ◽  
V. V. Kostousov

Introduction. Attention deficit hyperactivity disorder (ADHD) is a neurobehavioral disorder that occurs in 5-8 % of school-age children and persists into adulthood in 60 % of cases. At the present stage of neurology development, a number of significant drawbacks have been noted in the pharmacological correction of ADHD: the need for a long course of medication, the problem of polypragmasia, side effects and allergic reactions. Thus, there is a real need to develop non-drug ways to correct ADHD. Previous studies have demonstrated a sufficiently high clinical efficacy of transcranial micropolarization of the brain in the treatment of this patients group. Some studies have shown the effectiveness of the osteopathic correction use, which can increase the effectiveness of selective and sustained attention in children with ADHD. At the same time, the question of the possibility of combining various non-drug methods of treatment is quite acute.The aim of the study is to research the feasibility of osteopathic correction using in combination with transcranial micropolarization of the brain in the complex treatment of children with ADHD.Materials and methods. A controlled randomized trial was conducted in the period from January 2018 to February 2020 in Ekaterinburg and St. Petersburg. 68 patients with the established diagnosis attention deficit hyperactivity disorder aged 6 to 10 years, including 42 boys and 26 girls, were under observation. All patients, depending on the used treatment method, were divided by simple randomization into two comparable groups: the main group — 34 people, 22 boys and 12 girls, average age 7,4±1,2 years; the control group consisted of 34 people, 20 boys and 14 girls, with an average age 7,8±1,1 years. Patients received drug therapy with hopanthenic acid in age-related dosages (30 mg/kg body weight), course duration of 2 months, and transcerebral micropolarization of the brain. Each patient received one course of micropolarization, consisting of 15 sessions, the duration of each session was 30 minutes. Patients of the main group received osteopathic correction in addition to the therapy described above. In total, 4 sessions of 60 minutes each were held. The interval between the first sessions was 10 days, between subsequent sessions — from 10 to 14 days. There were evaluated the osteopathic status, the severity of ADHD manifestations and the short-term memory indicators, and the type and properties of the nervous system were determined for all patients, regardless of the group, before the start of treatment, as well as after the completion of the course of complex therapy.Results. After the therapy, there was a statistically significant decrease (p<0,05) in scores quantity on the ADHD assessment scale (ICD-10 criteria) both in the main and in the control groups, which reflects a decrease in the severity of clinical manifestations of this syndrome and demonstrates the effectiveness of the used therapy methods. In patients of the main group who received osteopathic correction, compared with the control group, there was also a significant (p<0,05) decrease in the number of regional dominant somatic dysfunctions, an increase in short-term memory indicators and a change in the type and properties of the nervous system (from weak to stable).Conclusion. The therapy carried out both with the use of osteopathic correction and without it, equally leads to a decrease in the degree of manifestations of ADHD. This indicates the clinical effectiveness of both studied integrated approaches to the treatment of children with ADHD. At the same time, osteopathic correction in the treatment of patients with ADHD significantly increases the indicators characterizing short-term memory and changes the type of response of the nervous system. These changes can be regarded as a potential opportunity to increase the learning ability of children and improve their socialization.


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