The Operational Process of Nostalgia: The Trigger Determines the Nostalgic Experience

2021 ◽  
Author(s):  
Oindrila Bhattacharya`
Keyword(s):  
Reaction Time ◽  
Experimental Design ◽  
Mixed Method ◽  
Affective State ◽  
Complex Nature ◽  
Autobiographical Memories ◽  
Event Type ◽  
Time Duration ◽  
Operational Process ◽  
Cognitive Component

Nostalgia is a complex affective state with a strong cognitive component focussed on past autobiographical memories. This complex nature of nostalgia is discussed in the literature but there are scarce empirical observations of state nostalgic processes. In this study, the operational process of nostalgia is explored by the use of two types of stimuli—indirect (instructions) and direct (music)—with a sample of 285 participants (18–35 years old) in a mixed-method experimental design. Nostalgia was observed in terms of its operational process (reaction time, duration, intensity and variation), the characteristics of the recalled event (event type and contents), and the nature of the nostalgic experience (its phenomenology, affect and motivation). The studied parameters of all three nostalgic components were found to vary with the stimulus that triggered it. The study shows that nostalgia is not a constant phenomenon but depends on the conditions that give rise to it.

Reaction Time and Brain Waves in Omitted Stimulus Tasks

2010 ◽  
Vol 24 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Oscar H. Hernández ◽  
Muriel Vogel-Sprott
Keyword(s):  
Reaction Time ◽  
Cognitive Processes ◽  
Young Male ◽  
Event Related Potential ◽  
Auditory Stimuli ◽  
Motor Action ◽  
Cognitive Component ◽  
Sensory Modalities ◽  
Two Measures ◽  
Somatosensory Stimuli

A missing stimulus task requires an immediate response to the omission of a regular recurrent stimulus. The task evokes a subclass of event-related potential known as omitted stimulus potential (OSP), which reflects some cognitive processes such as expectancy. The behavioral response to a missing stimulus is referred to as omitted stimulus reaction time (RT). This total RT measure is known to include cognitive and motor components. The cognitive component (premotor RT) is measured by the time from the missing stimulus until the onset of motor action. The motor RT component is measured by the time from the onset of muscle action until the completion of the response. Previous research showed that RT is faster to auditory than to visual stimuli, and that the premotor of RT to a missing auditory stimulus is correlated with the duration of an OSP. Although this observation suggests that similar cognitive processes might underlie these two measures, no research has tested this possibility. If similar cognitive processes are involved in the premotor RT and OSP duration, these two measures should be correlated in visual and somatosensory modalities, and the premotor RT to missing auditory stimuli should be fastest. This hypothesis was tested in 17 young male volunteers who performed a missing stimulus task, who were presented with trains of auditory, visual, and somatosensory stimuli and the OSP and RT measures were recorded. The results showed that premotor RT and OSP duration were consistently related, and that both measures were shorter with respect to auditory stimuli than to visual or somatosensory stimuli. This provides the first evidence that the premotor RT is related to an attribute of the OSP in all three sensory modalities.

scholarly journals PENGARUH WAKTU MASERASI TERHADAP AKTIVITAS ANTIOKSIDAN EKSTRAK DAUN PEGAGAN (Centella asiatica (L.) Urban)

2020 ◽  
Vol 9 (4) ◽  
pp. 482
Author(s):  
Ni Komang Trisna Rahayu ◽  
I Dewa Gede Mayun Permana ◽  
GA. Kadek Diah Puspawati
Keyword(s):  
Antioxidant Activity ◽  
Experimental Design ◽  
Leaf Extract ◽  
Centella Asiatica ◽  
Total Flavonoid ◽  
Time Duration ◽  
Time Treatment ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Effect On Yield

This research aimed to determine the effect of maceration time on the antioxidant activity of pegagan leaf extract and to determine the best maceration time with highest antioxidant activity of pegagan leaf extract. The experimental design used was Completely Randomized Design with maceration time duration there were 18, 24, 30, 36, 42, and 48 hours. All of the treatment repeated three times to obtained 18 units of experiments. The data analyzed by analyze of variance, if the treatment had a significant effect followed by The Duncan Test. The results showed that the maceration time treatment had a significant effect on yield, total phenolik, total flavonoid, total tannin and antioxidant activity of pegagan leaf extract. The 24 hour maceration time was the best treatment with antioxidant activity 66.67%, IC50 632.82 ppm, a yield of 24.30%, a total phenolik of 57.85 mgGAE / g, a total flavonoid of 105.28 mgQE / g. total tannin 54.09 mgTAE / g.

Optimization of Linoleic Acid Monoepoxidation Condition from Malaysian Jatropha curcas Using Central Composite Design (CCD)

2015 ◽  
Vol 754-755 ◽  
pp. 1107-1112
Author(s):  
Rozaini Abdullah ◽  
Jumat Salimon ◽  
Anis Atikah Ahmad
Keyword(s):  
Linoleic Acid ◽  
Reaction Time ◽  
Experimental Design ◽  
Central Composite Design ◽  
Reaction Temperature ◽  
Jatropha Curcas ◽  
Catalyst Loading ◽  
Time Saving ◽  
Independent Variable ◽  
Central Composite

The aim of this study was to optimize the monoepoxidation process of linoleic acid obtained from Malaysian Jatropha curcas oil using central composite design (CCD). There were four independent variable factors had been studied which involved reaction temperature (X1), reaction time (X2), catalyst loading (X3) and H2O2 concentration (X4). Thirty experiments were carried out based on the experimental design responses obtained. The results showed that the optimum condition was obtained at catalyst loading of 0.11% (w/w) methyltrioxorhernium (VII) (MTO), H2O2 mole of 99%, reaction temperature of 58.41oC for 5 hours. The central composite design was proven to be simpler method, time saving and required less samples compared to the conventional method.

scholarly journals The effect of an irrelevant directional cue on choice reaction time: Duration of the phenomenon and its relation to stages of processing

1976 ◽  
Vol 19 (1) ◽  
pp. 16-22 ◽  
Author(s):  
J. Richard Simon ◽  
Enrique Acosta ◽  
Steven P. Mewaldt ◽  
Cynthia R. Speidel
Keyword(s):  
Reaction Time ◽  
Choice Reaction Time ◽  
Time Duration

Study on the Synthesis of Micron-Sized Magnesium Hydroxide Flame Retardant by Using a Gaseous Ammonia Bubbling Method

2013 ◽  
Vol 821-822 ◽  
pp. 1341-1345
Author(s):  
Bing Liang ◽  
Chang Jian Gao ◽  
Jiao Lv
Keyword(s):  
Particle Size ◽  
Reaction Time ◽  
Experimental Design ◽  
Particle Size Distribution ◽  
Flame Retardant ◽  
Magnesium Hydroxide ◽  
Design Procedure ◽  
Gaseous Ammonia ◽  
Particle Size Analyzer ◽  
The Mean

Micron-sized Mg (OH)2 particles were synthesized by precipitation of MgSO4 with gaseous ammonia. An experimental design procedure was used to investigate the effects of the concentration of MgSO4, temperature of the reaction, time of the reaction, assembly time, speed of stirring, ultraphonic, the introduce of NaOH and surfactant on the mean particle size and the particle size distribution. Laser particle size analyzer, XRD, TG-DTG, SEM and other instrument was used to characterize the product and corresponding particle size.

scholarly journals Rhythmic Neural Patterns During Empathy to Vicarious Pain: Beyond the Affective-Cognitive Empathy Dichotomy

2021 ◽  
Vol 15 ◽  
Author(s):  
Niloufar Zebarjadi ◽  
Eliyahu Adler ◽  
Annika Kluge ◽  
Iiro P. Jääskeläinen ◽  
Mikko Sams ◽  
...  
Keyword(s):  
Subjective Experience ◽  
Time Window ◽  
Empirical Support ◽  
Neural Mechanism ◽  
Cognitive Empathy ◽  
Inhibitory Response ◽  
Complex Nature ◽  
Subjective Experiences ◽  
Affective Component ◽  
Cognitive Component

Empathy is often split into an affective facet for embodied simulation or sometimes sensorial processing, and a cognitive facet for mentalizing and perspective-taking. However, a recent neurophenomenological framework proposes a graded view on empathy (i.e., “Graded Empathy”) that extends this dichotomy and considers multiple levels while integrating complex neural patterns and representations of subjective experience. In the current magnetoencephalography study, we conducted a multidimensional investigation of neural oscillatory modulations and their cortical sources in 44 subjects while observing stimuli that convey vicarious pain (vs no-pain) in a broad time window and frequency range to explore rich neural representations of pain empathy. Furthermore, we collected participants’ subjective-experience of sensitivity to vicarious pain, as well as their self-reported trait levels of affective and cognitive empathy to examine the possible associations between neural mechanisms and subjective experiences and reports. While extending previous electrophysiological studies that mainly focused on alpha suppression, we found here four significant power modulation patterns corresponding to multiple facets of empathy: an early central (peaking in the paracentral sulcus) alpha (6–11 Hz) suppression pattern plausibly reflecting sensory processing, two early beta (15–23 Hz) suppression patterns in the mid-cingulate cortex (plausibly reflecting the affective component) and in the precuneus (plausibly reflecting the cognitive component), and a late anterior (peaking in the orbitofrontal cortex) alpha-beta (11–19 Hz) enhancement pattern (plausibly reflecting cognitive-control inhibitory response). Interestingly, the latter measure was negatively correlated with the subjective sensitivity to vicarious pain, thereby possibly revealing a novel inhibitory neural mechanism determining the subjective sensitivity to vicarious pain. Altogether, these multilevel findings cannot be accommodated by the dichotomous model of empathy (i.e., affective-cognitive), and provide empirical support to the Graded Empathy neurophenomenological framework. Furthermore, this work emphasizes the importance of examining multiple neural rhythms, their cortical generators, and reports of subjective-experience in the aim of elucidating the complex nature of empathy.

scholarly journals Penguasaan Konsep Siswa Pada Materi Termodinamika Dalam Pembelajaran Argument Driven Inquiry for STEM Education

2020 ◽  
Vol 5 (8) ◽  
pp. 1121
Author(s):  
Dionisius Bukifan ◽  
Lia Yuliati ◽  
Supriyono Koes Handayanto
Keyword(s):  
High School ◽  
Experimental Design ◽  
Stem Education ◽  
Conceptual Understanding ◽  
Effect Size ◽  
Mixed Method ◽  
Wilcoxon Test ◽  
Test Results ◽  
Significant Difference ◽  
Before And After

<p><strong>Abstract:</strong> This study aims to explore students’ conceptual understanding of thermodynamic in ADI for STEM education. The study uses embedded experimental design methods. It involved 29 students of XI grade high school in Kupang. Instruments tes consisted of 13 reasoning multiple chooise questions. Wilcoxon test results is P=.000 with an average posttest higher than pretest shows that there is significant difference between students' conceptual understanding of before and after learning. The effect size value is 2,39. Students’ conceptual understanding of each indicator is also discussed.</p><strong>Abstrak:</strong><em> </em>Tujuan penelitian adalah mengetahui penguasaan konsep siswa pada materi termodinamika dalam pembelajaran <em>Argument Driven Inquiry (ADI) for STEM education</em>. Penelitian menggunakan <em>mixed method</em> desain <em>embedded experimental</em>. Penelitian melibatkan 29 siswa kelas XI SMA di Kupang. Instrumen tes berupa 13 soal penguasaan konsep pilihan ganda. Hasil uji Wilcoxon sebesar <em>p</em>=.000 menunjukkan bahwa terdapat perbedaan yang signifikan antara penguasaan konsep siswa sebelum dan sesudah pembelajaran. Nilai <em>effect size</em> sebesar 2,39 menunjukkan bahwa pembelajaran <em>ADI for STEM education</em> berpengaruh kuat terhadap penguasaan konsep.

scholarly journals Non-Permanent English Teachers’ Resilience in Constructing Professional Identity in the Remote Areas of South Sulawesi

2020 ◽  
Vol 5 (4) ◽  
Author(s):  
Yunika Upa ◽  
Concilianus Laos Mbato
Keyword(s):  
Experimental Design ◽  
Professional Identity ◽  
Mixed Method ◽  
English Teachers ◽  
Remote Area ◽  
Personal Resources ◽  
English Teacher ◽  
Remote Areas ◽  
South Sulawesi ◽  
The Government

Being a non-permanent English teacher in a remote area is not easy. The non-permanent teachers have to face many challenges. Without having resilience, the teachers can not survive to teach in the area. This study investigated the factors that influenced the resilience of the non-permanent English teachers in building a professional identity in the remote areas of South Sulawesi. The mixed-method explanatory sequential experimental design was used by involving non-permanent English teachers at five schools in the remote area of Tana Toraja, South Sulawesi Province. The RSA Scale questionnaire and interview were used to find out what factors influenced teachers’ resilience. The results showed that the challenges faced by non-permanent English teachers made them resilient teachers. Personal resources and contextual resources seemed to play a major role in their growth of resilience. The high resilience of teachers shapes their professional identity, which makes them stay afloat and think that teaching is their calling. This study suggests implications for the education of policymakers and the government in Indonesia, and also for future researchers who are interested in a similar topic may conduct further studies with a broader context

scholarly journals Research Designs and Methodologies of Studies in Student Self-Assessment: A Content Analysis

2019 ◽  
Vol 9 (4) ◽  
pp. 1
Author(s):  
Maria Darra ◽  
Anastasia Papanthymou
Keyword(s):  
Experimental Design ◽  
Data Collection ◽  
Research Design ◽  
Mixed Method ◽  
Quantitative Method ◽  
Experimental Studies ◽  
Specific Design ◽  
Self Assessment ◽  
Research Designs ◽  
Quasi Experimental

The purpose of this paper is to analyze the content of 33 empirical studies related to student self-assessment in primary and secondary education and have been published over the last decade (2009-2019) in 19 scientific journals classified in Scimago (only articles in journals with peer review system to assure their quality) in order to investigate: a) the research design (experimental, quasi-experimental, non-experimental), b) the research method (mixed method, quantitative method, qualitative method), c) the specific design (pretest-posttest etc.), d) the data collection method (questionnaire, interviews, etc.). According to the main findings most studies use non-experimental design, followed by experimental and quasi-experimental design. With regard to research methods quantitative method is used in all research designs, while qualitative and mixed method are used to a lesser degree and only in experimental and non-experimental design. Regarding the specific design, most experimental and quasi- experimental studies adopt a "pretest-posttest" design, while non-experimental studies follow mainly descriptive design. Finally, concerning the data collection methods, questionnaire is the most common method for all research designs, as opposed to other methods, such as interview or the combination of questionnaire and interview.  Therefore, there is a need to investigate the issue of student self-assessment using experimental or quasi-experimental research design where the mixed methodological approach will be adopted and data collection will be carried out using various research tools such as the interview and the questionnaire in order to triangulate the results.

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