Search results for "mem"
showing 10 items of 7971 documents
视觉工作记忆中回溯线索效应的影响因素 [The Influencing Factors of Retro-Cue Effect in Visual Working Memory]
2022
The visual working memory is a temporary storage system, which encodes, maintains and retrieves visual information. The researchers have found that adding retro-cues to the maintenance phase of memory leads to changes in participants’ memory performance, which is the retro-cue effect. The magnitude of the retro-cue effect is not set in stone, but changes with the changes of its influencing factors. However, there is no study to summarize the influencing factors of the retro-clue effect. This paper looked into the articles related to the study of the retro-cue effect and summarized the influencing factors of the retro-cue effect: memory items, maintenance interval time, interference in maint…
Negative emotional state modulates visual working memory in the late consolidation phase
2020
Although a considerable literature has grown up around the interactions between emotional state and visual working memory (VWM) performance, the mechanism underlying the impact of the negative emotional state on VWM remains unclear. The present study aimed to test whether the influence of emotional state is related to the early phase or late phase of VWM consolidation process. Across three experiments, we found that the negative emotional state did not affect VWM performance when the presentation time of stimuli was short. However, when the presentation time was long, the negative emotional state increased the VWM precision and reduced the VWM number. According to the two-phase model propos…
不同情绪面孔的视觉工作记忆表现差异 [The Performance Difference of Visual Working Memory between Various Emotional Faces]
2022
Among social-emotional stimuli, emotional faces occupy an important position, which specifically refer to human faces with certain facial expressions. The visual working memory is a limited workspace where information can be saved online and can be accessed and operated by advanced cognitive function during the maintenance period. A large number of behavioral and electrophysiological studies have shown that there are differences in visual working memory performance of different emotional faces. Specifically, angry faces can enhance the visual working memory performance; fearful faces may cause some damage to visual working memory; sad faces will impair face recognition encoding in visual wo…
Electrophysiological evidence supports the role of sustained visuospatial attention in maintaining visual WM contents
2019
Recent empirical and theoretical work suggests that there is a close relationship between visual working memory (WM) and visuospatial attention. Here, we investigated whether visuospatial attention was involved in maintaining object representations in visual WM. To this end, the alpha lateralization and contralateral delay activity (CDA) were analyzed as neural markers for visuospatial attention and visual WM storage, respectively. In the single-task condition, participants performed a grating change-detection task. To probe the role of visuospatial attention in maintaining WM contents, two color squares were presented above and below the fixation point during the retention interval, which …
Vocabulary learning strategies : a study on Finnish first-year high school students’ independent vocabulary learning
2009
Oppimisstrategiat ovat olennainen osa vieraan kielen omaksumista, ja ne ovat jo pitkään olleet laajan tutkimuksen kohteena. Sanaston oppiminen nähdään yhä tärkeämpänä osana kielitaitoa ja koulujen opetusohjelmaa, minkä vuoksi sanaston oppimisstrategiat ovat kasvava tutkimuskohde kielitieteessä. Suuri osa uusien sanojen oppimisesta on kuitenkin oppilaiden omalla ajalla tapahtuvaa itsenäistä työskentelyä, ja tutkimus oppilaiden omista käsityksistä eri strategioiden käytöstä ja tehokkuudesta on ollut vähäisempää. Tämä kandidaatin tutkielma keskittyi selvittämään, millaisia strategioita lukion 1. vuoden opiskelijat käyttävät opiskellessaan sanastoa itsenäisesti, kuinka sitoutuneita he ovat…
Volatility risk premia and financial connectedness
2014
In this paper we use the Diebold Yilmaz (2009 and 2012) methodology to construct an index of connectedness among five European stock markets: France, Germany, UK, Switzerland and the Netherlands, by using volatility risk premia. The volatility risk premium, which is a proxy of risk aversion, is measured by the difference between the implied volatility and expected realized volatility of the stock market for next month. While Diebold and Yilmaz focus is on the forecast error variance decomposition of stock returns or range based volatilities employing a stationary VAR in levels, we account for the (locally) long memory stationary properties of the levels of volatility risk premia series. The…
视觉工作记忆中数量和精度的权衡关系是否受个体自发控制
2021
There is a negative correlation between the quality and quantity of memory representations in visual working memory, and this negative correlation is seen as a trade-off between quantity and quality. However, it is unclear whether this trade-off is entirely stimulus-driven or can be controlled voluntarily by individuals according to task demands, which has led to a debate on the mechanism of memory resource allocation. This paper systematically reviews the development of research on whether the trade-off between quantity and quality is subject to individual voluntary control, and point out this voluntary control is influenced by the exposure duration and working memory capacity, and some su…
Teacher-child interaction quality and children's self-regulation in toddler classrooms in Finland and Portugal
2021
This study examines the association between teacher–child interaction quality and children's self‐regulation in Finnish and Portuguese toddler classrooms. The participants included 230 Finnish (M = 29; SD = 3 months) and 283 Portuguese (M = 30, SD = 4 months) toddlers and their teachers (n = 43 Finland; n = 29 Portugal). The children's behavioural self‐regulation (attention, working memory, and inhibition control) was individually tested, and the teachers evaluated the children's self‐regulation skills in the classroom. The quality of the teacher–child interactions (i.e., emotional and behavioural support and engaged support for learning) was evaluated using the CLASS‐Toddler observation in…
Jelgavas pilsētas bibliotēka Akadēmijas ielā 26: ainavas kultūrvēsturiska lasīšana
2018
Maģistra darba temats ir “Jelgavas pilsētas bibliotēka Akadēmijas ielā 26: ainavas kultūrvēsturiska lasīšana”. Pētījuma galvenā problēma ir nepietiekami apzinātā Jelgavas pilsētas bibliotēkas ēkas vēsture. Pētījuma mērķis ir apkopot un analizēt pieejamo informāciju par bibliotēkas ēku, tās vēsturi un pārmaiņām laiku griežos, izvērtēt, kā šī informācija ir izmantojama bibliotēkas identitātes nostiprināšanā. Teorētisko bāzi veido aksioloģija un Informācijas pasauļu teorija. Datu ieguvei un analīzei izmantota Ainavas kultūrvēsturiskas lasīšanas metode. Pētījuma rezultāti apliecina, ka Jelgavas pilsētas bibliotēkas ēka un tās vēsture ir nozīmīgs un plašs naratīvs, kas, mērķtiecīgi izmantots, va…
REVERSE ELECTRODIALYSIS FOR POWER PRODUCTION FROM OILFIELD WASTEWATERS
2022
Produced waters (PWs) are wastewaters generated by crude-oil extraction processes. They can present very different characteristics depending on the field location and production process. Dispersed oil, dissolved organics and solid particles are usually the main components. Moreover, PWs can contain a very high quantity of dissolved salts 1, with a total dissolved solid (TDS) concentration up to 300 g/L. Each barrel of extracted oil requires the simultaneous extraction of 3 barrels of produced water2 on average. PWs are often discharged into the sea, or sent in evaporation ponds thus leading to a dramatic environment impact3. Reinjection in the extraction well is currently the most common an…