65 research outputs found
Effects of global and local contexts on chord processing: An ERP study
No full text
In real life, the processing of an incoming event is continuously influenced by prior information at multiple timescales. The present study investigated how harmonic contexts at both local and global levels influence the processing of an incoming chord in an event-related potentials experiment. Chord sequences containing two phrases were presented to musically trained listeners, with the last critical chord either harmonically related or less related to its preceding context at local and/or global levels. ERPs data showed an ERAN-like effect for local context in early time window and a N5-like component for later interaction between the local context and global context. These results suggest that both the local and global contexts influence the processing of an incoming music event, and the local effect happens earlier than the global. Moreover, the interaction between the local context and global context in N5 may suggest that music syntactic integration at local level takes place prior to the integration at global level.</p
Achieving full diversity in multi-antenna two-way relay networks via symbol-based physical-layer network coding
No full textThis paper considers physical-layer network coding (PNC) with M-ary phase-shift keying (MPSK) modulation in two-way relay channel (TWRC). A low complexity detection technique, termed symbol-based PNC (SPNC), is proposed for the relay. In particular, attributing to the outer product operation imposed on the superposed MPSK signals at the relay, SPNC obtains the network-coded symbol (NCS) straightforwardly without having to detect individual symbols separately. Unlike the optimal multi-user detector (MUD) which searches over the combinations of all users’ modulation constellations, SPNC searches over only one modulation constellation, thus simplifies the NCS detection. Despite the reduced complexity, SPNC achieves full diversity in multi-antenna relay as the optimal MUD does. Specifically, antenna selection based SPNC (AS-SPNC) scheme and signal combining based SPNC (SC-SPNC) scheme are proposed. Our analysis of these two schemes not only confirms their full diversity performance, but also implies when SPNC is applied in multi-antenna relay, TWRC can be viewed as an effective single-input multiple-output (SIMO) system, in which AS-PNC and SC-PNC are equivalent to the general AS scheme and the maximal-ratio combining (MRC) scheme. Moreover, an asymptotic analysis of symbol error rate (SER) is provided for SC-PNC considering the case that the number of relay antennas is sufficiently large
Task modulation of disyllabic spoken word recognition in Mandarin Chinese: a unimodal ERP study
No full textUsing unimodal auditory tasks of word-matching and meaning-matching, this study investigated how the phonological and semantic processes in Chinese disyllabic spoken word recognition are modulated by top-down mechanism induced by experimental tasks. Both semantic similarity and word-initial phonological similarity between the primes and targets were manipulated. Results showed that at early stage of recognition (similar to 150-250 ms), an enhanced P2 was elicited by the word-initial phonological mismatch in both tasks. In similar to 300-500 ms, a fronto-central negative component was elicited by word-initial phonological similarities in the word-matching task, while a parietal negativity was elicited by semantically unrelated primes in the meaning-matching task, indicating that both the semantic and phonological processes can be involved in this time window, depending on the task requirements. In the late stage (similar to 500-700 ms), a centro-parietal Late N400 was elicited in both tasks, but with a larger effect in the meaning-matching task than in the word-matching task. This finding suggests that the semantic representation of the spoken words can be activated automatically in the late stage of recognition, even when semantic processing is not required. However, the magnitude of the semantic activation is modulated by task requirements
Long-term sport experience influences general action-related lexical semantic processing: ERP evidence
No full textThis study aimed to investigate whether long-term domain-specific sport experience influences general action-related lexical semantic processing. Wushu (martial arts) athletes and non-athletes were asked to complete a lexical decision task in which nouns served as targets primed by general action-related or action-unrelated verbs. Event-related potential (ERP) results showed that target nouns primed by action-related verbs elicited reduced N400s compared to those primed by action- unrelated verbs for both groups. Moreover, target nouns primed by action-related verbs elicited larger late positive components (LPCs) than those primed by action-unrelated verbs only for wushu athletes and not for non-athletes. These results suggest that long-term domain-specific sport experience facilitates general action-related lexical semantic processing and support an association between the sensory-motor system and language comprehension. </p
Long-term sport experience and lexical semantic processsing
No full textWushu athletes (301-320) and non-athletes (1-19)<br
materials
No full textmaterials for the manuscript entitled
"Prediction differs at sentence and discourse level: An event-related
potential study
Music training and temporal order processing
No full textMusic training and temporal order processing</p
ERP data
No full textERP data for the manuscript entitled "Prediction differs at sentence and discourse level: An event-related potential study
Semantic activation in badminton action processing and its modulation by action duration: An ERP study
No full textERP evoked by the target words primed by long-congruent, long-incongruent, short-congruent, and short-incongruent videos. </p
Functionalisation of Liquid Metal Droplets by Surface and Interface Engineering and Electrification
No full textLiquid metals, particularly gallium-based alloys, have attracted increasing attention as a class of functional materials due to their excellent electrical conductivity, fluidity, and tunable surface chemistry. This thesis explores strategies to engineer tunable interfaces in liquid metals through alloy composition modulation and particle functionalisation, ultimately enabling the development of reconfigurable electroluminescent display systems.
In Chapters 1 and 2, the background and fundamental principles of gallium-based liquid metals, surface modulation, and electric discharge-induced electroluminescence are introduced through a critical review of relevant literature.
In Chapter 3, the author investigates the influence of minor alloying elements (Sn, Bi, Zn) on the electrocapillarity and electrochemical surface behaviour of gallium (Ga). By systematically analysing how trace elements affect surface tension, wetting dynamics, and oxidation-induced structures, this study reveals the underlying mechanisms that govern surface reactivity and electric field responses in Ga-based liquid metals.
In Chapter 4, the author demonstrates a particle-functionalized liquid metal platform by embedding electroluminescent phosphor particles (e.g., ZnS:Cu) into the oxide shell of EGaIn droplets, forming liquid metal marbles. These marbles enable dynamic visualisation of electric discharge paths under applied voltage, offering a novel approach to spatially map and manipulate discharge trajectories.
In Chapter 5, building upon the discharge-path visualisation strategy established in Chapter 4, the author further develops a reconfigurable multi-colour display platform using phosphor-coated liquid metal marbles. This chapter extends the concept from single-colour discharge visualisation to full-spectrum, programmable colour display. By incorporating red, green, and blue phosphors in controlled ratios, additive colour mixing is achieved without the need for physically separated subpixels.
In Chapter 6, the thesis concludes by summarizing the major findings and outlining future research directions. The results collectively establish a unified interface engineering framework for gallium-based liquid metals, with potential applications ranging from fundamental electrochemical modulation to advanced soft optoelectronic systems
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