The role of contextual materials in object recognition

While scene context is known to facilitate object recognition, little is known about which contextual “ingredients” are at the heart of this phenomenon. Here, we address the question of whether the materials that frequently occur in scenes (e.g., tiles in a bathroom) associated with specific objects (e.g., a perfume) are relevant for the processing of that object. To this end, we presented photographs of consistent and inconsistent objects (e.g., perfume vs. pinecone) superimposed on scenes (e.g., a bathroom) and close-ups of materials (e.g., tiles). In Experiment 1, consistent objects on scenes were named more accurately than inconsistent ones, while there was only a marginal consistency effect for objects on materials. Also, we did not find any consistency effect for scrambled materials that served as color control condition. In Experiment 2, we recorded event-related potentials and found N300/N400 responses—markers of semantic violations—for objects on inconsistent relative to consistent scenes. Critically, objects on materials triggered N300/N400 responses of similar magnitudes. Our findings show that contextual materials indeed affect object processing—even in the absence of spatial scene structure and object content—suggesting that material is one of the contextual “ingredients” driving scene context effects.

Belief-biased representations of textual information in bilinguals: Language as a source characteristic

When pursuing a controversial socio-scientific issue, readers are expected to construct balanced representations that include overlapping and opposing information. However, readers’ mental representations are often biased towards their prior beliefs. Previous research on such text-belief consistency effects have been conducted mostly in monolingual contexts. The present study investigated whether document language, as a source characteristic, moderates text-belief consistency effects at the situation-model and text-base representation levels. Eighty-seven bilingual readers—selected from a larger initial sample—read two documents on the global spread of English. The documents were either presented in participants’ first (Persian) and second (English) languages, or one was presented in Persian and the other one in English. A recognition task was used to assess situation-model strength and text-base strength. Overall, participants built stronger situation models for the belief-consistent information as opposed to belief-inconsistent information. However, document language moderated the text-belief consistency effect. When both texts were presented in English, the text-belief consistency effect was smaller than when both texts were presented in Persian. For the combination of English and Persian texts, the text-belief consistency effect was enlarged when the belief-consistent text was presented in English and the belief-inconsistent text in Persian but disappeared when the text-belief consistent text was presented in Persian and the belief-inconsistent text in English. These results suggest that document language can serve as a strong credibility cue that can eliminate belief effects, at least when the document language and the controversial issue are inherently related.

Comparing the Safety and Effectiveness of Dedicated Radiofrequency Transseptal Wires to Electrified Metal Guidewires

Application of electrocautery to a metal guidewire can be used to perform transseptal puncture (TSP). Dedicated radiofrequency guidewires (RF) may represent a better alternative. This study compares safety and effectiveness of electrified guidewires to a dedicated RF wire. TSP was performed on porcine hearts using an electrified 0.014” or 0.032” guidewire under various power settings compared to TSP using a dedicated RF wire with 5W power. The primary endpoint was the number of attempts required to achieve TSP. Secondary endpoints included the rate of TSP failure, TSP consistency, effect of the distance between tip of the guidewire and the tip of the dilator, and effect of RF power output level. Qualitative secondary endpoints included tissue puncture defect appearance, thermal damage to the TSP guidewire or dilator, and tissue temperature using thermal imaging. The RF wire required 1.10 ± 0.47 attempts to cross the septum. The 0.014” electrified guidewire required 2.17 ± 2.36 attempts (2.0x higher than the RF wire; p<0.01), and the 0.032” electrified guidewire required 3.90 ± 2.93 attempts (3.5x higher than the RF wire; p<0.01). Electrified guidewires had a higher rate of TSP failure, larger defects, more tissue charring, higher temperatures, and greater tissue heating. Fewer RF applications were required to achieve TSP using a dedicated RF wire compared to an electrified guidewire. Smaller defects and lower tissue temperatures were also observed using the RF wire. Electrified guidewires required greater energy delivery and were associated with equipment damage and tissue charring.

Processing Mechanisms Of Eye-Head Cues And Eye-Finger-Pointing Cues In The Dot-Perspective Task

<p><b>Calculating others’ visual perspective automatically is a pivotal ability in human’s social communications. In the dot-perspective task, the ability is shown as a consistency effect: adults respond more slowly to judge the number of discs that they can see when a computer-generated avatar sees fewer discs. The implicit mentalising account attributes the effect to relatively automatic tracking of others’ visual perspectives. However, the submentalising account attributes the effect to domain-general attentional orienting. Accordingly, three studies were conducted to elucidate the ongoing implicit mentalising vs. submentalising debate.</b></p> <p>Study 1 (comprising Experiments 1 and 2) replicated the consistency effect either when real-human-face or spatial layout of discs was considered. Study 2 (comprising of Experiments 3 and 4) dissociated two accounts by manipulating real human’s facial cues. In Experiment 3, using a new visual access manipulation (i.e., a black rectangle placed on an agent’s eyes for rendering an invisible condition), a consistency effect was induced for eyes-opened but not eyes-covered faces with head direction, suggesting implicit mentalising. Experiment 4 firstly compared implicit mentalising (via consistency effect in the dot-perspective task) with attentional orienting (via a cue-validity effect in Posner task) when manipulating eye-head cues (head-front-gaze-averted versus head-turned-gaze-maintained). Neither effect was modulated by eye-head-related directional cue, but the cue-validity effect’s elicitation seemed to be related to the directional cue’s dynamic property. Overall, implicit mentalising as revealed in consistency effect cannot be purely reduced to attentional-orienting-related submentalising processes.</p> <p>Study 3 (comprising of Experiments 5 to 7) further clarified the debate by considering the agent’s different body cues. Experiment 5 extended the findings of Experiment 4 by generating a new eye-head-cue comparison (head-front-gaze-averted vs. head-turned-gaze-averted). Directional cue modulated cue-validity effect but not consistency effect, favouring Study 2’s conclusion. Experiment 6 adopted a new body-cue-manipulation (gaze-averted vs. finger-pointing). Both cue-validity and consistency effects were elicited for finger-pointing but not gaze-averted agents, supporting submentalising. Experiment 7 combined finger-pointing with visual access’s manipulation (eyes-opened vs. eyes-covered) on the dot-perspective task. Visual access did not modulate the consistency effect when finger-pointing was simultaneously displayed, supporting submentalising. Altogether, gaze aversion cues appear to play a dominant role in moderating implicit mentalising on the dot-perspective task, but the process may be interfered by the easily-discriminable finger-pointing cues via an attentional orienting mechanism.</p>

PROCESSING MECHANISMS OF EYE-HEAD CUES AND EYE-FINGER-POINTING CUES IN THE DOT-PERSPECTIVE TASK

<p><b>Calculating others’ visual perspective automatically is a pivotal ability in human’s social communications. In the dot-perspective task, the ability is shown as a consistency effect: adults respond more slowly to judge the number of discs that they can see when a computer-generated avatar sees fewer discs. The implicit mentalising account attributes the effect to relatively automatic tracking of others’ visual perspectives. However, the submentalising account attributes the effect to domain-general attentional orienting. Accordingly, three studies were conducted to elucidate the ongoing implicit mentalising vs. submentalising debate.</b></p> <p>Study 1 (comprising Experiments 1 and 2) replicated the consistency effect either when real-human-face or spatial layout of discs was considered. Study 2 (comprising of Experiments 3 and 4) dissociated two accounts by manipulating real human’s facial cues. In Experiment 3, using a new visual access manipulation (i.e., a black rectangle placed on an agent’s eyes for rendering an invisible condition), a consistency effect was induced for eyes-opened but not eyes-covered faces with head direction, suggesting implicit mentalising. Experiment 4 firstly compared implicit mentalising (via consistency effect in the dot-perspective task) with attentional orienting (via a cue-validity effect in Posner task) when manipulating eye-head cues (head-front-gaze-averted versus head-turned-gaze-maintained). Neither effect was modulated by eye-head-related directional cue, but the cue-validity effect’s elicitation seemed to be related to the directional cue’s dynamic property. Overall, implicit mentalising as revealed in consistency effect cannot be purely reduced to attentional-orienting-related submentalising processes.</p> <p>Study 3 (comprising of Experiments 5 to 7) further clarified the debate by considering the agent’s different body cues. Experiment 5 extended the findings of Experiment 4 by generating a new eye-head-cue comparison (head-front-gaze-averted vs. head-turned-gaze-averted). Directional cue modulated cue-validity effect but not consistency effect, favouring Study 2’s conclusion. Experiment 6 adopted a new body-cue-manipulation (gaze-averted vs. finger-pointing). Both cue-validity and consistency effects were elicited for finger-pointing but not gaze-averted agents, supporting submentalising. Experiment 7 combined finger-pointing with visual access’s manipulation (eyes-opened vs. eyes-covered) on the dot-perspective task. Visual access did not modulate the consistency effect when finger-pointing was simultaneously displayed, supporting submentalising. Altogether, gaze aversion cues appear to play a dominant role in moderating implicit mentalising on the dot-perspective task, but the process may be interfered by the easily-discriminable finger-pointing cues via an attentional orienting mechanism.</p>

PROCESSING MECHANISMS OF EYE-HEAD CUES AND EYE-FINGER-POINTING CUES IN THE DOT-PERSPECTIVE TASK

<p><b>Calculating others’ visual perspective automatically is a pivotal ability in human’s social communications. In the dot-perspective task, the ability is shown as a consistency effect: adults respond more slowly to judge the number of discs that they can see when a computer-generated avatar sees fewer discs. The implicit mentalising account attributes the effect to relatively automatic tracking of others’ visual perspectives. However, the submentalising account attributes the effect to domain-general attentional orienting. Accordingly, three studies were conducted to elucidate the ongoing implicit mentalising vs. submentalising debate.</b></p> <p>Study 1 (comprising Experiments 1 and 2) replicated the consistency effect either when real-human-face or spatial layout of discs was considered. Study 2 (comprising of Experiments 3 and 4) dissociated two accounts by manipulating real human’s facial cues. In Experiment 3, using a new visual access manipulation (i.e., a black rectangle placed on an agent’s eyes for rendering an invisible condition), a consistency effect was induced for eyes-opened but not eyes-covered faces with head direction, suggesting implicit mentalising. Experiment 4 firstly compared implicit mentalising (via consistency effect in the dot-perspective task) with attentional orienting (via a cue-validity effect in Posner task) when manipulating eye-head cues (head-front-gaze-averted versus head-turned-gaze-maintained). Neither effect was modulated by eye-head-related directional cue, but the cue-validity effect’s elicitation seemed to be related to the directional cue’s dynamic property. Overall, implicit mentalising as revealed in consistency effect cannot be purely reduced to attentional-orienting-related submentalising processes.</p> <p>Study 3 (comprising of Experiments 5 to 7) further clarified the debate by considering the agent’s different body cues. Experiment 5 extended the findings of Experiment 4 by generating a new eye-head-cue comparison (head-front-gaze-averted vs. head-turned-gaze-averted). Directional cue modulated cue-validity effect but not consistency effect, favouring Study 2’s conclusion. Experiment 6 adopted a new body-cue-manipulation (gaze-averted vs. finger-pointing). Both cue-validity and consistency effects were elicited for finger-pointing but not gaze-averted agents, supporting submentalising. Experiment 7 combined finger-pointing with visual access’s manipulation (eyes-opened vs. eyes-covered) on the dot-perspective task. Visual access did not modulate the consistency effect when finger-pointing was simultaneously displayed, supporting submentalising. Altogether, gaze aversion cues appear to play a dominant role in moderating implicit mentalising on the dot-perspective task, but the process may be interfered by the easily-discriminable finger-pointing cues via an attentional orienting mechanism.</p>

The role of contextual materials in object recognition

While scene context is known to facilitate object recognition, little is known about whichcontextual “ingredients” are at the heart of this phenomenon. Here, we address the question ofwhether the materials that frequently occur in scenes (e.g., tiles in bathroom) associated withspecific objects (e.g., a perfume) are relevant for processing of that object. To this end, wepresented photographs of consistent and inconsistent objects (e.g., perfume vs. pinecone)superimposed on scenes (e.g., bathroom) and close-ups of materials (e.g., tiles). In Experiment1, consistent objects on scenes were named more accurately than inconsistent ones, while therewas only a marginal consistency effect for objects on materials. Also, we did not find anyconsistency effect for scrambled materials that served as color control condition. In Experiment2, we recorded event-related potentials (ERPs) and found N300/N400 responses – markers ofsemantic violations – for objects on inconsistent relative to consistent scenes. Critically, objectson materials triggered N300/N400 responses of similar magnitudes. Our findings show thatcontextual materials indeed affect object processing – even in the absence of spatial scenestructure and object content – suggesting that material is one of the contextual “ingredients”driving scene context effects.

The Orthographic Consistency Effect in French and Spanish: Phoneme-to-Grapheme Mappings Influence Auditory Word Recognition

PurposeIn languages with alphabetical writing systems, the relationship between phonology and orthography is strong. Phonology-to-orthography mappings can be consistent (i.e., one phonological unit corresponds to one orthographic unit) or inconsistent (i.e., one phonological unit corresponds to multiple orthographic units). This study investigates whether the Orthographic Consistency Effect (OCE) emerges at the phonemic level during auditory word recognition, regardless of the opacity of a language’s writing system.MethodsThirty L1-French (opaque language) and 30 L1-Spanish (transparent language) listeners participated in an L1 auditory lexical decision task which included stimuli with either only consistently-spelled phonemes or both consistently-spelled and a number of inconsistently-spelled phonemes. ResultsThe results revealed that listeners were faster at recognizing consistently-spelled words than inconsistently-spelled words. This implies that consistently-spelled words are recognized more easily than inconsistent ones. As for pseudoword processing, there is a numerical trend that might indicate a higher sensibility of French listeners to phoneme-to-grapheme inconsistencies. ConclusionsThese findings have theoretical implications: inconsistent phoneme-to-grapheme mappings, like inconsistencies at the level of the syllable or rhyme, impact auditory word recognition. Moreover, our results suggest that the OCE should occur in all languages with alphabetical writing systems, regardless of their level of orthographic opacity.