An inexpensive pure-tone pattern generator

A low-cost sound pattern generator that is remotely programmable has been developed to produce pure-tone auditory patterns. The device, which is compatible with relay programming equipment, can generate either of two auditory patterns in the sequence ABA or BAB. The generator features an independently settable range of ON and OFF durations (0.1 to 1.0 sec) for pure-tone bursts and a selectable range (0.2 to 2.0 sec) of intercycle intervals. The inexpensive construction cost coupled with the flexibility of the timing characteristics of the generator should make it of interest to a wide variety of auditory researchers.     

Reliable operant apparatus for fish: Audio stimulus generator, response button, and pellet-dispensing nipple

As part of ongoing research into the ability of koi to categorize complex auditory stimuli, we have had to develop novel apparatus. The stimulus generator presents sound from two CD drives under computer control through a new underwater speaker. The operant manipulandum is a horizontal button that eliminates spurious triggering by water turbulence and problematic response topographies. The button’s design has also been adapted for use by tilapia in an aquacultural food-preference study. The feeder uses a nipple to dispense food pellets reliably under water. In this paper, the apparatus is described in detail. Also discussed are methodological issues related to its design, as well as its usage in a pilot study in which koi learned to discriminate music from silence by using a single manipulandum with food reinforcement.     

Discrimination of restrictions in sequentially blocked auditory displays: Shifting block designs

Finite-state Markov sequences were generated by a digital computer, translated to electrical pulse trains, and converted to sound by earphones. The sequences were constrained in terms of the maximum number of occurrences of any state within any block of successive items. The discriminability among such sequences was measured in terms of the threshold interstate interval difference that is required to achieve a given level of discrimination among the sequences. These thresholds are closely related to the number of selections available to the source generator for each position of the sequence.     

无关声音效应研究述评

无关声音效应是在对注意与记忆进行研究时所发现的一个现象,有益于探讨噪音等无关声音刺激对个体认知过程、工作绩效及身心健康的影响作用。在简要回顾ISE现象的界定与理论解释争论的基础上,重点从对刺激强度不同的ISE现象之理论分析、应用价值及一些相关的近期研究方面作了介绍,从对ISE现象的理论解释、无关声音刺激的选取、研究方法的综合使用、ISE现象中的个体差异等方面做了展望。     

Auditory location in the irrelevant sound effect: The effects of presenting auditory stimuli to either the left ear, right ear or both ears

Two experiments used both irrelevant speech and tones in order to assess the effect of manipulating the spatial location of irrelevant sound. Previous research in this area had produced inconclusive results (e.g., Colle, 1980). The current study demonstrated a novel finding, that sound presented to the left ear produces the greatest level of disruption. These results were explained in terms of hemispheric specialisation for processing of some supra-linguistic components in the unattended sound. Results also supported previous research by demonstrating that both forms of irrelevant sound disrupted performance on serial memory tasks (Bridges & Jones, 1996; Colle & Welsh, 1976; Jones, Alford, Bridges, Tremblay, & Macken, 1999; Jones, Miles, & Page, 1990).     

Social categorization,visual cues,and social judgements

Recent research on social cognition suggests that lifelike visual and vocal information about a person may strongly mediate the impact of prior social categorical knowledge on social judgements. Other research, however, on the contribution of visual cues to impression formation, suggests that they have relatively little impact. This study sought to resolve these conflicting findings by examining the effect of visual cues on social judgements when subjects possess prior social categorical knowledge varying in salience to the experimental task. Videotaped target interviews were monitored by observers in either sound and vision or sound only, and measures were taken of the targets' perceived personality, their ‘actual’ and ‘predicted’ social performance, and social acceptance by observers. Whilst salience of categorization strongly influenced the quality of judgements, visual cues had little if any effect. However, visual cues strongly influenced subjects' confidence in all three sets of judgements, sound and vision subjects being consistently more confident than their sound only counterparts. The findings are discussed in relation to previous research in both social cognition and visual cues.     

关于健康社会性格的跨文化研究

社会性格作为国民素质的重要组成,其健康程度将直接影响精神文明建设的成效。本研究发现,当代人健康社会性格体系由五个因素构成,分别是：进取心、道德感、安定感、领导性与家庭性,为进一步深入探究,本研究采用跨文化方式,将日韩、欧美的参照样本与当代中国人进行比较研究,发现性别与国别因素对于五个因素中的若干项具有显著性影响,体现出跨文化差异性。本研究对于成功塑造跨世纪中国人健康社会性格将具有积极的理论与实践意义。     

The irrelevant sound effect: does speech play a special role?

Memory for order is markedly impaired by the presence of irrelevant sound, even though participants are instructed to ignore the sound. Although a great deal of research has disclosed some features of the task and of the sound that augment or reduce the degree of interference, one important issue of the irrelevant sound effect not yet resolved is whether speech has a special status. This study revealed, within a design of adequate power, that the same physical stimulus (sine wave speech), whether perceived as speech or as nonspeech sound, produces similar degrees of disruption and is less disruptive of serial recall than natural speech. This outcome suggests that the acoustic constituents of sound rather than its source are most influential in determining the impact of irrelevant material.     

The Specificity of Sound Symbolic Correspondences in Spoken Language

Although language has long been regarded as a primarily arbitrary system, sound symbolism, or non‐arbitrary correspondences between the sound of a word and its meaning, also exists in natural language. Previous research suggests that listeners are sensitive to sound symbolism. However, little is known about the specificity of these mappings. This study investigated whether sound symbolic properties correspond to specific meanings, or whether these properties generalize across semantic dimensions. In three experiments, native English‐speaking adults heard sound symbolic foreign words for dimensional adjective pairs (big/small, round/pointy, fast/slow, moving/still) and for each foreign word, selected a translation among English antonyms that either matched or mismatched with the correct meaning dimension. Listeners agreed more reliably on the English translation for matched relative to mismatched dimensions, though reliable cross‐dimensional mappings did occur. These findings suggest that although sound symbolic properties generalize to meanings that may share overlapping semantic features, sound symbolic mappings offer semantic specificity.     

How to select stimuli for environmental sound research and where to find them.

A major methodological challenge in environmental sound research is to select appropriate stimuli. When an experiment involves a large number of sound sources, making custom recordings orproducing sounds live is frequently impractical or, for certain sounds, impossible. Existing databases of environmental sound recordings provide a researcher with a useful alternative. However, finding and selecting suitable sounds in such databases can be difficult because of the great variety of sounds present, poor documentation, questionable recording quality, and required purchasing costs. This article describes a number of practical issues to consider during the stimulus selection process, offers a preliminary compilation of existing resources for obtaining environmental sound recordings, provides some normative perceptual data that can be used as a reference for selecting stimuli and evaluating performance, and lists required characteristics and structural aspects of a research-oriented environmental sound database.     

Look who's talking? Sound changes gaze behaviour in a dynamic social scene

Humans often look at other people in natural scenes, and previous research has shown that these looks follow the conversation and that they are sensitive to sound in audiovisual speech perception. In the present experiment, participants viewed video clips of four people involved in a discussion. By removing the sound, we asked whether auditory information would affect when speakers were fixated, how fixations between different observers were synchronized, and whether the eyes or mouth were looked at most often. The results showed that sound changed the timing of looks—by alerting observers to changes in conversation and attracting attention to the speaker. Clips with sound also led to greater attentional synchrony, with more observers fixating the same regions at the same time. However, looks towards the eyes of the people continued to dominate and were unaffected by removing the sound. These findings provide a rich example of multimodal social attention.     

How to select stimuli for environmental sound research and where to find them

A major methodological challenge in environmental sound research is to select appropriate stimuli. When an experiment involves a large number of sound sources, making custom recordings or producing sounds live is frequently impractical or, for certain sounds, impossible. Existing databases of environmental sound recordings provide a researcher with a useful alternative. However, finding and selecting suitable sounds in such databases can be difficult because of the great variety of sounds present, poor documentation, questionable recording quality, and required purchasing costs. This article describes a number of practical issues to consider during the stimulus selection process, offers a preliminary compilation of existing resources for obtaining environmental sound recordings, provides some normative perceptual data that can be used as a reference for selecting stimuli and evaluating performance, and lists required characteristics and structural aspects of a research-oriented environmental sound database.     

„Die Botschaft hör ich wohl…“

From an evolutionary standpoint language developes from music and sounds. On grounds of that theory the role of intonation, timbre, volume and rhythm in speaking is considered as well as the messages that are transmitted beyond the lexical-semantic level primarily on the phonetic level. The vocal apparatus as a generator of tones, vibrations and rhythm is connected to the body as a whole and functions as a ?resonance body‘. Thereby, it gives the sound, when speaking or listening, a specific quality and meaning. That principle of giving and developing meaning in a sensory way exists already in the communication between mother and child before birth. Besides the secondary linguistical representations it remains lifelong of central importance in the generation and passing on of implicit knowledge. A psychoanalytic treatment is described as an example on how the phonetic level in speech influences the process and advances of therapy.     

Teaching speech sounds to young children using randomly ordered, variably complex task sequences

Three children, ages 4:8 to 5:11, were taught a speech sound using a randomly ordered variably complex task sequence (concurrent treatment), in which practice occurred in randomized easy-to-hard tasks. In an AB research design replicated across participants, the children quickly advanced to 60% accurate productions of the target speech sound and displayed generalization to untaught tasks.     

Reduction in auditory distraction by retrieval strategy

Most research on auditory distraction on task performance focuses on those features of the sound that determine a drop in efficiency, with scant regard for examining the processing properties inherent in the focal task. We report how one such property, retrieval strategy, can also influence the degree of disruption by background sound. Using a task that called for the retrieval of realistic train journey information, we showed that retrieval by categories of verbal sequences was not susceptible to disruption by office sound - 65-75 dB(A). However, versions of the task requiring either free or serial recall showed evidence of disruption, a pattern of results consistent with the changing-state account of the irrelevant sound effect, which highlights the key role of serial rehearsal in determining disruption.     

美国对受试者研究中特殊挑战的观点:遗传研究中的伦理问题

虽然基因研究比其他任何时候更有望了解人类疾病及其在世界各类人群中的表现形式,并且对预防和治疗疾病产生了深远影响,但是它的应用也会极大地改变我们对个体及群体特征。从个体属性及群体意识的角度来看,特别是关于知情同意这个议题,我们会非常清楚地看到遗传研究所面临的挑战。阐述了在美国遗传研究所面临的挑战,讨论了遗传研究进行过程中出现的一系列伦理问题,如：如何正确执行知情同意;研究中可能对受试者产生的标签和歧视行为;遗传流行病研究中出现的伦理问题以及需要关注的社区和民族的伦理问题;对人类组织样本的储存和使用中所出现的伦理问题。强调了知情同意和社区参与遗传研究及在研究中社区代表性的重要性;强烈主张在遗传研究中建立多民族的合作是确保研究的顺利进行的基础。     

Audiovisual influences on the perception of visual apparent motion: exploring the effect of a single sound

Previous research has shown that irrelevant sounds can facilitate the perception of visual apparent motion. Here the effectiveness of a single sound to facilitate motion perception was investigated in three experiments. Observers were presented with two discrete lights temporally separated by stimulus onset asynchronies from 0 to 350 ms. After each trial, observers classified their impression of the stimuli using a categorisation system. A short sound presented temporally (and spatially) midway between the lights facilitated the impression of motion relative to baseline (lights without sound), whereas a sound presented either before the first or after the second light or simultaneously with the lights did not affect motion impression. The facilitation effect also occurred with sound presented far from the visual display, as well as with continuous-sound that was started with the first light and terminated with the second light. No facilitation of visual motion perception occurred if the sound was part of a tone sequence that allowed for intramodal perceptual grouping of the auditory stimuli prior to the critical audiovisual stimuli. Taken together, the findings are consistent with a low-level audiovisual integration approach in which the perceptual system merges temporally proximate sound and light stimuli, thereby provoking the impression of a single multimodal moving object.     

An irrelevant speech effect with repeated and continuous background speech

The irrelevant speech effect is the impairment of task performance by the presentation of to-be-ignored speech stimuli. Typically, the irrelevant speech comprises a variety of sounds, but previous research (e.g., Jones, Madden, & Miles, 1992) has suggested that the deleterious effect of background speech is virtually eliminated if the speech comprises repetitions of a sound (e.g., “be, be, be”) or a single continuous sound (e.g., “beeeeeee”). Four experiments are reported that challenge this finding. Experiments 1, 2, and 4 show a substantial impairment in serial recall performance in the presence of a repeated sound, and Experiments 3 and 4 show a similar impairment of serial recall in the presence of a continuous sound. The relevance of these findings to several explanations of the irrelevant speech effect is discussed.     

Three-dimensional virtual environments for blind children.

Information technologies are increasingly helping to integrate and socially include people with visual disabilities. Computing technologies have contributed grandly to attain this goal through innovative techniques and applications. Virtual environments, I/O interfaces, and sound based applications altogether with usability and cognitive impact studies are some of the most used research designs for children with visual disabilities. This study presents the design and usability evaluation of three-dimensional (3D) interactive environments for children with visual disabilities. We introduce AudioChile and AudioVida, interactive virtual environments that can be navigated through 3D sound to enhance spatiality and immersion throughout the environments 3D sound is used to orientate, to avoid obstacles, and to identify the position of diverse personages and objects within the environment. Usability evaluation results indicated that sound can be fundamental for attention and motivation purposes during interaction.     

Chaplaincy research: a case study

The authors report the pragmatic elements of conducting an empirical chaplaincy research project. The article offers the step-by-step process of implementing, coordinating, and completing a sound quantitative research project. The authors offer a definitive answer to the question, "Can a staff chaplain integrate providing pastoral care and doing a quantitative research project as principle investigator"?