Perception with compensatory devices: from sensory substitution to sensorimotor extension

Sensory substitution devices provide through an unusual sensory modality (the substituting modality, e.g., audition) access to features of the world that are normally accessed through another sensory modality (the substituted modality, e.g., vision). In this article, we address the question of which sensory modality the acquired perception belongs to. We have recourse to the four traditional criteria that have been used to define sensory modalities: sensory organ, stimuli, properties, and qualitative experience ( Grice, 1962 ), to which we have added the criteria of behavioral equivalence ( Morgan, 1977 ), dedication ( Keeley, 2002 ), and sensorimotor equivalence ( O'Regan & Noë, 2001 ). We discuss which of them are fulfilled by perception through sensory substitution devices and whether this favors the view that perception belongs to the substituting or to the substituted modality. Though the application of a number of criteria might be taken to point to the conclusion that perception with a sensory substitution device belongs to the substituted modality, we argue that the evidence leads to an alternative view on sensory substitution. According to this view, the experience after sensory substitution is a transformation, extension, or augmentation of our perceptual capacities, rather than being something equivalent or reducible to an already existing sensory modality. We develop this view by comparing sensory substitution devices to other "mind-enhancing tools" such as pen and paper, sketchpads, or calculators. An analysis of sensory substitution in terms of mind-enhancing tools unveils it as a thoroughly transforming perceptual experience and as giving rise to a novel form of perceptual interaction with the environment.     

Perceptual interactions in a minimalist virtual environment

How in real-life or through the use of technical devices can we recognize the presence of other persons and under what conditions can we differentiate them from objects? In order to approach this question, in the study reported here we explored the most basic conditions necessary for participants to recognize the presence of another person during a perceptual interaction. We created a mini-network of two minimalist devices and investigated whether participants were able to differentiate the perception of another person from the perception of a fixed and a mobile object even when the pattern of sensory stimulation was reduced to a bare minimum. We show that participants can recognize when the all-or-none tactile stimulation they experienced was attributable to an encounter with the other participant's avatar or the mobile object rather than with a fixed object. Participants were also able to establish different strategies in order to favor the situations of mutual perception. Thus, in the minimalist conditions of our experiment, the perception of another intentional subject was not based purely on any particular shape or objective trajectories of displacement; it was also based on properties that are intrinsic to the joint perceptual activity itself.     

Identification and integration of sensory modalities: Neural basis and relation to consciousness

A key question in studying consciousness is how neural operations in the brain can identify streams of sensory input as belonging to distinct modalities, which contributes to the representation of qualitatively different experiences. The basis for identification of modalities is proposed to be constituted by self-organized comparative operations across a network of unimodal and multimodal sensory areas. However, such network interactions alone cannot answer the question how sensory feature detectors collectively account for an integrated, yet phenomenally differentiated experiential content. This problem turns out to be different from, although related to, the binding problem. It is proposed that the neural correlate of an enriched, multimodal experience is constituted by the attractor state of a dynamic associative network. Within this network, unimodal and multimodal sensory maps continuously interact to influence each other’s attractor state, so that a feature change in one modality results in a fast re-coding of feature information in another modality. In this scheme, feature detection is coded by firing-rate, whereas firing phase codes relational aspects.     

Does theoretical background influence therapists' attitudes to therapist self‐disclosure? A qualitative study

Aims: This study investigated therapists' attitudes towards therapist self‐disclosure over different theoretical orientations and to establish how classical theoretical background and training effected and informed practice. Classical theoretical background was intended to refer to traditional Psychodynamic understanding. Method: Participants were experienced therapists drawn from four groups by a recruitment screening measure. Three groups were from the students’ cohort within a university Masters programme in Psychological Therapies. Participants were practicing from CBT, Systemic and Psychodynamic orientations. A further group was drawn from Person‐Centred therapist/trainers at a further education College. Data was gathered using focus groups and analysed using thematic analysis. Findings: Three major and one lesser theme emerged. These revealed that there was a spectrum of willingness to disclose throughout all groups, classical training influenced all participants; total restriction of TSD was impracticable and attitudes were affected by concerns for the therapeutic relationship. Implications for practice: TSD needs to be more thoroughly explored within therapy training and supervision. A structured framework could help inform practice. Conclusions: The study supported the idea that Classical Training influenced TSD.     

厌恶加工的神经基础

厌恶是由令人不愉悦、反感的事物诱发的情绪。根据刺激类型的不同, 厌恶可以分为不同的类型。脑岛和基底节是厌恶加工的主要脑区, 前扣带回、杏仁核、丘脑、内侧前额叶也参与厌恶加工。对已有研究的总结发现, 不同类型的厌恶、不同感觉通道的厌恶加工可能具有不同的神经基础。在未来的研究中, 应当注重研究厌恶加工的认知机制、神经基础以及与厌恶相关的神经递质等问题。     

Playing on the typewriter, typing on the piano: manipulation knowledge of objects

Two experiments investigated sensory/motor-based functional knowledge of man-made objects: manipulation features associated with the actual usage of objects. In Experiment 1, a series of prime-target pairs was presented auditorily, and participants were asked to make a lexical decision on the target word. Participants made a significantly faster decision about the target word (e.g. ‘typewriter’) following a related prime that shared manipulation features with the target (e.g. ‘piano’) than an unrelated prime (e.g. ‘blanket’). In Experiment 2, participants' eye movements were monitored when they viewed a visual display on a computer screen while listening to a concurrent auditory input. Participants were instructed to simply identify the auditory input and touch the corresponding object on the computer display. Participants fixated an object picture (e.g. “typewriter”) related to a target word (e.g. ‘piano’) significantly more often than an unrelated object picture (e.g. “bucket”) as well as a visually matched control (e.g. “couch”). Results of the two experiments suggest that manipulation knowledge of words is retrieved without conscious effort and that manipulation knowledge constitutes a part of the lexical-semantic representation of objects.     

Does the nature of the experience influence suggestibility? A study of children's event memory

Two experiments examined the effects of event modality on children's memory and suggestibility. In Experiment 1, 3- and 5-year-old children directly participated in, observed, or listened to a narrative about an event. In an interview immediately after the event, free recall was followed by misleading or leading questions and, in turn, test recall questions. One week later children were reinterviewed. In Experiment 2, 4-year-old children either participated in or listened to a story about an event, either a single time or to a criterion level of learning. Misleading questions were presented either immediately or 1 week after learning, followed by test recall questions. Five-year-old children were more accurate than 3-year-olds and those participating were more accurate than those either observing or listening to a narrative. However, method of assessment, level of event learning, delay to testing, and variables relating to the misled items also influenced the magnitude of misinformation effects.     

Heritage space,multiple temporalities,and the reproduction of Guangzhou Overseas Chinese Village

This paper investigates the everyday experiences of long-term residents during the urban heritage revitalization process of Guangzhou Overseas Chinese Village (GOCV) as China's first overseas Chinese village. Drawing upon insights from the recent theories of multiple temporalities, this paper argues that the everyday sensory experiences of long-term residents during the urban heritage revitalization process can be understood through three interconnected temporal modes (past, present, and future). These modes reflect the sociopolitical context of different periods and influence the everyday rhythms and practices of community residents. Specifically, regarding the past, patriotic fervor, a shared identity, and the experience of living collectively have created a “happy home for returned overseas Chinese”. In terms of the present, the market-oriented reform and commodification of housing has had a profound impact on the built forms and meaning systems of the neighborhood, leading to long-term residents' nostalgia for the past and resistance to present changes in the everyday rhythms. Lastly, based on an envisioned future, long-term residents carry out specific preservation practices to maintain and enhance their place identity. This article explores the approaches to enrich the urban heritage research by illuminating the importance of temporality for understanding the spatial (re)production of living urban heritage.     

The backstage of urban ambiances: When atmospheres pervade everyday experience

This paper explores a new way of designing and experimenting with the city. How are we to conceptualize the changes in contemporary cities on the basis of their ambiances? What about the sensory and emotional production of urban territories? What is at stake when our aim is no longer to design space but also to install an atmosphere? In order to answer such questions, rather than offering a formal definition of what an ambiance may be, I intend to show from what it proceeds, on what it is based, what it produces and transforms in urban life. The focus is exploring five ambiance operating modes in the province of urban design: establishing the sensory as a field of action, composing with affective tonalities, giving consistency to urban situations, maintaining spaces over time and playing with imperceptible transformations. Each of these operating modes can account for how a physical environment manages to become a lived ambiance, how a world of built forms manages to become a world of sensory atmospheres. Starting with the sensory environment itself, I show how it is increasingly becoming a domain of design and research. Then I emphasize on the role of affect in everyday urban situations and daily social activities. Thirdly I explore the pervasive character of an ambiance and question its capacity to unify an experience. I continue by pointing out the temporal dynamic of an ambiance and the necessity to sustain a sense of continuity of the environment. Finally I emphasize on the importance of micro-phenomena in the quality and immersive power of an ambiance. These five operating modes of ambiance enables us to focus on the very ordinary sensory fabric of urban life and its issues.     

Mapping the structure of perceptual and visual–motor abilities in healthy young adults

The ability to quickly detect and respond to visual stimuli in the environment is critical to many human activities. While such perceptual and visual–motor skills are important in a myriad of contexts, considerable variability exists between individuals in these abilities. To better understand the sources of this variability, we assessed perceptual and visual–motor skills in a large sample of 230 healthy individuals via the Nike SPARQ Sensory Station, and compared variability in their behavioral performance to demographic, state, sleep and consumption characteristics. Dimension reduction and regression analyses indicated three underlying factors: Visual–Motor Control, Visual Sensitivity, and Eye Quickness, which accounted for roughly half of the overall population variance in performance on this battery. Inter-individual variability in Visual–Motor Control was correlated with gender and circadian patters such that performance on this factor was better for males and for those who had been awake for a longer period of time before assessment. The current findings indicate that abilities involving coordinated hand movements in response to stimuli are subject to greater individual variability, while visual sensitivity and occulomotor control are largely stable across individuals.