The shape of words in the brain

The principle of arbitrariness in language assumes that there is no intrinsic relationship between linguistic signs and their referents. However, a growing body of sound-symbolism research suggests the existence of some naturally-biased mappings between phonological properties of labels and perceptual properties of their referents (Maurer, Pathman, & Mondloch, 2006). We present new behavioural and neurophysiological evidence for the psychological reality of sound-symbolism. In a categorisation task that captures the processes involved in natural language interpretation, participants were faster to identify novel objects when label–object mappings were sound-symbolic than when they were not. Moreover, early negative EEG-waveforms indicated a sensitivity to sound-symbolic label–object associations (within 200 ms of object presentation), highlighting the non-arbitrary relation between the objects and the labels used to name them. This sensitivity to sound-symbolic label–object associations may reflect a more general process of auditory–visual feature integration where properties of auditory stimuli facilitate a mapping to specific visual features.     

知物、用物、惜物——释科学精神与人文精神的意含

去年八月底,由本会主办,中国人民大学哲学系、中国社会科学院哲学所、辅仁大学哲学系协办,澳门文化局赞助,在澳门举行了“科学精神与人文精神”研讨会。两岸三地有二十四所大学及研究院的四十多位学者参加,共宣读了三十三篇论文。《哲学动态》对大会发表了《评述》以作综合报导。这里选出与该刊范围有关的大会论文,陆续刊登。希望对于促进哲学的学术研究有所帮助。 本栏目由澳门特别行政区政府文化局资助,基于学术自由和文责自负的原则,其中内容并不代表澳门特别行政区政府文化局之立场。     

Unilateral brain damage effects on processing homonymous and polysemous words

Using an auditory semantic priming paradigm, the present study investigated the abilities of left-hemisphere-damaged (LHD) non-fluent aphasic, right-hemisphere-damaged (RHD) and normal control individuals to access, out of context, the multiple meanings of three types of ambiguous words, namely homonyms (e.g., "punch"), metonymies (e.g., "rabbit"), and metaphors (e.g., "star"). In addition, the study tested certain predictions of the "suppression deficit" and "coarse semantic coding" hypotheses that have been proposed to account for the linguistic deficits typically observed after RH damage. Homonymous, metonymous, and metaphorical words were used as primes followed after a short (100 ms) or a long (1000 ms) inter-stimulus interval (ISI) by dominant-meaning-related, subordinate-meaning-related or unrelated target words. No significant group effects were found, and for both ISIs, dominant- and subordinate-related targets were facilitated relative to unrelated control targets for the homonymy and metonymy conditions. In contrast, for the metaphor condition, only targets related to the dominant meaning were facilitated. These findings provide only partial support for the "suppression deficit" hypothesis and no support for the "coarse semantic coding" hypothesis (as interpreted herein) indicating that patients with focal LH or RH damage can access the multiple meanings of ambiguous words and exhibit processing abilities comparable to those of older normal control subjects, at least at the single-word level.     

Watching the infant brain learn words: effects of vocabulary size and experience

Previous investigations comparing auditory event-related potentials (ERPs) to words whose meanings infants did or did not comprehend, found bilateral differences in brain activity to known versus unknown words in 13-month-old infants, in contrast with unilateral, left hemisphere, differences in activity in 20-month-old infants. We explore two alternative explanations for these findings. Changes in hemispheric specialization may result from a qualitative shift in the way infants process known words between 13 and 20 months. Alternatively, hemispheric specialization may arise from increased familiarity with the individual words tested. We contrasted these two explanations by measuring ERPs from 20-month-old infants with high and low production scores, for novel words they had just learned. A bilateral distribution of ERP differences was observed in both groups of infants, though the difference was larger in the left hemisphere for the high producers. These findings suggest that word familiarity is an important factor in determining the distribution of brain regions involved in word learning. An emerging left hemispheric specialization may reflect increased efficiency in the manner in which infants process familiar and novel words.     

Two languages, one developing brain: event-related potentials to words in bilingual toddlers

Infant bilingualism offers a unique opportunity to study the relative effects of language experience and maturation on brain development, with each child serving as his or her own control. Event-related potentials (ERPs) to words were examined in 19- to 22-month-old English-Spanish bilingual toddlers. The children's dominant vs. nondominant languages elicited different patterns of neural activity in the lateral asymmetry of an early positive component (P100), and the latencies and distributions of ERP differences to known vs. unknown words from 200-400 and 400-600 ms. ERP effects also differed for 'high' and 'low' vocabulary groups based on total conceptual vocabulary scores. The results indicate that the organization of language-relevant brain activity is linked to experience with language rather than brain maturation.     

Nature, Education and Things

In this essay it is argued that the educational philosophy of John Dewey gains in depth and importance by being related to his philosophy of nature, his metaphysics. The result is that any experiental process is situated inside an event, an existence, a thing, and I try to interpret this “thing” as schools or major cultural events such as the French revolution. This basic view is correlated to Dewey’s concept of transaction, of experience and finally, it is related to a discussion of methods in education.     

Of words,tools, and actions

The author rejects Leon Galis's claim (Inquiry, Vol. II, No. 2) that in ‘Of Words and Tools’ (Inquiry, Vol. 10, No. 2) he attacks a form of the ‘use’ theory of meaning that no one has held. Galis's other claim, that the author criticizes a needlessly weak form of the theory, is found to be justified, but the author argues that his procedure was adequate, and parallel to that oi Galis's own reconstruction of the ‘use’ theory in terms of ‘goal‐directed action’. Difficulties in this reconstruction are pointed out, and some meta‐semantic issues about theories of meaning raised.     

Neurophysiological codes of words in subcortical structures of the human brain.

Investigations into the cerebral mechanisms of mental activity, using modern mathematical-technical capabilities, allows the transition from study of structural-functional organization to a new stage: the study of neural coding of these cerebral processes.Here we present the results of studying the elementary components of the neurophysiological pattern-code of words and the neurophysiological correlates of the simplest mental processes, generalization, and mental conclusion. The elementary components of the pattern-code are the group sequences of neuronal firing with comparatively stable intervals in between. The processes of mental conclusion and decision making occur when full, compressed, and complex patterns-codes appear in the brain.In discussing the data obtained, the problems of relationship between a part and the whole in activity of cerebral systems is considered, and the hypothesis of a dynamic pace-maker mechanism for cerebral organization of mental activity, is proposed.     

Children,words and symptomatic acts

Referring to communicative material from an autistic and a psychotic child, the author argues for the primary importance of understanding children's words and actions in terms of their conscious or intended meaning before seeking a latent, symbolic meaning for them and attempting to convey this to the child in therapy. In furtherance of the argument the author introduces and develops a distinction between the signification and the significance of expressive utterances, and explains its relevance to the development of children's concepts by means of clinical material.     

Event-related brain potentials dissociate repetition effects of high-and low-frequency words

Event-related brain potentials (ERPs) were recorded while subjects detected nonwords interspersed among sequences of words of high or low frequency of occurrence. In Phase 1, a proportion of the words were repeated after six intervening items. In Phase 2, which followed after a break of approximately 15 min, the words were either repeats of items presented in the previous phase or new. Unrepeated low-frequency words evoked larger N400 components than did high-frequency items. In Phase 1, this effect interacted with repetition, such that no frequency effects were observed on N400s evoked by repeated words. In addition, the post-500-msec latency region of the ERPs exhibited a substantial repetition effect for low-frequency words, but did not differentiate unrepeated and repeated high-frequency words. In Phase 2, ERPs evoked by "old" and "new" high-frequency words did not differ in any latency region, while those evoked by old and new low-frequency words differed only after 500 msec. The interactive effects of frequency and repetition suggest that these variables act jointly at multiple loci during the processing of a word. The specificity of the post-500-msec repetition effect for low-frequency words may reflect a process responsive to a discrepancy between words' intra and extraexperimental familiarity.     

Context effects of pictures and words in naming objects,reading words,and generating simple phrases

In five language production experiments it was examined which aspects of words are activated in memory by context pictures and words. Context pictures yielded Stroop-like and semantic effects on response times when participants generated gender-marked noun phrases in response to written words (Experiment 1A). However, pictures yielded no such effects when participants simply read aloud the noun phrases (Experiment 2). Moreover, pictures yielded a gender congruency effect in generating gender-marked noun phrases in response to the written words (Experiments 3A and 3B). These findings suggest that context pictures activate lemmas (i.e., representations of syntactic properties), which leads to effects only when lemmas are needed to generate a response (i.e., in Experiments 1A, 3A, and 3B, but not in Experiment 2). Context words yielded Stroop-like and semantic effects in picture naming (Experiment 1B). Moreover, words yielded Stroop-like but no semantic effects in reading nouns (Experiment 4) and in generating noun phrases (Experiment 5). These findings suggest that context words activate the lemmas and forms of their names, which leads to semantic effects when lemmas are required for responding (Experiment 1B) but not when only the forms are required (Experiment 4). WEAVER++ simulations of the results are presented.     

Context effects of pictures and words in naming objects, reading words, and generating simple phrases

In five language production experiments it was examined which aspects of words are activated in memory by context pictures and words. Context pictures yielded Stroop-like and semantic effects on response times when participants generated gender-marked noun phrases in response to written words (Experiment 1A). However, pictures yielded no such effects when participants simply read aloud the noun phrases (Experiment 2). Moreover, pictures yielded a gender congruency effect in generating gender-marked noun phrases in response to the written words (Experiments 3A and 3B). These findings suggest that context pictures activate lemmas (i.e., representations of syntactic properties), which leads to effects only when lemmas are needed to generate a response (i.e., in Experiments 1A, 3A, and 3B, but not in Experiment 2). Context words yielded Stroop-like and semantic effects in picture naming (Experiment 1B). Moreover, words yielded Stroop-like but no semantic effects in reading nouns (Experiment 4) and in generating noun phrases (Experiment 5). These findings suggest that context words activate the lemmas and forms of their names, which leads to semantic effects when lemmas are required for responding (Experiment 1B) but not when only the forms are required (Experiment 4). WEAVER++ simulations of the results are presented.     

Gestural development,dual-directional signaling,and the transition to words

This paper describes the emergence and development of three object-related gestures: pointing, extending objects, and open-handed reaching, in four first-born infants from 9 to 18 months during natural interactions with their mothers. It examines the changing characteristics of the gestures and the acquisition of conventional words in accompaniment. Furthermore, it investigates the role that the capacity for dual-directional signaling, sending simultaneously two coordinated but divergently directed nonverbal signals of gesture and gaze, may play in this transition. Analysis revealed that dual-directional signaling appeared concurrently across gestures. In addition, dual-directional signaling was employed in a socially adjusted manner, more with pointing, especially spontaneous pointing when the mothers' attention could not be assumed. Verbal accompaniments appeared with gestures only when the children had mastered dual-directional signaling. Then words emerged approximately simultaneously with more than one kind of gesture.     

Alcohol dependency,recovery, and social words

The influence of social support to recovery is a well‐known phenomenon. We supposed that examining relapsed and recovered alcohol‐dependent patients' autobiography vocabularies we could detect special differences. First, we examined group of relapsed patients treated in hospital at least twice within a year (n = 30). We chose for at least 2 year abstinent persons into the second group (n = 20). We compared their autobiographies by the Atlas.ti 5.0 content analyzing software and detected higher frequency of social words referring to social connections and social activity in the recovered patients' groups. The chi‐square test showed significant difference (p = 0.000155 < 0.01) between the frequency of social words of the two groups. We could estimate the spontaneous indicators of their social support via the content analysis.