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Multi-sensory perception of affect: Evidence from behavioural, neurophysiological and brain-imaging methods
Get PDFMulti-sensory perception of affect:Evidence from behavioural, neurophysiological and brain-imaging methods
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
The selective impact of affective prosody on recognition of facial expressions. Abstract
No full textFace detection dissociates from face recognition: evidence from ERPs and the naso-temporal asymmetry (Abstract)
No full textNeuropsychological data indicate that face processing could be distributed among two functionally and anatomically distinct mechanisms, one specialised for detection and the other aimed at recognition (de Gelder & Rouw, 2000; 2001). These two mechanisms may be implemented in different interacting regions of the human brain with sub-cortical structures (SC) dedicated to face detection and cortical structures (FFA and LOC) dedicated to face recognition. This model is consistent with recent data from developmental studies showing that the temporal hemifield of the retinotectal system may be involved in face preference in neo-natal observers. The present study used electrophysiological measurements (high density EEG) to test the hypothesis that neuro-anatomical correlates of a primitive face detection mechanism could be found. Participants were 10 normal adults and two developmental prosopagnosics. They were shown B/W photo-realistic or schematic images of faces and objects presented for 30, 50 or 100 ms. Monocular stimulus presentations were used with the stimulus presented in the periphery in order to stimulate either the temporal or nasal hemifield. We focussed on early extrastriate activities (occipital P1 and occipito-temporal negativities). Our results provide evidence for a temporal-nasal asymmetry for faces at around 150 ms. The same pattern obtains in normal adults and in developmental prosopagnosics but only for shorter durations
The time course of intermodal binding between seeing and hearing affective information. Abstract
No full textSelective disruption of audio-visual interaction studied with transcranial magnetic stimulation Abstract
No full textMany studies have shown that the brain often combines in a single percept auditory and visual information provided the two sensory inputs are temporally and spatially contiguous, a phenomenon called multi-sensory integration. What is less well understood at present is whether the type of pairing as defined by the stimulus domain and by the type of association between auditory and visual stimuli also plays a role. Evidence from neuropsychology indicates that disruption of audio-visual interactions is often domain¿specific in the sense that some audio-visual pairings are disrupted (for example audio-visual speech) while others are preserved (for example ventriloquism or multisensory perception of affect). The present study extends the available methods to understand multisensory processes by the use of Transcranial Magnetic Stimulation (TMS). We compared the impact of TMS on two types of pairs that have extensively been used in the literature (naturalistic voice-face pairs vs. arbitrary tone-shape pairs). Based on earlier findings we selected three sites of stimulation (pre-frontal, left and right posterior parietal sites). Participants were instructed to perform a similar speeded categorisation task in all conditions. TMS applied over the left posterior parietal cortex at 150 ms post-stimulus onset and later disrupted integration as measured by the loss of the latency advantage for categorisation in the audiovisual condition. This effect was limited to the arbitrary pairs indicating a dissociation between Naturalistic and Arbitrary pairs for this stimulation site
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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