Search results for "speech"

Influence of Global Structure on Musical Target Detection and Recognition

1998

The present study adapted a paradigm used in visual perception by Biederman, Glass, and Stacy (1973) and analyzed the influence of a coherent global context on the detection and recognition of musical target excerpts. Global coherence was modified by segmenting minuets into chunks of four, two, or one bar. These chunks were either reordered (Experiments 1, 3, 4, 5) or transposed to different keys (Experiment 2). The results indicate that target detection is influenced only by a reorganization on a very local level (i.e. chunks of one bar). Context incoherence did not influence the recognition of the real targets, but rendered the rejection of wrong target excerpts (foils) more difficult. Th…

Short article: Does the brain regularize digits and letters to the same extent?

2009

The cognitive system does not just act as a mirror from the sensory input; instead, it tends to normalize this information. Given that letter processing seems to be much more specialized than digit processing in the cortex, we examined whether the regularization process occurs differently from digits to letters than from letters to digits: We employed a masked priming same/different experiment (e.g., probe, VESZED; prime, V35Z3D; and target, VESZED). When embedded in letter strings, digits that resemble letters (e.g., 3 and 5 in V35Z3D-VESZED) tend to be encoded in a letter-like manner, whereas when embedded in digit strings, letters that resemble digits (e.g., E and S in 9ES7E2–935732) te…

Position Coding in Two-Digit Arabic Numbers

2011

Digit position coding in two-digit Arabic numbers was examined in two masked priming experiments. In Experiment 1, participants had to decide whether the presented stimulus was a two-digit Arabic number (e.g., 67) or not (e.g., G7). Target stimuli could be preceded by a prime which (i) shared one digit in the initial position (e.g., 13-18), (ii) shared one digit but in a different position (83-18), and (iii) was a transposed number (81-18). Two unrelated control conditions, equalized in terms of the distance between primes and targets with the experimental conditions, were also included (e.g., 79-18). Results showed a priming effect only when prime and target shared digits in the same posi…

Corrigendum to “Electrophysiological signatures of masked transposition priming in a same-different task: Evidence with strings of letters vs. pseudo…

2012

wo images were inadvertently left out of the 2nd paragraph of the reviously published article. Please see corrected paragraph and mages below. In a series of behavioural experiments, Garcia-Orza et al. [10] xamined whether masked transposition priming is specific to leter processing. They employed a masked priming same-different atching task in which participants were required to press a utton if cue and target were the same and to press another utton if cue and target were different (see [15,16] for reviews f this task). A briefly presented transposed-letter masked prime as presented immediately before the target stimulus. Garciarza et al. ([10] Experiments 1–4]) found a masked transpositi…

ERP correlates of the processing of speech sound prototipicality in Hungarian dyslexic and normal readers

2010

Lexical competition in phonological priming: Assessing the role of phonological match and mismatch lengths between primes and targets

2003

In five experiments, we examined lexical competition effects using the phonological priming paradigm in a shadowing task. Experiments 1A and 1B replicate and extend Slowiaczek and Hamburger's (1992) observation that inhibitory effects occur when the prime and the target share the first three phonemes (e.g., /bRiz/-/bRik/) but not when they share the first two phonemes (e.g., /bRepsilonz/-/bRik/). This observation suggests that lexical competition depends on the length of the phonological match between the prime and the target. However, Experiment 2 revealed that an overlap of two phonemes is sufficient to cause an inhibitory effect provided that the primes mismatched the targets only on the…

Distinct Patterns of Functional Connectivity During the Comprehension of Natural, Narrative Speech.

2020

Recent continuous task studies, such as narrative speech comprehension, show that fluctuations in brain functional connectivity (FC) are altered and enhanced compared to the resting state. Here, we characterized the fluctuations in FC during comprehension of speech and time-reversed speech conditions. The correlations of Hilbert envelope of source-level EEG data were used to quantify FC between spatially separate brain regions. A symmetric multivariate leakage correction was applied to address the signal leakage issue before calculating FC. The dynamic FC was estimated based on a sliding time window. Then, principal component analysis (PCA) was performed on individually concatenated and te…

Una Aportación A La Lingüística: Los Sonidos Del Habla Y Su Organización Funcional

2007

The aim of this paper is to make a contribution to the study of the functional organization of phonological units, by assuming the theoretical and methodological perspective of mathematical Chaos Theory. Indexes of structuration and redundancy of the systems that contain these kinds of units are defined and a sample of languages is analyzed following this criterion. The treatment of the data in statistical terms, i.e. the number of phonological units of a language, indexes of structuration and the relationship between the number of phonological units and indexes of structuration, reveals a meaningful distance to normal distribution. The treatment of the data by means of Lyapunov test permit…

The geometry of surfaces in 4-space from a contact viewpoint

1995

We study the geometry of the surfaces embedded in ℝ4 through their generic contacts with hyperplanes. The inflection points on them are shown to be the umbilic points of their families of height functions. As a consequence we prove that any generic convexly embedded 2-sphere in ℝ4 has inflection points.

Speech Intelligibility Analysis and Approximation to Room Parameters through the Internet of Things

2021

In recent years, Wireless Acoustic Sensor Networks (WASN) have been widely applied to different acoustic fields in outdoor and indoor environments. Most of these applications are oriented to locate or identify sources and measure specific features of the environment involved. In this paper, we study the application of a WASN for room acoustic measurements. To evaluate the acoustic characteristics, a set of Raspberry Pi 3 (RPi) has been used. One is used to play different acoustic signals and four are used to record at different points in the room simultaneously. The signals are sent wirelessly to a computer connected to a server, where using MATLAB we calculate both the impulse response (IR…