Search results for "speech"

Clinical-anatomical correlation in a selective phonemic speech production impairment

2004

Although phonemic paraphasias are common in aphasic disorders, including Broca's aphasia, conduction aphasia and transcortical motor aphasia, selective phonemic speech production impairment, or phonemic disintegration, is unusual. A patient with a selective phonemic speech production disorder underwent clinical, neuropsychological and structural neuroradiological assessment over a period of 6 years. The disorder was characterised by phonemic paraphasias (phonemic disintegration) with preserved comprehension and naming. Imaging showed a focal lesion in the white matter of the left precentral gyrus and, to a lesser extent, the posterior part of the left middle frontal gyrus, with overlying co…

Towards a unified process model for graphemic buffer disorder and deep dysgraphia

2006

Models based on the competitive queuing (CQ) approach can explain many of the effects on dysgraphic patients’ spelling attributed to disruption of the “graphemic output buffer”. Situating such a model in the wider spelling system, however, raises the question of what happens when input to the buffer (e.g., from a semantic system) is degraded while the buffer remains intact. We present a preliminary exploration of predictions following from the CQ approach. We show that the CQ account of the graphemic buffer predicts and explains the finding that deep dysgraphic patients generally show features of graphemic buffer disorder, as disrupted input from a damaged semantic system has an inevitable …

The impact of deep dysgraphia on graphemic output buffer disorders

2004

This article describes an investigation into the residual writing skills of a severely dysgraphic patient (DA). We found that they were powerfully influenced by a number of lexical variables (lexicality, frequency, imageability, length and geminates). His error pattern was characterized by semantic, lexical, substitution, deletion errors and fragment responses that preserved the first letter. Thus, DA's written spelling was characterized by both deep dysgraphic and graphemic output buffer effects. It is proposed that this pattern of performance represents a new "putative functional syndrome."

Auditory brain stem responses in patients with human immunotropic virus infection of different stages.

1992

Thirty patients (26 men, 4 women) with human immunotropic virus infection of different stages were examined. Eleven patients had a history of i.v. drug abuse, nine patients had a history of treated lues infection, and one patient suffered from Kaposi's sarcoma. At the time of the examination, opportunistic infections or acute encephalitis were not apparent in any patient. All patients underwent otoneurological examinations, including pure-tone audiometry, caloric vestibular testing, and recording of the auditory brain stem responses (ABR). Six patients reported onset of hearing impairment during the last 3 yr. Two of them had flat sensorineural hearing loss; in the other cases, pure-tone au…

La “desconexión digital” a lomos de la seguridad y salud en el trabajo

2021

The preponderance given to teleworking or remote work due to the health crisis is pushing to blur the line that separates effective work time from leisure and rest time. In the end, it practically causes the employee to never disconnect from work. And this is so because Information and Communication Technologies (ICT) push workers to have a constant time and location availability, even outside their working hours. In this sense, communications from bosses, co-workers or even clients through different means like now are not surprising: emails that need an urgent answer, phone calls at untimely hours or, especially in the sense of this article, through the smartphone, either by SMS messages -…

Emergency Detection with Environment Sound Using Deep Convolutional Neural Networks

2020

In this paper, we propose a generic emergency detection system using only the sound produced in the environment. For this task, we employ multiple audio feature extraction techniques like the mel-frequency cepstral coefficients, gammatone frequency cepstral coefficients, constant Q-transform and chromagram. After feature extraction, a deep convolutional neural network (CNN) is used to classify an audio signal as a potential emergency situation or not. The entire model is based on our previous work that sets the new state of the art in the environment sound classification (ESC) task (Our paper is under review in the IEEE/ACM Transactions on Audio, Speech and Language Processing and also avai…

A nonstationary model for the analysis of transient speech signals

1987

In this correspondence, a model is presented for the analysis of transient speech signals, which is based on a sum of the impulsive responses corresponding to a number of poles with time-dependent parameters. The aim of this analysis is to obtain discriminative features of the different transient elements of speech.

Signal Processing for Image Enhancement and Multimedia Processing

2008

P300-based brain computer interface experimental setup

2009

A Brain-Computer interface (BCI) is a communication system that enables the generation of a control signal from brain signals such as sensorymotor rhythms and evoked potentials; therefore, it constitutes a novel communication option for people with severe motor disabilities (such as Amyotrophic Lateral Sclerosis patients). This paper presents the development of a P300-based BCI. This prototype uses a homemade six-channel electroencephalograph for the acquisition of the signals, and a visual stimulation matrix; since this matrix contains letters of the alphabet as well as images associated to them, it permits word-writing and the elaboration of messages with the images. To process the signal…

Language and Symbolic Play in Toddlers

1997

Language-play relations were examined in 110 18-month-old toddlers by observing their play actions in the Symbolic Play Test and assessing their language skills with the CDI parental report and the Reynell Developmental Language Scales. Significant associations between both language comprehension and production (vocabulary, use of suffixes, utterance length) and play were found when percentage of symbolic play was used as the measure of play competence. The total play score which included both functional-relational toy manipulation and symbolic play was not as strongly associated with the language measures. In both play measures relations were, however, higher between play and language com…