Effect of continuous speech and non-speech signals on stuttering frequency in adults who stutter.

The inhibitory effects of continuously presented audio signals (/a/, /s/, 1,000 Hz pure-tone) on stuttering were examined. Eleven adults who stutter participated. Participants read four 300-syllable passages (i.

The effects of frequency altered feedback on the reading processes of adults with reading disorders.

Various factors have been shown to influence the reading comprehension of reading disordered individuals including altered auditory feedback. This study investigated the influence of frequency altered feedback (FAF) on the reading comprehension and decoding accuracy of reading disordered and normal reading adults. Participants consisted of 30 college students with normal and disordered reading abilities.

The effects of frequency altered feedback on reading comprehension abilities of normal and reading disordered children.

The effects of frequency altered feedback (FAF) on the reading comprehension levels and error types of normal children and children with reading disorders were examined. Participants read aloud third, sixth, and ninth grade level material in non-altered auditory feedback (NAF) and FAF conditions. Comprehension improved significantly when the reading disordered children read aloud under the FAF listening condition, regardless of the reading level.

The effects of mild traumatic brain injury on confrontation naming in adults.

Primary Objective: To compare confrontation-naming in adults with MTBI to a group of normal adults under increased processing load conditions.

Research Design: A randomized block, repeated measures design was used to examine confrontation-naming response latency and accuracy using a computerized experimental program.

Methods And Procedures: Twenty-four adults having sustained a MTBI (aged 18-53) and 24 age-matched controls named pictures from three levels of vocabulary as quickly and accurately as possible.

Choral reading with filtered speech: effect on stuttering.

This study investigated use of choral reading with filtered components of speech and whispered speech on the frequency of stuttering. Three passages read by a normal adult male were lowpass filtered with kneepoint frequencies at 100 Hz (approximate glottal source), 500 Hz (source and first formant), and 1 kHz (source and the first two formants). Along with a whispered passage, a normal passage, and a control condition, these stimuli were used in a repeated-measures design with 12 adult stutterers as they read passages while listening to one of the stimuli.

Influence of duration and location of pauses on comprehension of a temporarily ambiguous utterance in adults.

Despite the important influence of prosody on comprehension, it remains unclear how the individual parameters of prosody contribute to the process. Therefore, this study examined the magnitude of one prosodic cue, duration of the pause, that precipitates comprehension when the pause is located either early or late in an ambiguous phrase. Adults between the ages of 20 and 40 years (men: M = 27.

Say it with me: stuttering inhibited.

This study examined fluency enhancement in people who stutter via the concomitant presentation of silently mouthed visual speech. Ten adults who stutter recited memorized text while watching another speaker silently mouth linguistically equivalent and linguistically different material. Relative to a control condition, in which no concomitant stimulus was provided, stuttering was reduced by 71% in the linguistically equivalent condition versus only 35% in the linguistically different condition.

Voluntary stuttering suppresses true stuttering: a window on the speech perception-production link.

In accord with a proposed innate link between speech perception and production (e.g., motor theory), this study provides compelling evidence for the inhibition of stuttering events in people who stutter prior to the initiation of the intended speech act, via both the perception and the production of speech gestures.

A temporal window for the central inhibition of stuttering via exogenous speech signals in adults.

We explored a possible temporal window for central stuttering inhibition via exogenously presented speech signals. Thirteen adults who stutter were asked to read while listening to a continuous vowel /a/, or a repeating 1 s vowel /a/ followed by 1, 3 and 5 s silences. In all conditions, stuttering was significantly reduced.

The influence of vocabulary age and spatial dimension on rapid picture naming in children with reading disorders.

The present study measured naming reaction times of normal and reading disordered (RD) children to a series of centrally presented picture stimuli of varying vocabulary age and spatial dimension. Results of the ANOVA on reaction times indicated significant interactions of Group x Dimension and Group x Vocabulary. Post hoc tests on the former interaction suggested that the feature of dimension differentially affected naming reaction times for the two groups.

Can within-category naming identify subtle cognitive deficits in the mild traumatic brain-injured patient?

Background: This investigation examined the effect of a speeded, computer-controlled task on detecting differences in latency and accuracy of within-category name generation in adults having sustained a mild traumatic brain injury (MTBI).

Methods: Twenty-four adults in acute recovery and 24 age-matched controls were instructed to view 72 pictures on a computer monitor, and then name another item belonging to the same category as the visual stimulus as quickly as possible.

Results: The MTBI group demonstrated significantly longer latencies (p < 0.

Self-perceptions of speech language pathologists-in-training before and after pseudostuttering experiences on the telephone.

Purpose: This survey investigated the effect of 'pseudostuttering' experiences on self-perceptions of 29 female, graduate students enrolled in a graduate seminar in stuttering while in a programme of study to become professional speech language pathologists.

Method: Perceptions of self prior to, and immediately after, participation in five scripted telephone calls that contained pseudostuttering were measured via a 25-item semantic differential scale.

Results: Participants perceived themselves as significantly more (p < 0.

Self-contained in-the-ear device to deliver altered auditory feedback: applications for stuttering.

The design and operating characteristics of the first self-contained in-the-ear device to deliver altered auditory feedback is described for applications with those who stutter. The device incorporates a microdigital signal processor core that reproduces the high fidelity of unaided listening and auditory self-monitoring while at the same time delivering altered auditory feedback. Delayed auditory feedback and frequency-altered feedback signals in combination or isolation can be generated to the user in a cosmetically appealing custom in-the-canal and completely-in-the-canal design.

Stuttering frequency on content and function words in adults who stutter: a concept revisited.

This study investigated stuttering frequency as a function of grammatical word type (i.e., content and function).

Effect of delayed auditory feedback on normal speakers at two speech rates.

This study investigated the effect of short and long auditory feedback delays at two speech rates with normal speakers. Seventeen participants spoke under delayed auditory feedback (DAF) at 0, 25, 50, and 200 ms at normal and fast rates of speech. Significantly two to three times more dysfluencies were displayed at 200 ms (p<0.

The effect of dimension and vocabulary age on rapid picture naming in children.

Unlabelled: This investigation involved measures of the reaction times of normally developing children who were asked to name a series of centrally presented picture stimuli of varying vocabulary age and dimension. Results of the ANOVA on reaction times indicated a significant main effect of vocabulary level and an interaction of Dimension x Vocabulary level for the normally developing children. Post-hoc tests showed significant differences between two- and three-dimensional pictures for higher-level vocabulary items, but not for lower-level vocabulary items.