■ ABSTRACT: This study aimed at investigating children’s perceptual auditory performance in identifying phonemic contrast in Brazilian Portuguese (henceforth BP). The hypothesis is that the perceptual auditory acquisition develops in a gradual fashion, following a systematic acquisition order. We performed four identification tasks using the instrument PerceFAL with 66 children (of both genders...

The force needed to press the key in a simple reaction time task was measured as a function of stimulus intensity for visual and auditory stimuli in three experiments using a total 45 male and female human subjects. Intensity ranged from 0.316 to 1995 cd/m2 for visual stimuli and from ranged from 47 to 102 dB for auditory stimuli. We found, in agreement with Angel's (1973) original study, that ...

In two experiments, saccadic eye movements were investigated in a bimodal focused attention task with visual targets and auditory distractors under various spatial and temporal conditions. Different spatial effects on saccadic reaction time could be observed depending on whether the auditory distractor preceded or followed the visual target. While vertical interstimulus distance affected reacti...

Long latency auditory brain potentials were recorded while subjects listened to bi-syllabic words spoken with an emotional expression and concurrently viewed congruent or incongruent facial expressions. Analysis of the auditory waveforms suggests the existence of a positive deflection around 240 ms post-stimulus with a clear posterior topography (the P2b component). This potential is subsequent...

A probe reaction-time paradigm was used to investigate the capacity demands of planning rapid aiming movements. Subjects were required to respond either vocally or manually to an auditory probe presented during the reaction-time interval preceding a pointing response. When a vocal response was required probe reaction time increased systematically with the complexity of the pointing movements. P...

objective: effect of peppermint on exercise performance was previously investigated but equivocal findings exist. this study aimed to investigate the effects of peppermint ingestion on the physiological parameters and exercise performance after 5 min and 1 h. materials and methods: thirty healthy male university students were randomly divided into experimental (n=15) and control (n=15) groups. ...

background: bromide is found naturally in groundwater and surface water. the rapid growth of industrial activities, drainage of surface runoff, and use of methyl bromide in pesticides has increased bromide discharge to the environment. disinfection of water-containing bromide causes the creation of additional products of organo-halogenated that are considered cancer-causing agents. in this stud...

Event-related potentials and reaction time measures to auditory discrimination tasks of graded difficulty were used to separate cognitive from motor processing time in 27 patients with newly diagnosed, previously untreated Parkinson's disease and later on optimal levodopa treatment. Before treatment event-related potential P3 and task performance were normal but the reaction time was prolonged ...

The activity of single units at various locations in the central auditory pathway of rhesus macaques was recorded during the monkeys' performance and nonperformance in an auditory reaction time task. Evoked unit responses during performance were compared with those observed during passive delivery of identical stimuli. Single units were recorded from the cochlear nucleus, superior olivary compl...