Brain correlates of conditioned leg flexion behavior were studied in dogs bearing chronically implanted electrodes. Animals were trained to asymptote under either classical aversive or avoidance contingencies, and then were retrained under the other contingency; the order of training was balanced across subjects. The training groups were further subdivided into 3and .5-set CS-US intervals. Thes...

congenital myopathies are a clinically and genetically heterogeneous group of inherited muscle disorders characterized clinically by reduced fetal movements, hypotonia, weakness and developmental delay beginning at birth or in the first year of life. however, there can be a wide variation in clinical findings including mild and asymptomatic presentation to a severe form within each subtype with...

professional firefighting is among the most demanding jobs. prior studies have showed the notable prevalence of poor sleep quality among professional firefighters that may result in catastrophes. the aim of this study was in field confirmation of zolpidem usage (10 mg/po/bed time) for short term management of poor sleeps quality among professional firefighters. in a double-blind, randomized, pl...

This study characterized patterns of brain electrical activity associated with selective attention to the color of a stimulus. Multichannel recordings of event-related potentials (ERPs) were obtained while subjects viewed randomized sequences of checkerboards consisting of isoluminant red or blue checks superimposed on a grey background. Stimuli were presented foveally at a rapid rate, and subj...

background : despite the high incidence and prevalence of cts, there is no exclusive data about normal values increment of motor and sensory distal latencies of median nerve at wrist according to age. this research was done in electrodiagnosis lab of physical medicine & rehabilitation ward in nemazi hospital in shiraz between 1374-1379. material and methods : this study was performed on 1200 ca...

It has previously been observed that spontaneous contractions start in a region of damage of isolated right ventricular trabeculae of rat, propagate along the muscle, and induce triggered arrhythmias (Mulder, B.J.M., P.P. de Tombe, and H.E.D.J. ter Keurs. 1989. J. Gen. Physiol. 93:943-961). The present study was designed to analyze the mechanisms that lead to triggered propagated contractions (...

This study examined the effects of regular practice of Tai Chi and jogging on neuromuscular reaction indicated by muscle latency of the trunk and lower limb muscles on the unperturbated side in older people during lateral postural perturbation. A total of 42 people aged 65 or older participated in this study, and formed Tai Chi group, jogging group, and sedentary control group based on their ex...

Objective: Voice onset time (VOT) is an important parameter of speech that denotes the time interval between consonant onset and the onset of low frequency periodicity generated. In this study we examined the temporal encoding of voice onset time in the cortical auditory evoked response (CAEP) of young children. Methods: Scalp recoded CAEP were measured in 18 children aged from 5-8 participated...

This study deals with the effect of stimulus contrast, between 1.3% and 96%, on the visual evoked potentials (VEPs) for onset of motion and for pattern reversal of checkerboard stimuli. The VEPs for pattern reversal and for the onset of motion both contain an initial positive peak (P1; peak latency about 120 msec) followed by a later negative peak (N2; peak latency 160-200 msec). However the P1...