| 1. |
- Aleksandrov, A. A., et al.
(författare)
-
ВЛИЯНИЕ НАБЛЮДЕНИЯ ЗА ДВИЖЕНИЕМ НА ВОССТАНОВЛЕНИЕ РАБОТОСПОСОБНОСТИ ПОСЛЕ ФИЗИЧЕСКОГО УТОМЛЕНИЯ [The influence of movement's observation on recuperation after physical fatigue]
- 2014
-
Ingår i: Zurnal vyssej nervnoj deâtel'nosti im. I.P. Pavlova. - 0044-4677. ; 64:5, s. 481-487
-
Tidskriftsartikel (refereegranskat)abstract
- The study aim was to investigate effects of mental activity, accompanied by mu-rhythm depression, on recuperation after physical fatigue. In a study participants performed 11 one minute bouts of static hand grip intermitted by 2 minutes rest pauses. During pauses participants watched video with either dynamic hand grips (biological movements) or deformation of geometric figure (control). Obtained data showed there was a significant depression of mu-rhythm during biological movement's observation. There was significant fatigue of subjects in an exercise with physical activity, but there was no reliable influence of performed mental activity on recovery after fatigue.
|
|
| 2. |
|
|
| 3. |
- Kulenkova, A. A., et al.
(författare)
-
Brain Bioelectrical Activity in Early Childhood Specific for Children Living in Orphanages
- 2015
-
Ingår i: Zurnal vyssej nervnoj deâtel'nosti im. I.P. Pavlova. - 0044-4677. ; 65:5, s. 607-615
-
Tidskriftsartikel (refereegranskat)abstract
- We investigated whether the electroencephalogram (EEG) during visual fixation in institutionalized children shows the altered oscillation properties. EEG was recorded in the "eyes open" situation with visual attention fixed on a cartoon in 51 2-3.5 years old children living in Simferopol orphanage, Crimea and in 53 age-matched children living in families Oscillation properties were measured using the relative power (RP) indices of theta-, alpha-, beta- and gamma-rhythms. Institutionalized children showed higher RP of alpha rhythm in seven loci (frontal polar, anterior temporal, posterior temporal and left occipital derivations), lower RP of theta rhythm in eight loci (frontal polar, frontal, anterior temporal and posterior temporal derivations). In addition, RP of beta- and gamma-rhythms were decreased in the left anterior temporal area. These results suggest that institutionalized children show impaired development of CNS, in particular development of limbic system and neocortex, probably are caused by early social deprivation.
|
|
| 4. |
|
|
| 5. |
- Stroganova, T. A., et al.
(författare)
-
THE EFFECT OF PERIODICITY AND "VOWELNESS" OF A SOUND ON CORTICAL AUDITORY RESPONSES IN CHILDREN
- 2021
-
Ingår i: Zhurnal Vysshei Nervnoi Deyatelnosti Imeni I.P. Pavlova. - 0044-4677. ; 71:4, s. 563-577
-
Tidskriftsartikel (refereegranskat)abstract
- The neural basis of speech decoding is of both fundamental and practical interest for many areas of neuroscience. The discovery of highly specialized areas of the temporal cortex, which perform acoustic analysis of vowels and the pitch of spectrally complex periodic sounds, opens the way for new directions in research on speech signal processing in healthy and diseased brain. Here, we sought to dissect the effects of periodicity and "vowelness" of a sound on the neural response of the auditory cortex in typically developing children aged 7-12 years. We hypothesized that although both of these properties are pertinent to speech vowels, their processing occurs at different levels of cortical ventral auditory stream. To test this hypothesis, we constructed a set of acoustic stimuli, manipulating their periodicity and 'vowelness' separately, and used magnetoencephalography in combination with individual brain models to assess the cortical topography and temporal dynamic of cortical sources, which respond selectively to either sounds' periodicity or to their 'vowelness'. We found that the early auditory responses (50-150 ms) were highly sensitive to both periodicity and 'vowelness' of a sound, although they were separable from each other in terms of response timing, source localization and hemispheric asymmetry. Our findings suggest that the separate neural networks are independently tuned for each of these properties of the speech sound, and that transformation of the respective acoustic properties into a speech feature take place at these earliest stages in the speech processing hierarchy. Our results may help to evaluate the role of specific neural deficits in the processing of low-level properties of speech sounds in language disorders.
|
|
