"Functional
interhemispheric asymmetry of the brain in dynamics of bimanual activity
in children 7-11 years old during origami training"
Ph.D. thesis by Katrin
and Yuri Shumakov
Contents:
Introduction
Generalizing Literary Sources
Purpose, Subject, and Object
Hypotheses
Preconditions
Methods
Scientific Novelty
Summary
Conclusions and Recommendations
Here
are some fragments from the Ph.D. thesis:
Functional interhemispheric asymmetry of the brain in dynamics of bimanual
activity in children 7-11 years old during origami training, Publishing
house of the Rostov State University, 2000, 186 pp.

Introduction
The
all-round development of children is one of the major social tasks, which
excites all civilized societies, because children are our future. Parents,
teachers, psychologists, doctors and everyone want that children should
be healthy, clever and creative.
The
development of representations about the character of distinctions and
features of interaction of the brain's hemispheres has fundamental meaning
for understanding of mechanisms of the brain's control of psychical processes.
For the last several decades, the problem of functional interhemispheric
asymmetry of the brain became one of the central areas of study in psychology
and adjacent disciplines.
Origins and the development of functional interhemispheric asymmetry of
the brain in ontogenesis was of great interest to scientists (M. Annett,
1985; I.C. McManus, 1985; M.C. Corballis, 1998; L.F. Saugstad, 1998).
A quote by the authors also specifies influence in the development of
functional interhemispheric asymmetry on learning efficiency and presence
of certain dynamics of functional interhemispheric asymmetry during training,
including motor skills (P.N. Ermakov, 1988; R. Kawashima, 1994; U. Tan,
1993; M. Iacoboni, 1998), mark connection of interhemispheric specialization
with creativeness (J.E. Bogen, G.M. Bogen, 1988; K.D.Hoppe, 1988; J. Levy,
1995; I.Carlsson, 2000).
CONTENTS

Generalizing Literary Sources
Generalizing
the literary sources allows noting that bimanual sensory-motor functions
develop more slowly in comparison with similar unimanual, that is evidence
of a big role of ripening interhemispheric communications.
The
psychomotor development of children is closely connected to development
of cognitive abilities. The perfection of motor function of the hand is
the development of more and more fine and precise movements of the hands
and also development of conditional-reflex movements with the diverse
participation of fingers and palms. It involves the analysis and synthesis
of activity of the brain of the child. Experimental data submitted in
recent literature convincingly shows that the training of the fingers
of a baby accelerates the process of the functional maturing of the brain.
The degree of development of fine movements of the hands is correlated
with the level of development of speech in children.
Analysis of the structural and functional features of motor function demonstrate
that the motor system has extremely rich communication coinciding with
all structures of the central nervous system and take part in their activity.
Analysis of the impulses of the motor functions are integrated with pulses
from other systems of the analysis in a uniform image, in primary, secondary,
and later in tertiary associative zones of the cortex of the brain. The
essence of integration of motor impulses is that they promote activation
of associative zones. In the development of any movements, which represent
a result of interaction of various structures of the brain, the frontal
parts play a dominant role. Told gives a reason to assume that the motor
analyzer has a special value in development of activity of the brain.
At
early stages of development of the child, both hands work together and
the movements are bilateral. At about 18 months of age one hand becomes
more passive in comparison with another. There is a problem of handedness,
and the training of one of the hands considerably influences the further
cerebral lateralization. In the process of development and perfection
the function of one of the hands in an opposing hemisphere, it receives
an increasing quantity of pulses. That hemisphere, which receives more
pulses, becomes dominant. The training of movements of fingers of both
hands really is a basis for bilateral development of the brain and advances
intellectual development. The certain degree of a bilateralization can
provide the large flexibility of cognitive processes.
The
plasticity of a child's brain and minimal domination of one hemisphere
above another in childhood is very favorable ground for development of
both halves of the brain, for development of strategy of interaction of
both hemispheres revealing abilities of the right and left hemispheres.
It is known that the ability of logical thinking, number skills, reading,
reasoning, speech, and scientific ability is connected to activity of
the left hemisphere. Functions of the right hemisphere - insight, three-dimensional
perception (recognition), sensitivity to art, imagination, musical and
art abilities. Activation and revealing abilities of the right and left
hemispheres in childhood (when the brain has its greatest plasticity)
will aid the child's mental development, more fully using mental resources.
The
age of 7-11 years is the most intensive period in development of bimanual
coordination. This period is characterized sensitivity for development
of such motor qualities as the speed, accuracy and flexibility of movements'
coordination. Successful bimanual learning and the realization of bimanual
activity is connected to active work of both hemispheres of a head brain
and their close interaction: activation of numerous cortical areas of
the left and right hemispheres, activation of sensory-motor zones and
additional motor areas, calloused and noncalloused commisures.
In
the period of the most intensive development of bimanual coordination,
in 7-11 years old bimanual learning can become a good background for development
of psychomotor abilities of both hands. At the same time, the given stage
ontogenesis is described as time of the further formation of functional
bi-hemispheric organization of a brain, specialization of cortical zones
and increase of an opportunity of their interaction and high plasticity
of brain organization.
A
priority of interhemispheric interaction in successful cognitive activity
also is shown at many researches. There is revealed, that for the decision
of creative tasks it is characteristic not only high activity of the right
creative hemisphere, but also strong interaction of cortical structures
of the right (creative) and left (logical) hemispheres.
Thus,
the creation of conditions of intensive interaction of hemispheres by
means of asymmetrical bimanual activity must be reflected on success of
cognitive and creative activity. The younger school age is sated the most
of a game and motor activity, is sensitive for formation of ability to
purposeful activity, for development of creative abilities. It is the
enough important period, which in many aspects will determined the further
development of the man. At the same time, in primary school there is the
sharp shortage of organization of timely development of creativeness,
logical thinking, assiduity, exactness, succession and diligence.
Origami as asymmetrical bimanual activity and the visual-spatial activity
with a high emotional and productive orientation represents a good basis
of a psychomotor training for increase of interhemispheric interaction
and development psychomotor, intellectual and creative abilities.
Thus,
functional interhemispheric asymmetry, psychomotor, intellectual and creative
parameters in dynamics of bimanual activity at children of 7-11 years
old during the origami training were not a subject of special researches
till now. While the preconditions revealed in the analyzed literature
allow making this theme by a subject of special research.
CONTENTS

Purpose, Object, and Subject
The
purpose of the research is the study of functional interhemispheric asymmetry
during dynamics of bimanual activity at children 7-11 years old during
mastering of basis origami techniques.
The
object of the research is functional interhemispheric asymmetry and psychomotor,
intellectual and creative parameters at children 7-11 years old during
dynamics of bimanual activity in origami training.
The
subject of the research is children 7-11 years, pupils of the Rostov comprehensive
schools who were taking an intensive origami course during a week vacation
in the absence of other educational subjects (25 hours: everyday 5 educational
hours for 5 days). None of them had origami skills prior to the beginning
of the research. Children were divided into 4 age groups: 7-8 years (1st
grade), 8-9 years (2nd grade), 9-10 years (3rd grade) and 10-11 years
(5th grade). In total 137 children participated in the research, from
which there are 67 boys and 70 girls.
CONTENTS

Hypotheses
1.
The origami training stimulating high motor activity with simultaneous
use of the right and left hands will render different influences on the
activity of the brain's hemispheres of children from different sex-age
groups.
2.
The motor skills of both hands and their asymmetry will change during
dynamics of training with respect to the real cerebral lateralization
type of children.
3.
The asymmetrical bimanual activity during origami training influences
the individual - psychological features of children of different sexual-age
groups. The prevalence of the left hemisphere is reflected in verbal abilities
(speed of verbal thinking), and prevalence right hemisphere is reflected
on nonverbal abilities (nonverbal intelligence, spatial imagination).
4.
The asymmetrical bimanual activity during origami training will affect
the creativity of children of different age groups and will stimulate
development of creativeness.
The
purpose and the hypotheses of the research have defined the concrete tasks:
1.
To study the parameters of functional interhemispheric asymmetry in children
7-11 years old in the dynamics of bimanual activity during origami training.
2.
To investigate the maximal rate of movement of hands and ability to judge
by eye during the dynamics of origami training in children with a different
type of cerebral lateralization.
3.
To study the characteristics of verbal thinking during dynamics of the
training of origami and their specificity for children with a different
type of cerebral lateralization.
4.
To study nonverbal intelligence during dynamics of the origami training
in children of various age groups with a different individual structure
of cerebral lateralization.
5.
To investigate sexual - age features of spatial imagination during dynamics
of the training of origami in children with a different individual structure
of cerebral lateralization.
6.
To study the characteristics of creativeness and imagination during dynamics
of the training of origami in children with a different individual structure
of cerebral lateralization.
7.
To study the degree of development of bimanual motor actions in children
7-11 years old that result in the mastering of origami, and also to correlate
this degree to psycho-physiological and psychological features of children.
CONTENTS

Preconditions
The
methodological and theoretical preconditions of the research:
-
rules about the system approach to the analysis of brain mechanisms of
mental functions (Luria A.R.);
-
situation that functional interhemispheric asymmetry as the fundamental
law of work of a brain determines the characteristics of mental condition,
feature of activity, including at training (A.R. Luria, E.G. Simernitchkaya,
E.D. Homskaya, D.A. Faber, B.S. Kotik, P.N. Ermakov etc.);
-
concept about multilevel system of construction of movements (N.A. Bershtein);
-
representations about the sensitive periods in development of bimanual
coordination (P.H. Wolff, D.A.Faber etc.);
-
representations that the performance of asymmetrical bimanual actions
is accompanied by higher interhemispheric interaction, than performance
of unimanual actions (A.R.Luria, J.Brinkman, G.W.Goerres, L.Jancke);
-
representations about dynamics of mutual interhemispheric relation at
different stages of formation of motor skill (F.G.Andres, S.P.Swinnen,
P.N. Ermakov etc.);
-
regulations about high plasticity of brain organization in early ontogenesis
(A.R. Luria, E.G. Simernitchkaya, D.A. Faber etc.);
-
representation about the sensitive periods of younger school age for formation
of ability to long purposeful activity and for development of creative
potential (J. Piaget, A. Wallon, S.W. Russ etc.);
-
representations about importance of interhemispheric integration for successful
cognitive activity (M.P. Bryden, B.S. Kotik, D.A. Faber, R.Cabeza, L.Nyberg
etc.);
-
representations about connection of interhemispheric specialization with
creativeness (J.E.Bogen, G.M. Bogen, K.D. Hoppe, J. Levy etc.).
CONTENTS

Methods
The
research was carried out in four stages: first, third and fourth were
psycho-diagnostic testings, second was forming experiment consisting in
intensive training of children to origami skills. The average interaction
with one child was lasted about 30 hours.
In
research were applied the hardware techniques (study Skin-Galvanic Reaction
of the right and left hand, gaploscopia), test techniques (test on definition
of an individual structure of functional interhemispheric asymmetry, tapping-test
of E.P. Ilyayn, test of E.P. Torrance " Choice of the side",
Raven progressive matrixes, "Interpretation of pictures" test
by J. Guilford, "Addition of figure" test by Barron, test for
definition of ability to judge by eye) and expert estimation of development
of the origami program and level of display of creative abilities in origami,
made by the teacher and independent expert - origami teacher.
The
reliability of the received results was provided with a variety of diagnostic
procedures, amount of children, the processing of the received data was
carried out by standard mathematical methods.
.CONTENTS

Scientific Novelty
1.
Parameters of functional interhemispheric asymmetry in dynamics of asymmetrical
bimanual activity at children 7-11 years old during the origami training
were investigated for the first time.
2.
Features of interhemispheric organization at children most successfully
mastering origami were revealed for the first time.
3.
The characteristics of nonverbal intelligence, verbal thinking and creativeness
were investigated in dynamics of asymmetrical bimanual activity at the
origami training for the first time.
4.
For the first time was experimentally proved that the origami training
based on asymmetrical bimanual activity creates conditions of intensive
interaction of hemispheres and allows effectively to develop motor abilities
of both hands, intellectual and creative abilities at children 7-11 years.
CONTENTS

Summary
1.
According to the results of the research, we have established that the
training of origami basing on asymmetrical bimanual activity causes intensive
interaction of brain hemispheres and allows effectively developing motor,
intellectual and creative abilities at children 7-11 years old.
2.
We have found that the parameters of brain asymmetry varied during the
all week training that can specify amplification of interhemispheric interaction.
However, the most significant changes of parameters of brain asymmetry
occurred in the middle of the training, it can be caused by specificity
of gaining of bimanual skill. After the training, in the 7-8 years old
children group for the girls was noticed general growth of parameters
of right asymmetry, for the boys was observed growth of parameters of
left asymmetry; in the other groups of 8-9, 9-10 and 10-11 years old the
tendency was contrary.
3.
The motor activity of both hands was developed in dynamics of the origami
training at children 7-11 years, and, its greatest development was marked
in the middle of the training. With age the development of motor activity
of the right hand was increased, and for left hand was decreased. The
boys since 8-9 years old surpassed the girls in unimanual actions of the
right and left hands, whereas the characteristics of movement of the left
hand up to the origami training were higher at the girls of all age groups.
In the younger group of children 7-8 years old was observed increase of
right asymmetry of motor activity of hands, in other age groups the asymmetry
grew basically in a direction of the left hemisphere.
We have observed that in the motor skills of the right and left hands
at the girls there is the tendency to the lower parameters of asymmetry
than at the boys. Bimanual learning appears by most successful at 8-9-
years old children. The girls of 7-11 years old had the best high-speed
and precise characteristics of bimanual coordination, independently of
a level of origami mastering.
4.
The results have revealed close interrelation of development of motor
activity of both hands at the origami training with development of intellectual
and creative abilities in children 7-11 years old at the same time. Successful
bimanual learning correlates with the greatest increase of nonverbal and
verbal abilities. The interrelation of the bimanual learning and nonverbal
intelligence is revealed: the high parameters of nonverbal intelligence
positively correlate with the progressive assimilation of the origami
program in the period 7-10 years old.
Since
9-10 years, good bimanual learning is connected to growth of figurativeness
and dimensions of imagination. We report that nonverbal intelligence,
spatial imagination, an ability to judge by eye, nonverbal and verbal
creativeness, verbal thinking are improved considerably during the intensive
origami training in all age groups.
The
results indicated the sexual and age differences in dynamics of activity
of hemispheres during the origami training. In age groups 7-8 and 8-9
years at the girls the greater growth of parameters of the nonverbal characteristics
was found, and at the boys the greater growth of the verbal characteristics
is noticed; at 9-10 and 10-11 years old the tendency varies contrary.
The groups of 7-8 and 9-10 years age were characterized by the greatest
activity of the right and left hemispheres, by high development of spatial
imagination, by simultaneous display of verbal and nonverbal creativeness.
The same ages groups showedthe prevailing of the right-brain strategy
of thinking (more creative) at the boys and left-brain strategy of thinking
(more logical) at the girls. In age groups of 8-9 and 10-11 years, the
boys showed the increase of left-brain strategy of thinking, and the girls
showed the right-brain strategy and the combined strategy of thinking.
It is interesting that two average groups of children 8-9 and 9-10 years
old are characterized by the greatest development of motor, intellectual
and creative abilities.
5.
According to the received data, the parameters of brain asymmetry in dynamics
of purposeful bimanual activity at the origami training are interconnected
to individual - psychological features of children 7-11 years. The prevalence
of the left hemisphere is reflected in increasing of verbal abilities
(the parameter of speed of thinking), and the prevalence of the right
hemisphere is reflected on increasing nonverbal abilities (the parameters
of nonverbal intelligence, spatial imagination, and nonverbal creativeness).
6.
The findings showed that among investigated children 7-11 years old were
prevailed children with right-hand preference and mixed lateralization
of sensory-motor attributes. The girls prevailed among right-hand children
in all age groups. Among left-hand children there were more boys. Perhaps
one of the most dramatic finding was a reduction of preference of the
left hand in household operations in process of growing up, and at the
same time was noticed the increase right-hand preference in aggregate
of sensory-motor attributes. So, lesser use of the left hand will send
the lesser quantity of impulses to the right hemisphere.
7.
The findings suggest that children with the mixed lateralization of sensory-motor
attributes showed the most successful bimanual coordination and good origami
doing. This fact can be connected to the wide interaction of both hemispheres
at people with the mixed lateralization. Children with this lateralization
also showed the best nonverbal intelligence, spatial imagination, and
creative abilities in verbal and nonverbal spheres.
|

Left hemisphere's functions are made active:
Right-hand
control
Spoken
language
Written
language
Number
skills
Reasoning
Scientific
skills |
 |

Right hemisphere's functions are made active:
Left-hand
control
Insight
3-D
forms
Imagination
Art
awareness
Music
awareness |
CONTENTS

Conclusions and Recommendations
Our
findings allow recommending the origami training for practical using for
development of motor, intellectual and creative abilities of children,
and also for practical using at realization of psycho-therapeutic and
psycho-correctional works with the young schoolboys.
Successful
mastering of origami as the indicator of good bimanual coordination can
be one of attributes of good interhemispheric interaction. The origami-test
revealing ability of the child to repeat step by step folding of simple
model can be used by the psychologists as a component in an estimation
of interhemispheric interaction.
Dynamics
of activity of hemispheres was investigated at bimanual activity during
origami learning. For the first time was experimentally proved that the
origami training based on asymmetrical bimanual activity creates conditions
of intensive interaction of hemispheres and allows effectively to develop
motor abilities of both hands, intellectual and creative abilities at
children 7-11 years.
The
received new experimental data can find application in scientific psychological,
psychophysiological and pedagogical researches, in methodical work, and
also in practical work of the psychologists, physiologist, educators,
and physician, those who are not indifferent to development of children.
Thus, the results of the carried out research confirm the put forward
hypotheses and open new prospects in study of the given problem.
CONTENTS
* * *
Above
are the fragments from the Ph.D. thesis:
Shumakova E.R. Functional interhemispheric asymmetry of a brain in dynamics of bimanual
activity at children 7-11 years old at origami training, Publishing house
of the Rostov State University, 2000, 186 pp.
(note Shumakova E.R. is Katrin Shumakov) |