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NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS
Official Journal of the Bulgarian Society of Neurosonology and Cerebral Hemodynamics
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Search Results for “search_doc_txt.php” – NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS
Search in texts for 'premotor cortex' - Neurosonology.net'
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texts with exact phrase : '
premotor cortex
'.
1.
NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS, vol. 2, 2006, No. 1
,
,
,
The specific areas with an increase in perfusion in the affected hemisphere were in the precentral gyrus,
premotor
cortex
(Brodmann’s area 6 (BA6), frontal
cortex
, and superior frontal gyrus (BA10).
This two-week long intensive rehabilitation program was given to chronic stroke patients (mean time since the onset of stroke 36 months). These twelve chronic stroke patients were studied with single-photon emission computerized tomography at rest before and after the two-week rehabilitation period. Increased perfusion was found in motor control related areas after the program. For analysis, data of those patients whose affected hemisphere was the left one, were mirrored. After mirroring, all lesions were in the same hemisphere and they could be realigned into the same position and analyzed.
The specific areas with an increase in perfusion in the affected hemisphere were in the precentral gyrus, premotor cortex (Brodmann’s area 6 (BA6), frontal cortex, and superior frontal gyrus (BA10).
In the nonaffected hemisphere, perfusion was increased in the superior frontal gyrus (BA6) and cingulate gyrus (BA31). In the cerebellum increased perfusion was seen bilaterally. The brain areas with increased perfusion are known to receive and integrate the information from different sensory systems and plan the movement execution. The motor behavior of the affected hand of these patients improved significantly after the two weeks of therapy. Additionally, regional cerebral perfusion decreased in the lingual gyrus (BA18) in the affected hemisphere.
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2.
NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS, vol. 3, 2007, No. 1
,
,
,
Reorganization of the human ipsilesional
premotor
cortex
after stroke.
Fridman EA, Hanakawa T, Chung M, Hummel F, Leiguarda RC, Cohen LG.
Reorganization of the human ipsilesional premotor cortex after stroke.
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3.
NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS, vol. 3, 2007, No. 2
,
,
,
hemiparesis
premotor
cortex
, transcranial magnetic stimulation
hemiparesis premotor cortex, transcranial magnetic stimulation
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In some patients the normal reactivity to TMS in the four limbs at the same time, when stimulating
premotor
cortex
(CF CF
In primary motor cortex involvement the responses have been lacking or elicited by higher intensity.
In some patients the normal reactivity to TMS in the four limbs at the same time, when stimulating premotor cortex (CF CF
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The stimulation over the healthy hemisphere
premotor
cortex
shows on the contrary
The stimulation over the healthy hemisphere premotor cortex shows on the contrary
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The application of TMS offers a possibility to test the primary motor, and the
premotor
cortex
responses in patients with post-stroke hemiparesis.
The application of TMS offers a possibility to test the primary motor, and the premotor cortex responses in patients with post-stroke hemiparesis.
The new method of MT comparement in four limbs is a functional test, giving information for the status, and respectively the prognosis of such patients as far as the premotor area is involved in mass movements, synergies, and in pathology – in releasing phenomena, like spasticity, clonus and pathologic static synergy and gate of WernickeMann type.
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Tyvaert L, Cassim F, Devanne H et al.(изписват се всички автори) Subthreshold lowfrequency r TMS over the
premotor
cortex
and sensimotor integration in patients with Writter’s cramp.
Tyvaert L, Cassim F, Devanne H et al.(изписват се всички автори) Subthreshold lowfrequency r TMS over the premotor cortex and sensimotor integration in patients with Writter’s cramp.
Congress Amer Assoc Neural, P03, 198. Neurology 2006, March (suppl 2), A 179.
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4.
NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS, vol. 4, 2008, No. 2
,
,
,
Premotor
Cortex
Transcranial Magnetic Stimulation Motor Thresholds in Focal Secondary Generalized Epilepsy
Premotor Cortex Transcranial Magnetic Stimulation Motor Thresholds in Focal Secondary Generalized Epilepsy
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Premotor
Cortex
Transcranial Magnetic Stimulation Motor Thresholds in Focal Secondary Generalized Epilepsy
Premotor Cortex Transcranial Magnetic Stimulation Motor Thresholds in Focal Secondary Generalized Epilepsy
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premotor
cortex
, secondary generalized epilepsy,
premotor cortex, secondary generalized epilepsy,
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The found threshold values in patients with epilepsy have shown typical distribution in
premotor
cortex
stimulation, especially of the focus side, where the MT is lower.
The found threshold values in patients with epilepsy have shown typical distribution in premotor cortex stimulation, especially of the focus side, where the MT is lower.
The contraction in arms and legs, ipsiand contralateraly resulted in similar or even identical intensity, respectivetly thresholds.
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The
premotor
cortex
in secondary generalized epilepsy shows a higher excitability.
The premotor cortex in secondary generalized epilepsy shows a higher excitability.
This can be used for testing the excitability in epilepsy and as an indicator of epileptic focus side.
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Transcortical magnetic stimulation on
premotor
cortex
– pathway for reorganization of motor functions
Transcortical magnetic stimulation on premotor cortex – pathway for reorganization of motor functions
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5.
NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS, vol. 4, 2008, No. 2
,
,
,
Gozmanov from the Clinic of Neurology of the Military Medical Academy, Plovdiv in TMS and the use of MT in the functional characteristics of motor and
premotor
cortex
.
University from Plovdiv – TMS in neurophysiology and reeducation; in the last two years with Assoc. Prof. G.
Gozmanov from the Clinic of Neurology of the Military Medical Academy, Plovdiv in TMS and the use of MT in the functional characteristics of motor and premotor cortex.
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6.
NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS, vol. 7, 2011, No. 1
,
,
,
Somatotopic representation of action words in human motor and
premotor
cortex
.
Hauk O, Johnsrude I, Pulvermuller F.
Somatotopic representation of action words in human motor and premotor cortex.
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7.
NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS, vol. 10, 2014, No. 2
,
,
,
Ventral
premotor
cortex
and base of parietal lobe are cortical areas belonging to mirror neuron system [18].
final goal. Neurological rehabilitation must focus on expediency of the movement. This makes familiarizing with patient’s habits before stroke very important. Most complex movements that we perform, we were first observing during childhood. It is helpful to repeat these movements during rehabilitation process.
Ventral premotor cortex and base of parietal lobe are cortical areas belonging to mirror neuron system [18].
These areas have shown to be great neuroanatomical target areas for rehabilitation exercises. The goal is to reach their activation through any connected healthy part of the cortical network. The mirror neuron system will activate differently in every person, depending on individual’s level of practice of specific movement. For example, if a patient played a guitar and danced tango prior to stroke, the observation of these activities itself will strongly activate his mirror neurons, which leads to stimulation of larger network area and reconnection of large number of synapses.
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8.
NEUROSONOLOGY AND CEREBRAL HEMODYNAMICS, vol. 14, 2018, No. 1
,
,
,
They revealed that some neurons in the ventral
premotor
cortex
are active both
In 1992, the Italian neuroscientist Rizzolatti and his team first recorded the mirror activity of brain neurons in primates by means of implanted electrodes.
They revealed that some neurons in the ventral premotor cortex are active both
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Numerous studies have shown that mirror neurons are found throughout the cerebral
cortex
of humans they are predominantly located in the frontal (ventral
premotor
cortex
) and parietal lobe [33].
during performing and observing an action [31]. It has been proved later that mirror neurons can also be activated by well-known specific sounds, associated with a certain movement, for example, tearing a sheet of paper [22].
Numerous studies have shown that mirror neurons are found throughout the cerebral cortex of humans they are predominantly located in the frontal (ventral premotor cortex) and parietal lobe [33].
Because of their widespread distribution, the network of these neurons is called “Mirror Neuron System” (MNS). According to some scientists it is more developed in women [7].
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Action recognition in the
premotor
cortex
.
Gallese V, Fadiga L, Fogassi L, Rizzolatti G.
Action recognition in the premotor cortex.
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