Determination of indices of the corpus callosum associated with normal aging in Japanese individuals

Takeda, Shigenori; Hirashima, Yutaka; Ikeda, Hiroaki; Yamamoto, H.; Sugino, Masahiro; Endo, Shunro

doi:10.1007/s00234-003-1019-8

Cited by 43 publications

(66 citation statements)

References 25 publications

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“…There was a statistically significant difference in the midsaggital area between right handed and left handed [14] 661±9 663±7 Kertesz et al [16] 724* 716* Clarke et al [5] 540* 550* Pujol et al [19] 577±115 582±91 Hardan et al [15] 671±100** Mostofsky et al [25] 627±73** Oka et al [18] 657±80** Laissy et al [17] 636** Suganthy et al [7] 700±84* *Sd Not Presented **No Gender Specified subjects (p=0.048). Also, there was a statistically significant difference in r3 distance between those using their right hand and those using their left hand in cleaning the blackboard (p=0.041) (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…[14,21] Several studies reported that the measurements of the anterior parts of the corpus callosum (rostrum, genu and anterior parts of the trunk) were decreased during normal aging. [7,[22][23][24][25] Takeda et al reported that the widths of rostrum, body and splenium of the corpus callosum became thinner with age. [25] Suganthy et al [7] reported that the length of the corpus callosum increased with age and regression equations for predicting age was derived from the length of the corpus callosum.…”

Section: Discussionmentioning

confidence: 99%

“…[7,[22][23][24][25] Takeda et al reported that the widths of rostrum, body and splenium of the corpus callosum became thinner with age. [25] Suganthy et al [7] reported that the length of the corpus callosum increased with age and regression equations for predicting age was derived from the length of the corpus callosum. In addition, they measured the average callosal length as 71.6±4.7 mm.…”

Section: Discussionmentioning

confidence: 99%

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Morphometric Assessment Of Corpus Callosum And Cerebral Hemispheres With Magnetic Resonance Imaging

Kocabıyık¹,

Kılıç²,

Baykal³

et al. 2009

TUTFD

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© Trakya Üniversitesi T p Fakültesi Dergisi. AVES Yay nc l k taraf ndan bas lm t r. Her hakk sakl d r. © Medical Journal of TrakyaObjective: In this study, our purpose was to assess the relationship between handedness, footedness and the morphological differences of certain intracranial structures on MR images. Material and Methods:63 healthy male and 52 healthy female individuals were included in the study. In each subject, 16 measurements of intracranial structures were taken on MR images. Area of corpus callosum, also left and right cerebral hemispheres, length of CC, width of genu (r1), truncus (r2), isthmus (r3) and splenium of CC (r4) and width of corresponding cerebral hemisphere were measured.Results: There was a statistically significant difference in R3 (width of the corresponding cerebral hemisphere to r3) distance between those using their right feet and those using their left feet. Angle of genu in right-handed people was greater in males than in females. Angle of genu in cases using the left foot was greater in females than in males for standing on one leg. Conclusion:Morphometric assessment of CC with MR imaging related to handedness and footedness may be useful in demonstrating the relationship between callosal morphology, gender differences and extremity preference in neuroscience.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Morphometric Assessment Of Corpus Callosum And Cerebral Hemispheres With Magnetic Resonance Imaging

Kocabıyık¹,

Kılıç²,

Baykal³

et al. 2009

TUTFD

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“…The greater thickness of the corpus callosum in these regions may be linked to an increased number of interhemispheric fiber connections, leading to a higher inter-hemispheric value in these areas, given the splenium is anatomically related to the parietal and occipital regions [21][22][23][24] . Studies employing new magnetic resonance techniques such as tractography, may be able to shed further light on these issues.…”

Section: Discussionmentioning

confidence: 99%

Study of interhemispheric coherence on healthy adults

Jorge

Botelho²,

Melo³

2007

Arq. Neuro-Psiquiatr.

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EEG coherence allows correlation between different brain areas to be ascertained by analyzing the mutual relationship between two EEG signals across different frequency bands. As this constitutes a normalized value for the power of a given frequency, it is independent from signal amplitude oscillations 1,2 Such a property makes coherence a relatively safe method for comparing groups of individuals in as far as differences in EEG powers do not impact estimated coherence values 3 . Reduced coherence between two regions is probably indicative of their decreased functional correlations. Ordinary coherence can be calculated between two cerebral electrodes, whether they be placed in the same hemisphere or in homologous areas, by means of a mathematical formula dividing the cross spectrum of these two channels by the product of self spectrum for each of these channels, as illustrated in the formula below:The Co value between two electrodes ranges from 0 to 1, where 1 denotes maximum correlation. When correlation is very low or null, the value approaches 0. Thus, coherence represents a measure of cortical interconnectivity. Studies concerning coherence have shown that coherence between closely-placed electrodes is determined mainly by local connections excited by intracortical interneurons (Martinotti and short axoned stellate cells), whereas between distant electrodes such coherence is determined by long axonal connections 4,5,6 . These two compartments compete with one another, influencing the same neuronal population in an alternate manner.The objective of the current investigation was to study the inter-hemispheric coherence between homologous areas in healthy individuals in the 20-50 year age bracket. METHODA total of 190 tests were carried out on individuals with no neurological complaints, where subjects were submitted to digital EEG and then assessed. Subjects had no prior history of neurological problems such as traumatic brain injury, epilepsy, alcohol or drugs use and abuse, or clinical com- ABSTRACT -The interhemispheric coherence of electroencephalogram was studied in a group of healthy individuals in the age range of 20-50 years. The results showed higher coherence for all bands in parietal regions (P3-P4). It was observed that individuals with high values of coherence for a certain frequency band in a pair of electrodes also showed high values of coherence for other bands across other pairs of electrodes. No significant influence on interhemispheric coherence was found for age, gender or hand dominance. STUDY OF INTERHEMISPHERIC COHERENCE ON HEALTHY ADULTSKEY WORDS: coherence, adults, EEG quantitative, normal pattern. Estudo da coerência interhemisférica em adultos normaisRESUMO -A coerência inter-hemisférica do eletrencefalograma foi estudada em uma população de indiví-duos normais, na faixa etária de 20 a 50 anos. Os resultados mostraram maior valor de coerência para todas as bandas nas regiões parietais(P3-P4). Foi observado que em indivíduos com alto valor de coerência para determinada banda em um det...

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“…[20] uzunluk artışına ek olarak yükseklik artışı da gözlemlemişlerdir. Bizim çalışmamızda yaş ile KK uzunluğu ve A açısı arasında pozitif korelasyon saptanmasına rağmen daha geniş serilere ihtiyaç vardır.…”

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Chiari tip I malformasyonlu hastalarda korpus kallozumun morfometrik ölçümlerinin ve uzaysal oryantasyonunun değerlendirilmesi

Özkan¹,

İnci²,

Kızıldağ³

et al. 2012

CMJ

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ÖzetAmaç. Bu çalışmada, Chiari tip I malformasyonlu hastalarda korpus kallozumun morfometrik ölçümleri ve birtakım açı ölçümleri ile tespit edilen uzaysal oryentasyonunu normal populasyona göre değerlendirmek amaçlanmıştır. Yöntem. 3-65 yaş arası 28 Chiari tip I malformasyonlu hasta (14 kadın, 14 erkek) ve 41 sağlıklı olgunun, T1 veya T2 ağırlıklı orta sagital kesitli MR görüntülerinde korpus kallozumun uzunluk, yükseklik, tepe açısı ve uzaysal oryentasyonunu belirleyen 4 farklı açı (A, B, C, D açıları) ölçümü yapıldı. Ölçümler arası farkı belirlemek için istatistiksel olarak Independent-T testi kullanıldı. Korelasyon için Pearson korelasyon testi kullanıldı. Bulgular. Her iki grup karşılaştırıldığında oryentasyon açılarından B ve D açılarında anlamlı bir fark olduğu bulundu (p<0,05). A ve C açılarında, korpus kallozumun uzunluk, yükseklik ve santral açı ölçümlerinde ise istatistiksel olarak anlamlı bir fark bulunmadı (p>0,05).Yaş ile korpus kallozumun uzunluğu ve A açısı arasında pozitif korelasyon saptandı. (sırasıyla r: 0,446 p: 0,043, r: 0,494 p: 0,023). Cinsiyet ile morfometrik ölçümler ve açılar arasında anlamlı korelasyon saptanmadı. Sonuç. Korpus kallozumun uzaysal oryentasyonu Chiari tip I malformasyonlu olgularda normal populasyona göre farklılık göstermektedir. Bu sonuçlar, korpus kallozum çalışmalarında uzaysal oryentasyonun önemli bir faktör olabileceğini göstermekle birlikte daha geniş serilere ihtiyaç vardır.Anahtar sözcükler: Chiari tip I malformasyonu, korpus kallozum, morfometrik ölçümler, uzaysal oryantasyon AbstractAim. This study aimed to determine the morphometric measurement and spatial orientation of corpus callosum in patients with Chiari type I malformation. Methods. In 28 patients with Chiari type I malformation (14 women and 14 men) and 41 healthy individuals between the ages of 3-65, length and height of corpus callosum as well as the central angle and four angles (A, B, C, D angles) to understand the spatial characteristics of the callosum were measured in T1 or T2 weighted mid-sagittal MR images. Independent-T test was used to determine the statistical differences between the measurements. Moreover Pearson's coefficient of correlation was used to determine the correlations. Results. B and D angles of corpus callosum compared between the groups, had a significant difference (p<0.001). There was no statistical difference between the length and height of corpus callosum, as well as the central angle and other two angles (A and C) for spatial characteristics of the corpus callosum (p>0.05). There was a positive correlation between the age and length of corpus callosum and A angle (r: 0.446 p: 0.043, r: 0.494 p: 0.023, respectively). There was no correlation between gender and morphometric measurements. Conclusion. These results confirm that the spatial orientation of corpus callosum is different from the normal population in cases with Chiari Type I malformation. These results suggest that spatial orientation could be an important factor in studies of the corpus callosum, however, furt...

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Determination of indices of the corpus callosum associated with normal aging in Japanese individuals

Cited by 43 publications

References 25 publications

Morphometric Assessment Of Corpus Callosum And Cerebral Hemispheres With Magnetic Resonance Imaging

Morphometric Assessment Of Corpus Callosum And Cerebral Hemispheres With Magnetic Resonance Imaging

Study of interhemispheric coherence on healthy adults

Chiari tip I malformasyonlu hastalarda korpus kallozumun morfometrik ölçümlerinin ve uzaysal oryantasyonunun değerlendirilmesi

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