Stimulus time dependence of cerebral blood flow response to photic stimulation

Y. Kuwabara; Y. Ichiya; M. Otsuka; M. Sasaki; Y. Akashi; T. Yoshida; T. Fukumura; K. Masuda; A. Ichimiya

Stimulus time dependence of cerebral blood flow response to photic stimulation

Y. Kuwabara, Y. Ichiya, M. Otsuka, M. Sasaki, Y. Akashi, T. Yoshida, T. Fukumura, K. Masuda, A. Ichimiya

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Abstract

The time dependency of rCBF response to photic stimulation in the primary visual cortices was studied using H₂¹⁵O bolus-injection and PET. The subjects consisted of 5 normal volunteers aged from 25 to 40 years old. Their regional CBF was measured at 2 min and 7 min after the start of photic stimulation (frequency, 10 Hz). The percentage increases of rCBF were 19.6±7.9% (mean ± SD, range: 8.9-27.6%) in the primary visual cortex on the left side and 23.2±13.6% (2.5-35.8%) on the right side at 2 min, respectively, while, in comparison, they were 25.3±20.0% (1.8-49.7%) on the left side and 25.3±16.4% (3.5-44.5%) on the right side at 7 min, respectively. No significant difference was found in the rCBF responses between at 2 min and 7 min. Therefore, the taming effect does not need to be considered when carrying out a photic stimulation study.

Original language	English
Pages (from-to)	1491-1495
Number of pages	5
Journal	Kakuigaku
Volume	30
Issue number	12
Publication status	Published - Dec 1 1993

All Science Journal Classification (ASJC) codes

Radiology Nuclear Medicine and imaging

Cite this

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title = "Stimulus time dependence of cerebral blood flow response to photic stimulation",

abstract = "The time dependency of rCBF response to photic stimulation in the primary visual cortices was studied using H215O bolus-injection and PET. The subjects consisted of 5 normal volunteers aged from 25 to 40 years old. Their regional CBF was measured at 2 min and 7 min after the start of photic stimulation (frequency, 10 Hz). The percentage increases of rCBF were 19.6±7.9% (mean ± SD, range: 8.9-27.6%) in the primary visual cortex on the left side and 23.2±13.6% (2.5-35.8%) on the right side at 2 min, respectively, while, in comparison, they were 25.3±20.0% (1.8-49.7%) on the left side and 25.3±16.4% (3.5-44.5%) on the right side at 7 min, respectively. No significant difference was found in the rCBF responses between at 2 min and 7 min. Therefore, the taming effect does not need to be considered when carrying out a photic stimulation study.",

author = "Y. Kuwabara and Y. Ichiya and M. Otsuka and M. Sasaki and Y. Akashi and T. Yoshida and T. Fukumura and K. Masuda and A. Ichimiya",

year = "1993",

month = dec,

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language = "English",

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TY - JOUR

T1 - Stimulus time dependence of cerebral blood flow response to photic stimulation

AU - Kuwabara, Y.

AU - Ichiya, Y.

AU - Otsuka, M.

AU - Sasaki, M.

AU - Akashi, Y.

AU - Yoshida, T.

AU - Fukumura, T.

AU - Masuda, K.

AU - Ichimiya, A.

PY - 1993/12/1

Y1 - 1993/12/1

N2 - The time dependency of rCBF response to photic stimulation in the primary visual cortices was studied using H215O bolus-injection and PET. The subjects consisted of 5 normal volunteers aged from 25 to 40 years old. Their regional CBF was measured at 2 min and 7 min after the start of photic stimulation (frequency, 10 Hz). The percentage increases of rCBF were 19.6±7.9% (mean ± SD, range: 8.9-27.6%) in the primary visual cortex on the left side and 23.2±13.6% (2.5-35.8%) on the right side at 2 min, respectively, while, in comparison, they were 25.3±20.0% (1.8-49.7%) on the left side and 25.3±16.4% (3.5-44.5%) on the right side at 7 min, respectively. No significant difference was found in the rCBF responses between at 2 min and 7 min. Therefore, the taming effect does not need to be considered when carrying out a photic stimulation study.

AB - The time dependency of rCBF response to photic stimulation in the primary visual cortices was studied using H215O bolus-injection and PET. The subjects consisted of 5 normal volunteers aged from 25 to 40 years old. Their regional CBF was measured at 2 min and 7 min after the start of photic stimulation (frequency, 10 Hz). The percentage increases of rCBF were 19.6±7.9% (mean ± SD, range: 8.9-27.6%) in the primary visual cortex on the left side and 23.2±13.6% (2.5-35.8%) on the right side at 2 min, respectively, while, in comparison, they were 25.3±20.0% (1.8-49.7%) on the left side and 25.3±16.4% (3.5-44.5%) on the right side at 7 min, respectively. No significant difference was found in the rCBF responses between at 2 min and 7 min. Therefore, the taming effect does not need to be considered when carrying out a photic stimulation study.

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Stimulus time dependence of cerebral blood flow response to photic stimulation

Abstract

All Science Journal Classification (ASJC) codes

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