blood flow pattern under psychological stress
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Aisha
Active In SP
**

Posts: 1
Joined: Feb 2010
#1
07-02-2010, 11:58 PM


i need complete details about blood flow pattern under psychological stress topic.
Reply
seminar surveyer
Active In SP
**

Posts: 3,541
Joined: Sep 2010
#2
24-09-2010, 01:07 PM

Abstract

Despite the prevalence of stress in everyday life and its impact on happiness, health, and cognition, little is known about the neural substrate of the experience of everyday stress in humans. We use a quantitative and noninvasive neuroimaging technique, arterial spin-labeling perfusion MRI, to measure cerebral blood flow (CBF) changes associated with mild to moderate stress induced by a mental arithmetic task with performance monitoring. Elicitation of stress was verified by self-report of stress and emotional state and measures of heart rate and salivary-cortisol level. The change in CBF induced by the stress task was positively correlated with subjective stress rating in the ventral right prefrontal cortex (RPFC) and left insula/putamen area. The ventral RPFC along with right insula/putamen and anterior cingulate showed sustained activation after task completion in subjects reporting a high stress level during arithmetic tasks. Additionally, variations of baseline CBF in the ventral RPFC and right orbitofrontal cortex were found to correlate with changes in salivary-cortisol level and heart rate caused by undergoing stress tasks. We further demonstrated that the observed right prefrontal activation could not be attributed to increased cognitive demand accompanying stress tasks and extended beyond neural pathways associated with negative emotions. Our results provide neuroimaging evidence that psychological stress induces negative emotion and vigilance and that the ventral RPFC plays a key role in the central stress response.

Reply
pragnyasmita
Active In SP
**

Posts: 1
Joined: Jan 2011
#3
28-01-2011, 08:05 AM

i want the detail information about this topic..........
pragnyasmita samal
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  level 1 dfd for blood bank management system Guest 1 57 29-10-2016, 02:41 PM
Last Post: amrutha735
  matlab codes for local directional pattern Guest 1 110 29-10-2016, 10:59 AM
Last Post: ijasti
  online voting system data flow diagram level0 level1 level2 free download Guest 1 76 11-10-2016, 02:44 PM
Last Post: amrutha735
  nanobots artificial blood wikipedia Guest 1 221 08-10-2016, 04:31 PM
Last Post: Dhanabhagya
  ecg pattern recognition matlab Guest 1 150 08-10-2016, 04:23 PM
Last Post: amrutha735
  level 1 dfd for blood bank management system Guest 1 61 08-10-2016, 03:57 PM
Last Post: Dhanabhagya
  detection of malarial parasite in blood using image processing source code Guest 1 77 08-10-2016, 03:51 PM
Last Post: Dhanabhagya
  a sample data flow diagram for an online recruitment system Guest 1 63 08-10-2016, 03:30 PM
Last Post: amrutha735
  gauss seidel method algorithm and flow chart pdf Guest 1 80 08-10-2016, 02:34 PM
Last Post: Dhanabhagya
  java source code for dynamic signature verification using pattern recognition Guest 1 92 08-10-2016, 10:11 AM
Last Post: amrutha735