http://www.functionalneurogenesis.com/blog/2011/10/data-stress-can-increase-or-decrease-anxiety-depending-on-the-timing-of-the-stressor/?utm_source=rss&utm_medium=rss&utm_campaign=data-stress-can-increase-or-decrease-anxiety-depending-on-the-timing-of-the-stressor New neurons in the adult brain. How they work and what they're good for. Wed, 09 May 2012 20:44:23 -0600 http://wordpress.org/?v=2.8.5 hourly 1 http://www.functionalneurogenesis.com/blog/2011/10/data-stress-can-increase-or-decrease-anxiety-depending-on-the-timing-of-the-stressor/comment-page-1/#comment-5409 Jason Snyder Sun, 06 Nov 2011 03:58:48 +0000 http://www.functionalneurogenesis.com/blog/?p=1305#comment-5409 This is a great point Heather. I didn't discuss the data but indeed wanted to share it because I think there's a broad assumption that stress is always "bad", and more likely to lead to anxious or depressed behaviors. Thinking about stress in the context of survival, your point certainly makes sense. What you're describing fits with work by the Blanchards and Gray & Mcnaughton, suggesting that as the perceived distance of the threat changes, so does behavior. At early timepoints after stress it may be most advantageous for animals to be "anxious", i.e. avoid threatening situations. But soon after, when it's clear there's a degree of safety, maybe behavior changes so as to take advantage of opportunity for escape, eating etc. This is a great point Heather. I didn’t discuss the data but indeed wanted to share it because I think there’s a broad assumption that stress is always “bad”, and more likely to lead to anxious or depressed behaviors. Thinking about stress in the context of survival, your point certainly makes sense. What you’re describing fits with work by the Blanchards and Gray & Mcnaughton, suggesting that as the perceived distance of the threat changes, so does behavior. At early timepoints after stress it may be most advantageous for animals to be “anxious”, i.e. avoid threatening situations. But soon after, when it’s clear there’s a degree of safety, maybe behavior changes so as to take advantage of opportunity for escape, eating etc.

]]> http://www.functionalneurogenesis.com/blog/2011/10/data-stress-can-increase-or-decrease-anxiety-depending-on-the-timing-of-the-stressor/comment-page-1/#comment-5405 Heather Sat, 05 Nov 2011 21:31:46 +0000 http://www.functionalneurogenesis.com/blog/?p=1305#comment-5405 Is it that stress can decrease anxiety or increase the fight/flight response? Stress may make an animal more likely to take risks (i.e. spend more time on open arms) in order to ensure its survival under adverse circumstances. Stress may also cause the latency to feeding time to drop relative to controls since it's looking to consume as many resources as it can a) because its expending a lot of energy due to the mobilization of resources via the sympathetic nervous system in response to the stressor and b) because it is looking to stock up in the case that further danger lies ahead. Is it that stress can decrease anxiety or increase the fight/flight response? Stress may make an animal more likely to take risks (i.e. spend more time on open arms) in order to ensure its survival under adverse circumstances. Stress may also cause the latency to feeding time to drop relative to controls since it’s looking to consume as many resources as it can a) because its expending a lot of energy due to the mobilization of resources via the sympathetic nervous system in response to the stressor and b) because it is looking to stock up in the case that further danger lies ahead.

]]> http://www.functionalneurogenesis.com/blog/2011/10/data-stress-can-increase-or-decrease-anxiety-depending-on-the-timing-of-the-stressor/comment-page-1/#comment-5185 Jason Snyder Tue, 18 Oct 2011 04:25:15 +0000 http://www.functionalneurogenesis.com/blog/?p=1305#comment-5185 Good question. I haven't scoured the literature but my feeling is that these things haven't been systematically examined the way they should, or the way you'd think they'd be. Good question. I haven’t scoured the literature but my feeling is that these things haven’t been systematically examined the way they should, or the way you’d think they’d be.

]]> http://www.functionalneurogenesis.com/blog/2011/10/data-stress-can-increase-or-decrease-anxiety-depending-on-the-timing-of-the-stressor/comment-page-1/#comment-5163 NatC Sun, 16 Oct 2011 23:27:26 +0000 http://www.functionalneurogenesis.com/blog/?p=1305#comment-5163 Is there any data on vigilance vs arousal at these time points after stress? Is there any data on vigilance vs arousal at these time points after stress?

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