Questions tagged [physiology]

For questions about the interaction of the brain/mind with function and structure of the rest of the body. If your question is specifically about the physiology of the central (or peripheral) nervous system then use the tag neurobiology.

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13
votes
1answer
4k views

Are there recent theories on physiognomy?

What are recent theories on the relation between personality and facial or body shape, and are there studies to support them? See Wikipedia on physiognomy and somatotypes & constitutional ...
8
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2answers
7k views

Is Maslow's hierarchy of needs really accurate at labeling sex as a physiological “need”?

Is Maslow's hierarchy of needs really accurate at labeling sex as a physiological "need"? If so, would that mean that single/celibate people cannot live self-actualized lives unless they have some ...
7
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2answers
988 views

The effect of proper food intake on emotions and brain function

Recently I wasn't eating at the proper time and I often skipped meals. I was angry, stressed before taking my meal, and suddenly, I felt good after having my dinner. I have felt the same way many ...
5
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1answer
2k views

Does looking into a mirror relieve eye strain in a similar way to looking at distant objects?

Sometimes when having an eye exam the eye chart is viewed through a mirror to increase the distance between the person and the chart. When using consoles, it is recommended to look away from the ...
18
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3answers
671 views

Why does being in a natural environment induce some kind of “peace” state while mecha/tech ones induce the opposite?

Usually, natural environments (being out in "nature") tend to induce a happy and peaceful state, while mechanical and technological ones tend to induce stress and sadness. Why does this happen? Are ...
10
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1answer
1k views

What is the effect of imagining doing an exercise on muscle growth?

I recently read a study by Yue, G et al. (1992) which I found incredibly interesting. I have no background in physiology and I was hoping that someone who does can clear things up. If I understood it ...
10
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3answers
3k views

Is there a correlation between facial features and personality?

Background: From block buster movies, to Snow White and the Seven Dwarf's, characters with certain personality and mental traits are portrayed looking a certain way. For example, the clumsy one has ...
10
votes
1answer
1k views

How are people able to wake themselves up after a pre-specified amount of time?

Auto-suggestion seems to work. Several people I know seem to be able to tell themselves "I'll wake up after 'N' hours/minutes", and do so within a minute or two of that duration. I thought for a ...
6
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1answer
1k views

What is the difference between drug withdrawal and sleep deprivation effects?

Personal sleep-deprivation study: Recently, I posed a question that I'm sure many people find tough already: "Do I really need to sleep?", and so I tested myself, I spent two days without sleeping. ...
8
votes
1answer
777 views

How does fever affect time perception?

Many of my friends and I have noticed that at certain stages of fever, time is often perceived as being longer than usual. I'd like to know if this is caused by the disease itself, an immune reaction, ...
8
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1answer
2k views

How does body temperature affect perception of time?

Does raising or lowering one's body temperature lead to different perceptions of time? And does this then control the virtual length of positive or negative emotions? For example, individuals might ...
4
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2answers
149 views

Does pain reduce cognitive abilities?

Does subjecting a person to pain reduce his cognitive abilities? If so, what is the process that reduces the ability? (By process, I mean the changes happening in the nervous system as a result of ...
4
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1answer
522 views

Which personality traits are proved to correlate with any facial features?

I pretty certain I have read somewhere about certain personality traits that correlate with certain facial features, but I can't remember just what or where I read. I think the personality traits may ...
3
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1answer
86 views

Can signals from the prefrontal cortex alone trigger a readiness potential in the pre-supplementary motor area?

Background In Haggard, Patrick. "Human volition: towards a neuroscience of will." Nature Reviews Neuroscience 9.12 (2008): 934., the author states in the caption of Figure 1 (pg. 4): The ...
3
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1answer
184 views

Physiologically speaking is anxiety and adrenaline the same?

I am wondering from a physiological perspective what is anxiety. From my experience anxiety feels like muscle tension and lots of suppressed energy. For what I know the only thing that can make the ...