Can spiders hallucinate?

  • #1
Ivan Seeking
Staff Emeritus
Science Advisor
Gold Member
7,814
855
Referring to the thread in ps that links to pictures of webs made by drugged spiders:

Spiders on lsd discussion

But I thought the joke was interesting. Can spiders or other insects hallucinate? Do we have any idea? Funny thought.
 

Answers and Replies

  • #2
damgo
Probably not, their visual cortices are way too underdeveloped. Their visual representation of the world -- define it as you will -- is probably incredibly simplistic.
 
  • #3
RuroumiKenshin
damgo: hallucinations are results of an abnormal level of neurotransmitters. If insect brains could achieve a point where the neurotransmitters are at an abnormal level, then yes insects can hallucinate.
 
  • #4
42
0
Well as far as I'm concerned an hallucination involves (but is not limited to) the distortion of the cognitive maps that form a representation of reality built from core consciousness and the various perceptual functions. Given that spiders don't possess core consciousness or cognitive maps I would have to say that spiders cannot hallucinate.

If on the other hand you want to say that what constitutes hallucination in spiders is them getting f*cked up on drugs and their web weaving ability goes down the crapper then OK.
 
  • #5
128
0
I must have a very different idea of what constitutes an hallucination. To me most hallucinations seem to be simply a case of incorrect data analysis, where the brain recieves corrupted signals, or perhaps uncorrupted signals but analyses them wrong. Most hallucinations are probably as simple as seeing flashes of colour that aren't actually there, or sensing vibrations that didn't actually occur say.

If the above is correct then I believe spiders could very well experience hallucinations. Sure they are nothing compared to the kind of hallucinations humans experience when on drugs such as LSD, but the could affect the spiders web making abilities.
 

Related Threads on Can spiders hallucinate?

  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
8
Views
20K
  • Last Post
Replies
4
Views
650
  • Last Post
Replies
9
Views
2K
Replies
4
Views
2K
Replies
7
Views
3K
Replies
13
Views
7K
Replies
3
Views
3K
Replies
12
Views
25K
Replies
17
Views
14K
Top