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Single Idea 4932

[filed under theme 15. Nature of Minds / A. Nature of Mind / 8. Brain ]

Full Idea

The 'specious present' (William James), a rough estimate of the duration of a single conscious state, is of the order of 100 milliseconds, meaning that conscious states can change very rapidly.

Clarification

'Specious' means it is not real

Gist of Idea

A conscious state endures for about 100 milliseconds, known as the 'specious present'

Source

G Edelman / G Tononi (Consciousness: matter becomes imagination [2000], Ch.12)

Book Ref

Edelman,G/Tononi,G: 'Consciousness: how matter becomes imagination' [Penguin 2000], p.152


A Reaction

A vital feature of our subjective experience of time. I wonder what the figure is for a fly? It suggests that conscious experience really is like a movie film, composed of tiny independent 'frames' of very short duration.


The 15 ideas with the same theme [philosophically interesting features of the brain]:

The directive centre is located in the whole head [Democritus, by Ps-Plutarch]
Do we think and experience with blood, air or fire, or could it be our brain? [Plato]
The brain has no responsibility for sensations, which occur in the heart [Aristotle]
Stopping the heart doesn't terminate activity; pressing the brain does that [Galen, by Cobb]
Nerves and movement originate in the brain, where imagination moves them [Descartes]
Researching phenomenal consciousness is peculiar, because the concepts involved are peculiar [Papineau]
A 1988 estimate gave the brain 3 x 10-to-the-14 synaptic junctions [Lockwood]
Pain doesn't have one brain location, but is linked to attention and emotion [Carter,R]
Proper brains appear at seven weeks, and neonates have as many neurons as adults do [Carter,R]
In primates, brain size correlates closely with size of social group [Carter,R]
A conscious state endures for about 100 milliseconds, known as the 'specious present' [Edelman/Tononi]
The brain is not passive, and merely processing inputs; it is active, and intervenes in the world [Cobb]
There is a single mouse neuron which has 862 inputs and 626 outputs [Cobb]
Single neurons can carry out complex functions [Seth]
The cerbellum has a huge number of neurons, but little involvement in consciousness [Seth]