consciousness Flashcards
consciousness definition
the subjective experience of the mind and the world around us
what are the elements of conciousness
levels (alertness) vs. contents (subjective experience)
what system maintains conciousness
Reticular activating system…
the degree of
activity in the reticular system is associated with
alertness/levels of consciousness.
RF the modulates cerebral activity via various projections which are…
RF projects to the hypothalamus, thalamus and the cortex
• Ventral tegmental area (dopaminergic neurones)
(midbrain)
• Locus coeruleus (noradrenergic neurones) (pons)
is there a singe brain function for conicousness
NO
Quantifying brain
complexity using ….
transcranial magnetic stimulation and EEG – pertubational complexity index (PCI)
what is Neural correlates of consciousnes
The minimum neuronal mechanisms jointly sufficient for any one
specific conscious experience
name some Disorders of consciousness
Coma
Vegetative state
Minimally conscious state
define coma
state of unconsciousness in which the subject
cannot be roused by even strong sensory stimuli.
(absent wakefulness and awareness)
define vegetative state
irreversible coma due to disconnection of cortex from brainstem or
widespread cortical damage