Changes

*The tract consists of '''several''' [[Nervous System - PNS - Anatomy & Physiology#Nerve Fibre|short neurones]].

*The tract consists of '''several''' [[Nervous System - PNS - Anatomy & Physiology#Nerve Fibre|short neurones]].

*Therfore the ascending reticular formation is ''bilateral'' and ''multineuronal''.

*Therfore the ascending reticular formation is ''bilateral'' and ''multineuronal''.

*This pain pathway is more primitive than the [[Nervous System - Sensory Pathways - Anatomy & Physiology#Spinothalamic Tract|spinothalmic tract]].

*This pain pathway is more primitive than the [[Sensory Pathways - Anatomy & Physiology#Spinothalamic Tract|spinothalmic tract]].

**In '''man''', the ascending reticular formation is superceeded by the [[Nervous System - Sensory Pathways - Anatomy & Physiology#Spinothalamic Tract|spinothalamic tract]]. In '''animals''', the ascending reticular formation is the '''main pathway''' for pain to reach the [[Forebrain - Anatomy & Physiology#Cerebral Cortex|cerebral cortex]].

**In '''man''', the ascending reticular formation is superceeded by the [[Sensory Pathways - Anatomy & Physiology#Spinothalamic Tract|spinothalamic tract]]. In '''animals''', the ascending reticular formation is the '''main pathway''' for pain to reach the [[Forebrain - Anatomy & Physiology#Cerebral Cortex|cerebral cortex]].

==Pain==

==Pain==

*"Painful stimuli" can range from itches, to nausea, to being in agony.

*"Painful stimuli" can range from itches, to nausea, to being in agony.

*Painful stimuli may be transmitted to the brain by one of two pathways:

*Painful stimuli may be transmitted to the brain by one of two pathways:

::[[Nervous System - Sensory Pathways - Anatomy & Physiology#Spinothalamic Tract|Spinothalamic Tract]]

::[[Sensory Pathways - Anatomy & Physiology#Spinothalamic Tract|Spinothalamic Tract]]

::[[Nervous System - Sensory Pathways - Anatomy & Physiology#Ascending Reticular Formation|Ascending Reticular Formation]]

::[[Sensory Pathways - Anatomy & Physiology#Ascending Reticular Formation|Ascending Reticular Formation]]

'''Spinothalamic Tract'''

'''Spinothalamic Tract'''