Nervous System Flashcards
which nervous system is split into somatic and visceral (autonomic)
PNS
intensity of stimulus depends on how many ___ the brain receives
action potentials
what is proprioception
body position, knowing where your limbs are in relation to torso
where is the mental map of the sensory input locations
somatosensory cortex
what causes a body part to have a bigger representation on the map
more receptive fields, more nuerons
what is the homunculus
3D representation of the somatotropin map
fast adapting receptors
only detect changes and stop sending if stimulus non threatening
slow adapting receptors
don’t stop sending signals if stimulus is threatening e.g. pain (even if just scratchy tag)
left side of brain is more to do with
logic, language, maths etc
right side of brain is more to do with
creativity, intuition, art etc
brainstem is involved in
basic function to keep you alive, communicates with spinal cord
thalamus is involved in
processing sensory information and sends it to primary somatosensory cortex
cerebellum is involved in
coordination and balance, where the body is positioned, motor planning and prep, not aware of info that comes into here
hypothalamus is involved in
control centre, regulates hormones and homeostasis
primary sensory cortex
somatic sensory action potentials come here, aware of these sensations, somatotopic map based on numbers of receptors in body parts
primary motor cortex
action potentials start here and go along motor neurons to produce a voluntary response, somatotopic map
are somatotopic maps for primary sensory and motor cortexs the same
no
how do chemical factors increase neuroplasticity and what benefits does this bring
increase amount of neurotransmitter released, increases short term memory and short term improvement in performance of motor skill
how do connection factors increase neuroplasticity and what benefits does this bring
increase number of connections between neurons, increases long term memory and long term improvement of motor skill
how do excitability factors increase neuroplasticity and what benefits does this bring
Brain areas become more excitable (easier to bring to threshold) the more you use them
what behavioural factors increase neuroplasticity
practice, difficulty (the harder it is the more your brain changes), use it or lose it
name the seven ways to increase brain health
exercise, social connections, sleep, learn new things, healthy diet, reduce alcohol and drugs, positive outlook
what areas of the brain are involved in movement planning and initiation
frontal lobe, basal nuclei, cerebellum, final initiation from the primary motor cortex
what is the pathway for a motor response from brain to skeletal muscle
primary motor cortex, upper motor neurons, spinal cord, lower motor neurons, skeletal muscle
