development Flashcards
Define brain
The organ in your head made up of nerves that process information & control behavior.
Define forebrain
The anterior part of the brain.
It includes the hemispheres & the central brain structures.
Define midbrain
The middle section of the brain
forming part of the central nervous system.
Define hindbrain
The lower part of the brain
that includes the pons, medulla oblongata, & cerebellum.
Define anterior
Directed towards the front, when used in relation to our biology.
Define posterior
Directed towards the back, when used in relation to our biology.
Define cerebellum
An area of the brain
near to the brainstem
that controls motor movements (muscle activity.)
Define medulla oblongata
Connects the upper brain to the spinal cord & controls automatic responses.
Define involuntary response
A response to a stimulus that occurs without someone making a conscious choice. They’re automatic, such as reflexes.
Define neural connections
Links formed by messages passing from one nerve cell (neuron) to another.
Foetus 3-4 weeks old
Development
Long tube develops in the brain.
Divided from the front into 3 distinct round sections called:
Forebrain, midbrain, hindbrain.
Below the hindbrain = spinal cord.
Foetus 5 weeks old
Foetus 5 weeks old
development
Forebrain & hindbrain split into further 2 cavities (5 in total.)
Forebrain splits into an anterior & posterior section.
Hindbrain splits through the middle.
Midbrain doesn’t divide.
Foetus 6 weeks
development
cerebellum can be seen
foetus 20 week
development
medulla oblongata formed (in the hindbrain, in front of the cerebellum)
-connects rest of the brain to the spinal cord
- controls involuntary responses
year after birth
Cerebellum is 3 times the size.
Brain doubles in size.
Controls physical skills which develop a lot over this time; accounting for the growth of the cerebellum.
Cerebellum; balance & coordination.
manages motor commands sent to/from the nervous system – E.G, balance & the acquisition of motor skills such as crawling, walking, running, and hopping.
3 years old
Brain 80% of its size.
Birth to 3yo = increase in neural connections. 700-1000 every sec.
state features in sensorimotor stage
- Birth to 2 years
- Infants use senses & movements to get information about their world
Learn by linking what they see, hear, touch, taste or smell to objects they’re using e.g grasping/sucking objects.
Begin with reflex actions, then learn to control movements.
6 months old - object permanence (knowing something exists even if it’s out of sight.)
4 months old - repeat actions.
End of stage - has sense of self as existing separately from the world around them.
state features in pre-operational stage?
what are the two sub-stages?
Pre-operational stage
(2 to 7 years)
The symbolic function stage (2 to 4 years)
Start imitating others.
Start of language development.
Symbolic play: using 1 object to represent other objects.
Egocentrism: can only see the world through their eyes.
Animism: believe objects can behave like they’re alive.
Intuitive thought stage (4 to 7 years)
Start of reasoning; ask a lot of questions.
Centration: focusing on 1 aspect of situation & ignoring other factors.
Irreversibility: believing actions can’t be reversed.
Conservation not yet achieved.
(changing how something looks doesn’t change its volume, size, or weight.)