Behavioural Neuroscience - The Brain Flashcards
The Brain
What we are learning
-major parts of the brain
-hemispheres
-brain damage and disorders
Phrenology
-idea that different regions of the brain is responsible for specific functions
-Franz Gall (1800s)
-Bumps on skull reveal mental abilities and traits, the bigger the region the more of that trait you have
-Skull readings
-Turned out to be wrong… but right idea that various brain regions have particular functions
Three main parts of the brain
Hindbrain (oldest, reptilian brain, and responsible for survival functions)
-Medulla
-Pons
-Cerebellum
Midbrain
Forebrain (Newest)
-Basel Ganglia, Amygdala, Hippocampus, Hypothalamus, Thalamus
Cerebral cortex
-frontal lobe, parietal lobe, Occipital lobe, Temporal lobe
Hindbrain and Midbrain
The brainstem (damage is lethal)
The Brainstem
-Where spinal cord meets the skull
-Autonomic functions, related to survival
-Medulla, Pons, Midbrain, Cerebellum
Medulla
Heart rate, blood pressure, reflexes (swallowing and coughing)
Pons
Breathing, relays sensory info from face and skull to rest of brain, pain signals
Midbrain
-Motor movements (movement of eye for example) and reflexes
-part of the brainstem
Cerebellum
-coordinates voluntary movement
-important for balance and coordination, fine motor control
-called the little brain
-can still be able to move if damaged
Forebrain: Subcortical (Limbic System)
Thalamus
Hypothalamus
Hippocampus
Amygdala
Basa Ganglia
Forebrain: Subcortical (Limbic System)
Thalamus
-Sensory switchboard - relaying sensory information to appropriate brain regions
-sleep, consciousness
Forebrain: Subcortical (Limbic System)
Hypothalamus
-directly below the thalamus
-responsible for body maintenance
-thirst, hunger, sex drives, temperature
Forebrain: Subcortical (Limbic System)
Hippocampus
-Consolidation of information from short-term to long-term memory
-Spatial memory
Forebrain: Subcortical (Limbic System)
Amygdala
-Emotions, emotional behaviour
-Fear responses
-Memory for emotional events
Forebrain: Subcortical (Limbic System)
Basal Ganglia?
What happens if damaged?
-Planning and carrying out movement
-damage leads to Parkinson’s