Neuroscience of Learning and Memory Flashcards
Central Nervous System (CNS)
Brain and spinal cord
Peripheral Nervous System (PNS)
- Somatic: controls voluntary motor movement and relays sensory information
- Autonomic: sympathetic (‘fight or flight’) and parasympathetic (‘rest and digest’)
Enteric Nervous System
- second brain
- Controls the gastrointestinal system
- Sometimes called a ‘second brain’
Posterior vs. anterior
Medial vs. lateral
Cortical Lobes
- Frontal- Executive functions, controlling complex actions (decision making)
- Parietal- Touch, feeling, sense of space
- Occipital- vision
- Temporal- hearing and memory
Subcortical Structures
Basal Ganglia
Thalamus
Amygdala
Hippocampus
Basal Ganglia
variety of different structures that are involved in movement/ modulating motor movements and actions and involved in the reward system. Caudate nucleus, putamen, nucleus accumbens, etc. Modulating movement.
Thalamus
sensory information gets passed through the thalamus a part from smell to other parts of the brain. Transmits sensory info to sensory cortices.
Amygdala
emotion processing (fear especially)
Hippocampus
Memory consolidation
Reflexes
simplest expression of the 3 nervous system functions:
1. Stimulus
2. little processing
3. response
Reflexes are hardwired, innate, and
involuntary
Processing is often handled solely in the
spinal cord
Interneurons allow for rapid responses that
can bypass the brain
Sensory Pathways
Common pathway for each sense:
Sensory organs -> thalamus -> primary sensory cortex e.g. eyes -> thalamus -> V1 occipital
Motor Pathways
All voluntary motor output is sent down to the spine via M1, primary motor cortex, in the frontal lobe
Comparative Neuroanatomy
Lesion Analysis
Magnetic Resonance Imaging (MRI)
Electroencephalogram (EEG)
Magnetoencephalogram (MEG)
Excitatory neurons
Neurotransmitter: glutamate
primary excitotary, continue signals and increase the chance other neurons will fire
Inhibitory neurons
Neurotransmitter: 𝛾-aminobutyric acid (GABA)
act on other neurons, inhibiting electrical signalling (inhibitory neurons)
Glial Cells
Provide support to nerve cells
help signals transfer faster
Dendritic branches
Dendrite