What is grey matter composed of?
neuronal cell bodies and dendrites
What is white matter composed of?
myelinated axons
How many cell layers in the neocortex ?
6
Gyri and sulci benefits
increases surface area without increaing head size
Frontal lobe
executive control:voluntary motor control
Parietal lobe
somatosensory perception
Temporal
auditory, language, long-term memory
Occipital
vision
Central suculus
separates the frontal and parietal lobes
Lateral sulcus/fissure
separates the temporal lobe from the frontal and parietal lobes
Longitudinal fissure
A deep midline groove separates the two hemispheres.
Function of Broca’s area
Language production
found in left hemisphere.
damage causes Broca’s aphasia -impaired speech production)
4 major areas of the parietal lobe
Precuneus- imagination
Somatosensory cortex-touch information
Superior parietal lobule - object identification
Inferior parietal lobule- mathematical reasoning
What might cause hemispatial neglect in a patient?
Stroke, Traumatic brain injury and tumour
Superior temporal sulcus
separating the superior and middle temporal gyri
Wernicke’s area
found in left hemisphere
language comprehension
damage-> Wernicke’s aphasia -> impaired understanding of spoken language
What does gangli refer to?
refers to clusters of cells in the PNS
Together, the putamen and caudate are referred to as?
Striatum
Which basal ganglia nucleus is located in midbrain, and what disease is associated with degeneration of this nucleus?
Substantia nigra
Parkinson’s disease.
