connecting tract Is a commissure connects 2 lobes subcortical structures are

Connecting tract is a commissure connects 2 lobes

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connecting tract - Is a commissure: connects 2 lobes - subcortical structures are the Limbic System and the Basal Ganglia Major structures of the Limbic System Hippocampus: Involved in forming and retrieving memories Amygdala: organizes emotional responses; especially those linked to aggression and fear Nucleus Accumbens: involved in reward and pleasure Cingulate - function to know, not as important (optional) Fornix- function to know, not as important (optional) Septum- function to know, not as important (optional) Mammillary bodies- function to know, not as important (optional) - Basal Ganglia: involved in voluntary muscle movement - Consists of the putamen , caudate , globus pallidus - Diencephalon - Consists of the Thalamus : receives sensory information and sends them to appropriate areas of the cerebral cortex. It’s like a switchboard. - Damage to this area may result in auditory info going into visual info, someone with damage to this area would behave similar to someone with schizophrenia - Consists of the Lateral Geniculate Nucleus - in charge of visual info - Consists of Medial Geniculate Nucleus - in charge of auditory info - Consists of Ventral Posterior Nucleus - in charge of sensations from
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touch and taste - - Consists of the Hypothalamus : involved in F eeding, F leeing, F ighting and M ating Behaviour - Cause the release of hormones from the Pituitary Gland (dangles beneath hypothalamus) - Midbrain is the: - Mesencephalon - Tectum: means roof - Consists of superior colliculus: allows us to react to visual stimuli - Consists of inferior colliculus: allows us to react to auditory stimuli - Reflexes and reaction to moving stimuli - Tegmentum: means floor, consists of 3 structures - Periaqueductal gray → links to analgesia (relief of pain) - Substantia Nigra → area of brain which starts to degenerate during Parkinson’s disease - Red Nucleus → work with sensory and motor functions - Hindbrain is the: - Metencephalon - Pons- “bridge” - Ventral surface - Main connection between cortex and cerebellum - Role in sleep, dreaming, eye movements, vestibular sense - Cerebellum- “little brain” - Muscle coordination (walking, speech) in highly trained motor skills - Involved in learning and memory - Damage? Alcohol disrupts movement control functions - Myelencephalon - Medulla - - (this is where we find the medulla: it houses the neurons which are responsible for breathing and heart rate - Damage to the medulla can result in death - Reticular formation - “Gatekeeper”, can admit or block sensory information - Damage to the reticular formation can result in loss of consciousness or coma
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