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connecting tract -Is a commissure: connects 2 lobes -subcortical structures are the Limbic Systemand 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
touch and taste --Consists of the Hypothalamus: involved in Feeding, Fleeing, Fighting and Mating 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