Cerebral Cortex- part I Flashcards
Cerebral Cortex
gray matter on top. fold, 6 layers, no fiber tracts. Conscious mind
primary sensory areas, sensory association, multimodal motor
Primary Sensory Areas- somatosensory
postcentral gyrus
general somatic senses are perceived from skin and muscles/tendons. Touch, pressure, vibration, pain temperature
Somatotopy
each region of the cortex receives sensory stimulus from a specific area of the body
sensory homunculus
a body map of the sensory cortex in the postcentral gyrus. amount devoted to a body part is equivalent to its sensitivity. isolateral (upside down)
Primary Sensory Areas- vestibular cortex
processes info from vestibular apparatus.
balance
located in posterior part of the insula lobe
Primary Sensory Areas- Gustatory Cortex
taste. Roof of lateral sulcus
Primary Sensory Areas- olfactory cortex
smell. medial aspect of cerebrum in piriform lobe. Has uncus
Primary Sensory Areas- Rhinecephalon
“nose brain” all parts of the brain that get olfactory signals- piriform lobe, olfactory tracts & olfactory bulbs.
connects to limbic system
Primary Sensory Areas- Visceral Sensory Areas
deep in lateral sulcus on insula lobe. Pain, pressure, hunger from abdomine and thoracic organs
Primary Sensory Areas- Primary visual cortex
deep in calcarnine sulcus in occipital lobe. Largest sensory area. Contralateral
Primary Sensory Areas- Primary auditory
loudness, rhythm and pitch. Superior edge of temporal lobe.
Sensory Association Areas- Somatosensory Association
posterior to primary somatosensory cortex. Integrates various sensory inputs and draws on memories.
Sensory Association Areas- visual association
surround primary visual. Most of the occipital love, analyzes color, form, movement. Proceeds into 2 streams:
- ventral stream
- dorsal stream
Sensory Association Areas- visual association- dorsal stream
where. spatial relationships. parietal cortex
Sensory Association Areas- visual association- ventral stream
what. temporal lobe. recognizing objects, words, faces
