Temporal Lobe

The temporal lobe is a region of the cerebral cortex that is located beneath the Sylvian fissure on both cerebral hemispheres of the mammalian brain.

The temporal lobe is involved in auditory perception and is home to the primary auditory cortex. It is also important for the processing of semantics in both speech and vision. The temporal lobe contains the hippocampus and plays a key role in the formation of long-term memory.

The superior temporal gyrus includes an area (within the Sylvian fissure) where auditory signals from the cochlea (relayed via several subcortical nuclei) first reach the cerebral cortex. This part of the cortex (primary auditory cortex) is involved in hearing. Adjacent areas in the superior, posterior and lateral parts of the temporal lobes are involved in high-level auditory processing. In humans this includes speech, for which the left temporal lobe in particular seems to be specialized. Wernicke's area, which spans the region between temporal and parietal lobes, plays a key role (in tandem with Broca's area, which is in the frontal lobe). The functions of the left temporal lobe are not limited to low-level perception but extend to comprehension, naming, verbal memory and other language functions.

The underside (ventral) part of the temporal cortices appear to be involved in high-level visual processing of complex stimuli such as faces (fusiform gyrus) and scenes (parahippocampal gyrus). Anterior parts of this ventral stream for visual processing are involved in object perception and recognition.

The medial temporal lobes (near the Sagittal plane that divides left and right cerebral hemispheres) are thought to be involved in episodic/declarative memory. Deep inside the medial temporal lobes lie the hippocampi, which are essential for memory function – particularly the transference from short to long term memory and control of spatial memory and behavior. Damage to this area typically results in anterograde amnesia.

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Hallucinated - Cause - Focal Epilepsy
... For example, visual hallucinations during occipital lobe seizures are typically visions of brightly colored, geometric shapes that may move across the visual field, multiply, or form ... contralateral side of the seizure focus, typically the temporal field ... Temporal lobe seizures, on the other hand, can produce complex visual hallucinations of people, scenes, animals, and more as well as distortions of visual perception ...
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... and Area 14* - Insular cortex Area 15* - Anterior Temporal Lobe Area 17 - Primary visual cortex (V1) Area 18 - Secondary visual cortex (V2) Area 19 - Associative visual cortex (V3,V4,V5 ... rostral part of the superior and middle temporal gyri) Area 39 - Angular gyrus, considered by some to be part of Wernicke's area Area 40 - Supramarginal gyrus considered by some to be part of Wernicke's ...
Medial Temporal Lobe
... The medial temporal lobe consists of structures that are vital for explicit memory ... The link between the medial temporal lobe and memory was first hypothesized a century ago ... The structures contained within the medial temporal lobe include the hippocampal regions and the parahippocampal gyrus, which consists of the perirhinal, parahippocampal and ...
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Daniel Amen - Amen's Classification
... ADHD 1 - Classic ADD (ADHD) 2 - Inattentive ADD 3 - Over-Focused ADD 4 - Temporal Lobe ADD 5 - Limbic ADD 6 - "Ring of fire" ADD Obesity 1 -- Compulsive 2 – Impulsive 3 -- Impulsive compulsive 4 ...

Famous quotes containing the word temporal:

    Death is not an event in life: we do not live to experience death. If we take eternity to mean not infinite temporal duration but timelessness, then eternal life belongs to those who live in the present.
    Ludwig Wittgenstein (1889–1951)