What is the parahippocampal gyrus responsible for?
The parahippocampal gyrus is a cortical region in the medial temporal lobe that surrounds the hippocampus and plays an important role in both spatial memory (Squire, L. R. and Zola-Morgan, S., 1991) and navigation (Aguirre, G. K. et al., 1996; Maguire, E. A. et al., 1996).
What is the parahippocampal place area?
The parahippocampal place area (PPA) is a subregion in posterior parahippocampal and anterior lingual cortex that responds preferentially to indoor/outdoor scenes and also to houses/buildings, but not to faces or objects (Epstein, R. and Kanwisher, N., 1998; Aguirre, G. K. et al., 1998).
Is amygdala part of parahippocampal gyrus?
5.3. 1(iii) Limbic system. The limbic lobe, containing the cingulate and parahippocampal gyri with entorhinal cortex (Figure 5), and the amygdala, hippocampus, and septal area (Figure 7) comprise the limbic system.
What is the perirhinal cortex?
The perirhinal cortex is a proisocortical area in the medial temporal lobe interconnecting the hippocampal formation together with other parts of the limbic lobe and with the lateral temporal and occipitotemporal association cortices.
What is the function of cingulate gyrus?
The cingulate gyrus is an arch-shaped convolution situated just above the corpus callosum. The frontal portion is termed the anterior cingulate gyrus (or cortex). A component of the limbic system, it is involved in processing emotions and behavior regulation. It also helps to regulate autonomic motor function.
Is the parahippocampal gyrus involved in memory?
The parahippocampal cortex and hippocampus are brain structures known to be involved in memory. Consistent with the findings of the lesion study, the fMRI results showed significant activity in the RPH in the memory for the spatial configuration condition, but not memory for object identity.
What is Subcallosal gyrus?
The subcallosal cingulate gyrus (SCG), including Brodmann area 25 and parts of 24 and 32, is the portion of the cingulum that lies ventral to the corpus callosum. It constitutes an important node in a network that includes cortical structures, the limbic system, thalamus, hypothalamus, and brainstem nuclei.
Where is parahippocampal gyrus located?
mesial temporal lobe
The parahippocampal gyrus is a cortical ridge in mesial temporal lobe, located superior to the tentorium. It covers the hippocampus and uncus medially, and amygdala anteromedially. Inferolaterally it is bounded by the collateral sulcus.
Is the amygdala part of the Papez circuit?
The circuit connects the hypothalamus and the cortex and acts as the emotional system of the brain. Now, the Amygdala is thought to play a key role in emotion, a structure that was not a part of the Papez circuit until 1952 when MacLean included it in the modified version of the circuit, the limbic system.
Is the hypothalamus part of the limbic system?
The limbic system is a collection of structures involved in processing emotion and memory, including the hippocampus, the amygdala, and the hypothalamus.
What is the Perforant pathway?
The perforant pathway is a large neuronal projection that arises from layers II and III of the entorhinal cortex of the parahippocampal gyrus. These profound alterations effectively disconnect the hippocampal formation from the association and limbic cortices.
