skip navigation

Not in the United States?
change your preferences.

Brain Scans

Figure 3.1. Heuristic representation of the three frontal regions most consistently implicated in episodic memory encoding. Two separate left frontal regions including dorsal (posterior) and ventral (anterior) regions are plotted (top lateral view of brain). The third region is located in the right dorsal (posterior) frontal cortex (bottom lateral view of brain). Importantly, these regions dissociate functionally across encoding paradigms. One dissociation is shown by plotting the response over an encoding block for each region, separately for word- and face-encoding conditions. Each time course (in seconds) shows the evolving fMRI signal over a 40s encoding epoch followed by a 24s control period (encoding epoch ends and control period begins at the vertical line in each plot). Data were averaged over 272 separate encoding epochs. FACE and WORD time course data are plotted separately. Three important points are worth noting: (1) there is increased involvement for WORD encoding in the left frontal regions and for FACE encoding in the right frontal regions; (2) within the left frontal regions, the ventral (anterior) region is most selective for WORD encoding; and (3) for those regions showing little or no sustained responses (e.g. the WORD-encoding condition in the right frontal region), there is still none the less a transient increase at the beginning and end of the epoch, perhaps reflecting an initial recruitment of the region. © Psychology Press 2002.

From:

The Cognitive Neuroscience of Memory

Encoding and Retrieval

• Edited by Amanda Parker, Timothy J. Bussey, Edward L. Wilding

Recent advances in techniques available to memory researchers have led to a rapid expansion in the field of cognitive neuroscience of memory....

Published November 28th 2002 by Psychology Press.

more information about The Cognitive Neuroscience of Memory

 

Back to index of Brain Scans