My brother , age 63, had a stroke on Christmas Eve, We found him the next day, The doctors said he had a previous stroke that has now bleed out. Post 4 weeks he sometimes seems nearly normal but then becomes disagreeable and cannot fully think thru things and we are finding that he has lost some memory. Is there hope that this will disapate over time or is the healing process over? It was a left frontal lobe x two . There is no paralysis.Thank you.