Helping Fathers Of Sexually Abused Children

The preliminary results of a Universite de Montreal study show that fathers of sexually abused children can suffer from anxiety, depression and grief. Such patriarchs are often overwhelmed by a desire for vengeance, yet little literature exists to help them deal with their pain. Marie-Alexia Allard plans to change that.

“Many fathers of sexually abused children want revenge and express the desire to torture their child’s aggressor,” says Allard, a PhD student at the Université de Montréal Department of Psychology. “Supporting the mother is essential to the recovery of the child. And the focus is often put on the mother because the father is the aggressor. But what happens in cases where the father is not the aggressor?”

Preliminary data provides some insight on the extent of the trauma experienced by fathers. “Their situation is particularly difficult,” says Allard. “The most violent reactions arise when the aggressor is the stepfather of the child, the mother’s new boyfriend or her new husband.”

Cases in which vengeance is not the dominant emotion are ones where the aggressor is a family member with whom the father has an emotional bond. This was the situation in more than 50 percent of cases. Read more

Brain’s Fear Center Is Equipped With A Built-In Suffocation Sensor

The portion of our brains that is responsible for registering fear and even panic has a built-in chemical sensor that is triggered by a primordial terror – suffocation. A report in the November 25th issue of the journal Cell, a Cell Press publication, shows in studies of mice that the rise in acid levels in the brain upon breathing carbon dioxide triggers acid-sensing channels that evoke fear behavior.

In addition to the insight into the normal fear response, the discovery may help to explain and perhaps even correct what goes wrong in those who suffer from panic attacks, the researchers say. (It’s been known for almost a century that carbon dioxide inhalation can trigger panic attacks, and that patients with panic disorder are particularly susceptible.)

“The amygdala has been thought of as part of the fear circuitry of the brain,” said John Wemmie of the University of Iowa, Iowa City. “Now we see it isn’t just part of a circuit, it is also a sensor.”

“It’s interesting that evolution positioned an acid sensor right in this central circuit,” added Michael Welsh, also of the University of Iowa. “Detecting an elevated carbon dioxide is critical for survival. When you are suffocating, this circuit triggers mechanisms for escape or relief of the problem.”

The circuit in question resides in the amygdala, a structure that stimulates the sympathetic nervous system for fight-or-flight and links to other brain regions involved in the response to threat. The amygdala is known from earlier studies to play a role in both innate and learned fears.

In previous studies, Wemmie’s and Welsh’s team discovered that the acid-sensing ion channel-1a (ASIC1a) is particularly abundant in the amygdala and other fear circuit structures, where it is required for normal responses in tests of fear behavior. As the name suggests, ASICs are sensitive to pH and become activated when pH levels fall. Read more